| WO1995033750A1 | 1995-12-14 | |||
| WO2004094420A1 | 2004-11-04 | |||
| WO2002072202A1 | 2002-09-19 | |||
| WO2007137227A1 | 2007-11-29 |
| US7067664B1 | 2006-06-27 | |||
| US6107301A | 2000-08-22 | |||
| US20080194589A1 | 2008-08-14 | |||
| US6060478A | 2000-05-09 | |||
| US20070281919A1 | 2007-12-06 |
BOGUSLAWA BUDZISZEWSKA ET AL: "Regulation of the Human Corticotropin-Releasing-Hormone Gene Promoter Activity by Antidepressant Drugs in Neuro-2A and AtT-20 Cells", NEUROPSYCHOPHARMACOLOGY, vol. 29, no. 4, 1 April 2004 (2004-04-01), pages 785-794, XP055077200, ISSN: 0893-133X, DOI: 10.1038/sj.npp.1300379
YUHPYNG L. CHEN ET AL: "Synthesis and SAR of 2-Aryloxy-4-alkoxy-pyridines as Potent Orally Active Corticotropin-Releasing Factor 1 Receptor Antagonists", JOURNAL OF MEDICINAL CHEMISTRY, vol. 51, no. 5, 1 March 2008 (2008-03-01), pages 1377-1384, XP055077125, ISSN: 0022-2623, DOI: 10.1021/jm070578k
| Claims 1. Corticotropin releasing hormone receptor type 1 (CRHR1) antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having corticotropin releasing hormone (CRH) overactivity. 2. CRHR1 antagonist for use according to claim 1, wherein the CRHR1 antagonist is a compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein Xi is -CRe or N; X2 is -NR1R2, -CR1R2R9, -C(=CR2Rio)Ri, -NHCHR1R2, -OCHR1R2, -SCHR1R2, -CHR2OR10, -CHR2SR10, -C(S)R2 or -C(0)R2; X3 is NH, O, S, -N(Ci-C2 alkyl) or -C(RnRi2), wherein Rn and R12 are each, independently, hydrogen, trifluoromethyl or methyl, or one of Rn and R12 is cyano and the other is hydrogen or methyl, or X3 is N and X3 and R4 form a 5-membered ring substituted at X3 with R5; Ri is Ci-C6 alkyl which may optionally be substituted with one or two substituents R7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF3, C3-C8 cycloalkyl, C1-C4 alkoxy, -0-CO-(Ci-C4 alkyl), -O-CO- NH(Ci-C4 alkyl), -0-CO-N(Ci-C4 alkyl)(Ci-C2 alkyl), -NH(Ci-C4 alkyl), -N(Ci- C2 alkyl)(Ci-C4 alkyl), -S(Ci-C4 alkyl), -N(Ci-C4 alkyl)CO(Ci-C4 alkyl), - NHCO(Ci-C4 alkyl), -COO(Ci-C4 alkyl), -CONH(Ci-C4 alkyl), -CON(Ci-C4 alkyl)(Ci-C2 alkyl), CN, N02, -SO(Ci-C4 alkyl) and -S02(d-C4 alkyl), and wherein said Ci-C6 alkyl and the (C1-C4) alkyl moieties in the foregoing R7 groups may optionally contain one carbon-carbon double or triple bond; R2 is C1-C12 alkyl, C1-C12 alkoxyalkyl, aryl or -(C1-C4 alkylene)aryl wherein said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl; 3- to 8-membered cycloalkyl or -(Ci-C6 alkylene)cycloalkyl, wherein one or two of the ring carbons of said cycloalkyl having at least 4 ring members and the cycloalkyl moiety of said -(Ci-C6 alkylene)cycloalkyl having at least 4 ring members may optionally be replaced by an oxygen or sulfur atom or by N-Rs wherein R8 is hydrogen or C1-C4 alkyl; and wherein each of the foregoing R2 groups may optionally be substituted with from one to three substituents independently selected from chloro, fluoro and Ci- C4 alkyl, or with one substituent selected from bromo, iodo, Ci-C6 alkoxy, -O- CO-(Ci-C6 alkyl), -0-CO-N(d-C4 alkyl)(Ci-C2 alkyl), -S(Ci-C6 alkyl), CN, N02, -SO(Ci-C4 alkyl), and -S02(Ci-C4 alkyl), and wherein said Ci-Ci2 alkyl and/or the C1-C4 alkylene moiety of said -(C1-C4 alkylene)aryl may optionally contain one carbon-carbon double or triple bond; or -NRiR2 or -CRiR2R9 may form a saturated 5- to 8-membered ring which may optionally contain one or two carbon-carbon double bonds and/or in which one or two of the ring carbons may optionally be replaced by an oxygen, nitrogen or sulfur atom and which may be substituted with at least one substituent; R3 is methyl, ethyl, fluoro, chloro, bromo, iodo, cyano, methoxy, OCF3, methylthio, methylsulfonyl, CH2OH, or CH2OCH3; R4 is hydrogen, C1-C4 alkyl, fluoro, chloro, bromo, iodo, C1-C4 alkoxy, trifluoromethoxy, -CH2OCH3, -CH2OCH2CH3, -CH2CH2OCH3, -CH2OCF3, CF3, amino, nitro, -NH(Ci-C4 alkyl), -N(CH3)2, -NHCOCH3 -NHCONHCH3, -SO„(Ci-C4 alkyl) wherein n is 0, 1 or 2, hydroxy, -CO(Ci-C4 alkyl), -CHO, cyano or -COO(Ci-C4 alkyl) wherein said C1-C4 alkyl may optionally contain one double or triple bond and/or may optionally be substituted with one substituent selected from hydroxy, amino, -NHCOCH3, - H(Ci-C2 alkyl), -N(Ci-C2 alkyl)2, -COO(Ci-C4 alkyl), - CO(Ci-C4 alkyl), C1-C3 alkoxy, C1-C3 thioalkyl, fluoro, chloro, cyano and nitro; R5 is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, furanyl, benzofuranyl, benzothiazolyl, or indolyl, wherein each of the above groups R5 is substituted with from one to three substituents independently selected from fluoro, chloro, Ci-C6 alkyl and Ci-C6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C6 alkyl)0(Ci-C6)alkyl, -NHCH3, - N(CH3)2, -COOH, -COO(Ci-C4 alkyl), -CO(Ci-C4 alkyl), -S02NH(Ci-C4 alkyl), - S02N(Ci-C4 alkyl)(Ci-C2 alkyl), -S02NH2, -NHS02(Ci-C4 alkyl), -S(Ci-C6 alkyl) and S02(Ci-C6 alkyl), and wherein the C1-C4 alkyl and the Ci-C6 alkyl moieties of the foregoing R5 groups may optionally be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl; R6 is hydrogen, methyl, fluoro, chloro, bromo, iodo, cyano, hydroxy, -0(Ci-C4 alkyl), -C(0)(Ci-C4 alkyl), -C(0)0(Ci-C4 alkyl), -OCF3, CF3, -CH2OH, - CH2OCH3 or -CH2OCH2CH3; R9 is hydrogen, hydroxy, fluoro, or methoxy; Rio is hydrogen or C1-C4 alkyl. 3. CRHR1 antagonist for use according to claim 2, wherein 4. CRHR1 antagonist for use according to claim 3, wherein Xi is CH. 5. CRHR1 antagonist for use according to any of claims 2 to 4, wherein the 5- to 8-membered ring formed by -NR1R2 or -CR1R2R9 is substituted with at least one substituent selected from C1-C4 alkyl or with a 4-8 membered ring, which may be saturated or may contain one to three double bonds and in which one carbon atom may be replaced by CO or S02 and one to four carbon atoms may optionally be replaced by nitrogen. 6. CRHR1 antagonist for use according to any of claims 2 to 4, wherein X2 is -NHCHR1R2, -OCHR1R2 or -NR1R2. 7. CRHR1 antagonist for use according to claim 6, wherein -NHCHR1R2 is -NHCH(CH2OCH3)2, -NHCH(CH2OCH3)(CH2CH3), - NHCH(CH2CH3)2, -NHCH(CH2CH2OCH3)2, -NHCH(CH3)(CH2CH3) or - NHCHR1R2, wherein Ri is ethyl and R2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl, or -NR1R2 is -N(CH2CH3)(CH3), -N(CH2CH2CH3)2, -N(CH2CH2CH3)(CH2- cyclopropyl), -N(CH2CH3)(CH2CH2CH2CH3), -N(CH2CH2OCH3)2, or - N(CH2CH2OCH3)(CH2CH2CH3) or -OCHR1R2 is -OCH(CH2CH3)2, -OCH(CH2CH3)CH3, - OCH(CH2CH3)(CH2CH2CH3), -OCH(CH2CH3)(CH2OCH3). 8. CRHR1 antagonist for use according to any of claims 2 to 7, wherein R3 and R4 are methyl. 9. CRHR1 antagonist for use according to any of claims 2 to 8, wherein X3 is O. 10. CRHRl antagonist for use according to any of claims 2 to 9, wherein R5 is phenyl substituted with from one to three substituent(s) independently selected from the group CH3, CH2CH3, OCH3, CI, F, CF3. 11. CRHRl antagonist for use according to any of claims 1 to 10, wherein the CRHRl antagonist is a compound of the formula (VI) or a pharmaceutically acceptable salt thereof, wherein X4 is O or NH. 12. CRHRl antagonist for use according to claim 1, wherein the CRHRl antagonist is a class I CRHRl antagonist. 13. CRHRl antagonist for use according to claim 1, wherein the CRHRl antagonist is a class II CRHRl antagonist. 14. CRHRl antagonist for use according to claim 1, wherein the CRHRl antagonist is selected from the group consisting of CP 154,526, Antalarmin, CRA 5626, Emicerfont, DMP-696, DMP-904, DMP-695, SC-241, BMS-561388, Pexacerfont, R121919, NBI30545, PD-171729, Verucerfont, NBI34041, NBI35965, SN003, CRA0450, SSR125543A, CP-316,311, CP-376,395, NBI-27914, ONO- 2333Ms, NBI-34101, PF-572778, GSK561579 and GSK586529. 15. CRHR1 antagonist for use according to claim 1, wherein the CRHR1 antagonist is DMP-696. 16. CRHR1 antagonist for use according to claim 1, wherein the CRHR1 antagonist is CP-316,311. 17. CRHR1 antagonist for use according to claim 1, wherein the CRHR1 antagonist is SSR125543A. 18. CRHR1 antagonist for use according to any of the preceding claims, wherein CRH overactivity is detected by determining the status of one or more markers indicative for CRH overactivity. 19. CRHR1 antagonist for use according to claim 18, wherein the marker is selected from the group consisting of a biomarker, a set of bio markers and a clinical marker. 20. CRHR1 antagonist for use according to any of claim 19, wherein the biomarker or the set of bio markers is obtained by a genome- wide screening for single nucleotide polymorphisms in patients with depressive and/or anxiety symptoms. 21. CRHR1 antagonist for use according to claims 19 or 20, wherein the biomarker or the set of bio markers is selected from the group comprising: • SNP rs6437726, • SNP rsl986684, • SNP rs7380830, • SNP rs3903768, • SNP rs7325978, • SNP rsl3585, • SNP rs9368373, • SNP rsl0935354, • SNP rs8095703, • SNP rs 10206851, • SNP rs9542977, • SNP rs4942879, • SNP rs9542954, • SNP rsl593478, • SNP rs9542951, • SNP rs2188534, • SNP rs 12524124, • SNP rs4352629, • SNP rs7448716, • SNP rsl 1873533, • SNP rsl0062658, • SNP rsl 2547917, • SNP rsl038268, • SNP rs2375811, • SNP rsl352671, • SNP rs364331, • SNP rsl 924949, • SNP rsl 1025990, • SNP rs3758562, and/or • SNP rsl0156056. 22. CRHRl antagonist for use according to any of claims 19 to 21, wherein the bio marker or the set of biomarkers constituting a marker for CRH activity is selected from one or more biomarkers from the group comprising: SNP rs6437726 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 1, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs 1986684 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 2, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs7380830 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 3, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs3903768 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 4, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs7325978 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 5, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rsl3585 which is represented by a single polymorphic change at position 185 of SEQ ID NO: 6, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs9368373 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 7, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rsl0935354 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 8, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs8095703 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 9, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs 10206851 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 10, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs9542977 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 11, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs4942879 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 12, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs9542954 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 13, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, SNP rsl593478 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 14, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs9542951 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 15, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs2188534 which is represented by a single polymorphic change at position 200 of SEQ ID NO: 16, wherein in one or two alleles the wild-type nucleotide G is replaced by indicator nucleotide T, SNP rs 12524124 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 17, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs4352629 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 18, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs7448716 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 19, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rsl 1873533 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 20, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, SNP rs 10062658 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 21, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs 12547917 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 22, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs 1038268 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 23, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs2375811 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 24, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rsl352671 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 25, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, SNP rs364331 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 26, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, SNP rs 1924949 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 27, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rsl 1025990 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 28, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs3758562 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 29, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, and/or SNP rsl 0156056 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 30, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide G. 23. CRHRl antagonist for use according to any of claims 19 to 22, wherein the set of biomarkers comprises at least 15, at least 20 or at least 25 of the biomarkers as defined in claims 21 or 22. 24. CRHRl antagonist for use according to any of claims 19 to 23, wherein the set of biomarkers consists of the biomarkers as defined in claims 21 or 22. 25. CRHRl antagonist for use according to any of claims 18 or 24, wherein the biomarker is REM density. 26. CRHRl antagonist for use according to any of claims 18 or 25, wherein the marker is a combination of a biomarker or set of biomarkers as defined in any of claims 20 to 24 with the biomarker REM density. |
Field of the Invention
The present invention relates to a corticotropin releasing hormone receptor type 1 (CRHR1) antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having corticotropin releasing hormone (CRH) overactivity.
Background of the Invention
While current antidepressant drugs are effective treatments of depression and anxiety symptoms in a number of psychiatric disorders, a large fraction of patients only show partial remission of symptoms or do not respond at all (Trivedi et al. , Am J
Psychiatry, 2006). This may be due to the fact that these drugs do not target the inherent pathophysiologic disturbances leading to clinical condition in these patients. A number of novel antidepressant strategies, derived from both animal studies and human studies have been tested, but so far with little success. One of these approaches is the use of corticotropin releasing hormone receptor type 1 (CRHR1) antagonists. A wealth of data ranging from molecular studies in experimental animals to open label studies in human patients indicate that CRHR1 antagonists are a promising novel approach in the treatment of depression and anxiety (Ising et al. , Exp Clin Psychopharmacol, 2007; Holsboer et al. , CNS Spectr, 2001; Paez-Pereda et al., Expert Opin Invest Drugs, 2011). However, so far all randomized clinical trials have failed to demonstrate the superiority of this drug to placebo (Coric et al., Depress Anxiety, 2010; Binneman et al., Am J Psychiatry, 2008). Hence, there is still a need for antidepressant drugs effective in the treatment of depression and/or anxiety symptoms in a number of psychiatric disorders. It has now been found that despite the so far unsuccessful clinical trials, a specific group of patients, i.e. patients suffering from central corticotropin releasing hormone (CRH) overactivity, profits from the treatment with CRHRl antagonists.
Summary of the Invention
One aspect of the invention relates to a corticotropin releasing hormone receptor type 1 (CRHRl) antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having corticotropin releasing hormone (CRH) overactivity.
In an embodiment of the invention, the CRHRl antagonist is a compound of formula
(I)
or a pharmaceutically acceptable salt thereof, wherein Xi is -CRe or N;
X 2 is -NR1R2, -CR1R2R9, -C(=CR 2 Rio)Ri, -NHCHRiR 2 , -OCHRiR 2 , -SCHRiR 2 , -CHR 2 ORio, -CHR 2 SRio, -C(S)R 2 or -C(0)R 2 ; X 3 is NH, O, S, -N(Ci-C 2 alkyl) or -C(RnRi 2 ), wherein R„ and R u are each, independently, hydrogen, trifluoromethyl or methyl, or one of Ru and R 12 is cyano and the other is hydrogen or methyl, or
X 3 is N and X 3 and R4 form a 5-membered ring substituted at X 3 with R5;
Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C 1 -C4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O-CO- NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), - NHCO(Ci-C 4 alkyl), -COO(d-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and the (Ci-C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon-carbon double or triple bond;
R 2 is Ci-Ci 2 alkyl, Ci-Ci 2 alkoxyalkyl, aryl or -(Ci-C 4 alkylene)aryl wherein said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl;
3- to 8-membered cycloalkyl or -(Ci-C 6 alkylene)cycloalkyl, wherein one or two of the ring carbons of said cycloalkyl having at least 4 ring members and the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may optionally be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or Ci-C 4 alkyl; and wherein each of the foregoing R 2 groups may optionally be substituted with from one to three substituents independently selected from chloro, fluoro and Ci- C 4 alkyl, or with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -O- CO-(Ci-C 6 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(Ci-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-Ci 2 alkyl and/or the Ci-C 4 alkylene moiety of said -(Ci-C 4 alkylene)aryl may optionally contain one carbon-carbon double or triple bond; or -NRiR 2 or -CRiR 2 R9 may form a saturated 5- to 8-membered ring which may optionally contain one or two carbon-carbon double bonds and/or in which one or two of the ring carbons may optionally be replaced by an oxygen, nitrogen or sulfur atom and which may be substituted with at least one substituent;
R 3 is methyl, ethyl, fluoro, chloro, bromo, iodo, cyano, methoxy, OCF 3 , methylthio, methylsulfonyl, CH 2 OH, or CH 2 OCH 3 ;
R 4 is hydrogen, Ci-C 4 alkyl, fluoro, chloro, bromo, iodo, Ci-C 4 alkoxy,
trifluoromethoxy, -CH 2 OCH 3 , -CH 2 OCH 2 CH 3 , -CH 2 CH 2 OCH 3 , -CH 2 OCF 3 , CF 3 , amino, nitro, -NH(Ci-C 4 alkyl), -N(CH 3 ) 2 , -NHCOCH 3 -NHCONHCH 3 , -SO„(Ci- C 4 alkyl) wherein n is 0, 1 or 2, hydroxy, -CO(Ci-C 4 alkyl), -CHO, cyano or - COO(Ci-C 4 alkyl) wherein said Ci-C 4 alkyl may optionally contain one double or triple bond and/or may optionally be substituted with one substituent selected from hydroxy, amino, -NHCOCH 3 , -NH(Ci-C 2 alkyl), -N(Ci-C 2 alkyl) 2 , -
COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), Ci-C 3 alkoxy, Ci-C 3 thioalkyl, fluoro, chloro, cyano and nitro;
R 5 is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, furanyl, benzofuranyl, benzothiazolyl, or indolyl, wherein each of the above groups R 5 is substituted with from one to three substituents independently selected from fluoro, chloro, Ci-C 6 alkyl and Ci-C 6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C 6 alkyl)0(Ci-C6)alkyl, -NHCH 3 , - N(CH 3 ) 2 , -COOH, -COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), -S0 2 NH(Ci-C 4 alkyl), - S0 2 N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S0 2 NH 2 , -NHS0 2 (Ci-C 4 alkyl), -S(Ci-C 6 alkyl) and S0 2 (Ci-C 6 alkyl), and wherein the Ci-C 4 alkyl and the Ci-C 6 alkyl moieties of the foregoing R 5 groups may optionally be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl; Re is hydrogen, methyl, fluoro, chloro, bromo, iodo, cyano, hydroxy, -0(Ci-C 4 alkyl), -C(0)(Ci-C 4 alkyl), -C(0)0(Ci-C 4 alkyl), -OCF 3 , CF 3 , -CH 2 OH, - CH 2 OCH 3 or -CH 2 OCH 2 CH 3 ;
R9 is hydrogen, hydroxy, fluoro, or methoxy;
Rio is hydrogen or C 1 -C4 alkyl.
Further, CRHRl antagonists of the invention encompass compounds of formula (I) as defined above, wherein Xi is -CR 6 . Optionally, in the CRHRl antagonists of the invention Xi is -CR6, wherein 5 is hydrogen. In a further embodiment of the CRHRl antagonists of the invention, the 5- to 8- membered ring formed by -NRiR 2 or -CR 1 R 2 R 9 of the compound of formula (I) as defined above is substituted with at least one substituent selected from C 1 -C4 alkyl or with a 4-8 membered ring, which may be saturated or may contain one to three double bonds and in which one carbon atom may be replaced by CO or S0 2 and one to four carbon atoms may optionally be replaced by nitrogen.
In a specific embodiment of the CRHRl antagonists of the invention, X 2 of the compound of formula (I) as defined above is -NHCHR 1 R 2 , -OCHR 1 R 2 or -NRiR 2 .
Optionally, in the compounds of formula (I) as defined above -NHCHR 1 R 2 is - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 „ - NHCH(CH 2 CH 2 OCH 3 ) 2 or -NHCHRiR 2, wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl, or -NRjR 2 is -N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , - N(CH 2 CH 2 CH 3 )(CH 2 -cyclopropyl), -N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -
N(CH 2 CH 2 OCH 3 ) 2 , or -N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ), or -OCHRiR 2 is - OCH(CH 2 CH 3 ) 2 , -OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ), - OCH(CH 2 CH 3 )(CH 2 OCH 3 ). In another embodiment of the CRHRl antagonists of the invention, R 3 and R4 of the compound of formula (I) as defined above are methyl.
In a further embodiment of the CRHRl antagonists of the invention, X 3 of the compound of formula (I) as defined above is O.
Another embodiment of the invention relates to the CRHRl antagonists of formula (I) as defined above, wherein R 5 is phenyl substituted with from one to three substituent(s) independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, CF 3 .
A specific embodiment of the invention relates CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having corticotropin releasing hormone (CRH) overactivity, wherein the CRHRl antagonist is a compound of the formula (VI)
(VI) or a pharmaceutically acceptable salt thereof, wherein
X 4 is O or NH.
In another specific embodiment, the CRHRl antagonist of the invention is a class I or class II CRHRl antagonist.
Another specific embodiment of the invention relates to a CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having corticotropin releasing hormone (CRH) overactivity, wherein the CRHRl antagonist is selected from the group consisting of CP 154,526, Antalarmin, CRA 5626, Emicerfont, DMP-696, DMP-904, DMP-695, SC-241, BMS-561388, Pexacerfont, R121919, NBI30545, PD-171729, Verucerfont, NBI34041, NBI35965, SN003, CRA0450, SSR125543A, CP-316,311, CP-376,395, NBI-27914, ONO-2333Ms, NBI-34101, PF-572778, GSK561579 and GSK586529.
In an exemplary embodiment of the present invention, the CRHRl antagonist is DMP-696.
In an exemplary embodiment of the present invention, the CRHRl antagonist is CP 316,311. In an exemplary embodiment of the present invention, the CRHR1 antagonist is SSR125543A. Brief Description of the Drawings
Figure 1: Graph of the phenotypic distribution of ln(AAUC) at in-patient admission. The X-axis shows the In of the AUC of the ACTH response and the Y-axis the frequency in total N/bin. The dashed vertical indicates the cut-off for being classified as a low vs. high responder. AAUC is the area under the curve of the ACTH response.
Figure 2: Increased REMS activity in CRH-COE CNS mice is suppressed by DMP696 (50mg/kg/d) application via drinking water. Treatment day one, light grey; treatment day 2, dark grey; treatment day three, black. Symbols indicate significant differences between baseline and treatment day one (+), two (#) or three (*). Light and dark bar on the x-axis indicate light and dark period, respectively.
Figure 3: Increased activity of REMS in CRH-COE CNS is suppressed by application of the CRH-Rl antagonist SSR125543 (50mg/kg/d) via drinking water. Baseline day, white; treatment day two, dark grey; treatment day three, black. Symbols indicate significant differences between baseline and treatment day two (#) or three (*). Light and dark bar on the x-axis indicate light and dark period, respectively.
Figure 4: REMS activity in Cor26 CRH mice is suppressed by application of the CRH-Rl antagonist CP-316311 (50mg/kg/d) via drinking water. Baseline day, white; treatment day two, dark grey; treatment day three, black.
Definitions
Where the term "comprise" or "comprising" is used in the present description and claims, it does not exclude other elements or steps. For the purpose of the present invention, the term "consisting of is considered to be an optional embodiment of the term "comprising of. If hereinafter a group is defined to comprise at least a certain number of embodiments, this is also to be understood to disclose a group which optionally consists only of these embodiments. Where an indefinite or a definite article is used when referring to a singular noun such as "a" or "an" or "the", this includes a plural form of that noun unless specifically stated. Vice versa, when the plural form of a noun is used it refers also to the singular form. For example, when SNPs are mentioned, this is also to be understood as a single SNP.
Furthermore, the terms first, second, third or (a), (b), (c) and the like in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate
circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.
The term "corticotropin releasing hormone receptor 1" of "CRHR1" of "CRFi" refers to the receptor which binds to corticotropin-releasing hormone.
The term "CRHRl antagonist" refers to a compound capable of binding directly or indirectly to a CRH receptor 1 so as to modulate the receptor mediated activity. CRHRl antagonists are well known in the literature and are e.g. described in
WO 94/13676, EP 0 773 023, WO 2004/047866, WO 2004/094420, WO 98/03510, WO 97/029109, WO 2006/044958, WO 2001/005776 and WO 95/033750.
Exemplary CRHRl antagonists comprise NBI30775/R121919 (Neurocrine), CP316.311 (Pfizer), CP154,526 (Pfizer), Emicerfont (Glaxo), ONO-2333Ms (Ono Pharmaceutical), Pexacerfont (Bristol-Myers- Squibb), SSR125543 (Sanofi-Aventis), NBI-34101 (Neurocrine) and TAI041 (Taisho).
Most of the non-peptidic CRHRl antagonists can be described by or adhere to a pharmacophore model that comprises or features a lipophilic top group, a heterocyclic core containing an invariable hydrogen bond acceptor, which is almost always a heterocyclic nitrogen, and a lipophilic, usually aromatic, bottom group.
Class I CRHR1 antagonists as used herein may be characterized in that the heterocyclic hydrogen bond acceptor and the bottom group are connected by a two- atom linker as exemplified by CRHR1 antagonists R-121919, NBI-30545, CP- 154526, DMP696, pexacerfont (BMS-562086), emicerfont (GW876008), or verucerfont (GSK561679). Class II CRF1R antagonists as used herein may be characterized by a two -atom linker between hydrogen bond acceptor and the bottom group as present in CRHR1 antagonist SSR125543A.
"Downstream target" or "molecule which is downstream of the CRHRl receptor" as used herein may denote a molecule such as an endogenous molecule (e.g. peptide, protein, lipid, nucleic acid or oligonucleotide) that is regulated by CRHRl directly or indirectly. The direct or indirect regulation may comprise direct or indirect modulation of the activity and/or expression level and/or localization, degradation, stability of the downstream target.
The term "normal CRH activity" refers to a range of CRH activity which can be found in human beings who are not affected by a condition which is associated with an increase of CRH activity (such as depression). A value indicative for normal CRH activity is usually considered to be indicative or predictive for a patient not responding to a treatment with a CRHRl antagonist. Further definitions of the terms will be given below in the context of which the terms are used.
Detailed Description of the Invention
While so far all randomized clinical trials have failed to demonstrate the superiority of CRHRl antagonist to placebo in the treatment of depression and anxiety, it has now been found that a certain patient group, i.e. patients with corticotropin releasing hormone (CRH) overactivity, is responsive to the treatment with corticotropin releasing hormone receptor type 1 (CRHRl) antagonists.
Hence, the present invention relates to CRHRl antagonists for use in the treatment of depressive symptoms and/or anxiety symptoms in said novel patient group, i.e.
patients having CRH overactivity.
The terms "CRH overactivity", "CRH system overactivity", "CRH hyperactivity", "CRH hyperdrive" or "central CRH hyperdrive" are used herein interchangeable. An indication for CRH overactivity may be an increase in activity or concentration of CRH or of one or several molecules downstream of the CRHRl receptor, that are activated or whose concentration is increased based on the activation of CRHRl receptor upon CRH binding. A further indication for CRH overactivity may be a decrease in activity or concentration of one or several molecules downstream of the CRHRl receptor, that are inactivated or whose concentration is decreased based on the activation of CRHRl receptor upon CRH binding. A value indicative for CRH overactivity is usually considered to be indicative or predictive for a patient responding to a treatment with a CRHRl antagonist. CRH activity vs. CRH overactivity may be defined relatively to the whole group, e.g. by using a median split of the area under the curve of the ACTH response in the dex/CRH test.
Responses in the upper median may be categorized as being predictive of CRH overactivity, while responses in the lower median are indicative of normal CRH activity. A "value indicative for CRH activity", a "value indicative for CRH overactivity" and/or a "value indicative for normal CRH activity" can be obtained by determining the concentration or activity of CRH and/or of a downstream target of the CRHRl receptor. The analysis is usually set up in a way that it can be excluded that the modulation of activity or concentration of a downstream target of the CRHRl receptor is due to another disturbance than CRH activity. For instance, the concentrations or activities of adrenocorticotrophin (ACTH) and/or Cortisol are useful biomarkers for determining a value indicative for CRH overactivity. Typically, the CRH overactivity in each patient may be determined by measuring the ACTH and/or Cortisol level response to a combined dexamethasone
suppression/CRH stimulation test as described in Heuser et al. (J Psychiatr Res., 1994).
The neuroendocrine response to the dex/CRH test may be analyzed using the total area under the curve (AUC) of the ACTH response. Patients suffering from depression normally show an increased release of Cortisol and of adrenocorticotropic hormone (ACTH) in response to the combined treatment with dexamethasone and CRH as performed during the test, thus indicating a dysregulation of the
hypothalamic-pituitary-adrenal (HP A) axis. Patients with a high HPA axis dysregulation show AUC values of Cortisol of between 3000 and 18000 AUC units (ng/ml x 75 min) and/or AUC values of ACTH of between 1000 and 6500 AUC units (pg/ml x 75 min). Patients having a low HPA axis dysregulation show AUC values of Cortisol of between 300 and 2500 AUC units (ng/ml x 75 min) and/or AUC values of ACTH of between 250 and 1000 AUC units (pg/ml x 75 min) Various
antidepressants lead to a reduction of these increased Cortisol and ACTH levels in a combined dex/CRH test performed after the treatment with the antidepressants.
Treatment response to antidepressants can thus be determined by performing a second dex/CRH test after treatment with the antidepressant and comparing the neuroendocrine response to the one shown in a combined dex/CRH test performed prior to treatment with the antidepressant.
In one embodiment of a combined dexamethasone suppression CRH stimulation test, subjects are pre-treated with dexamethasone and blood is drawn in certain intervals. Further, human CRH is administered after the first pretreatment with dexamethasone. Plasma ACTH and/or Cortisol concentrations are then determined. The
neuroendocrine response to the dex/CRH test may be analyzed using the total area under the curve (AUC) of the ACTH response. Details of an exemplary dex/CRH test are also described in Example 1 below. Depressive symptoms comprise inter alia low mood, low self-esteem, loss of interest or pleasure, psychosis, poor concentration and memory, social isolation,
psychomotor agitation/retardation, thoughts of death or suicide, significant weight change (loss/gain), fatigue, and feeling of worthlessness. The depressive disorders can last for weeks to lifelong disorder with periodic reoccurring depressive episodes. For the diagnosis of the depression mode (e.g. moderate or severe depression) the Hamilton Depression Rating Scale (HAM-D) (Hamilton, J Neurol Neurosurg Psychiatry, 1960) may be used. The depression mode may be also, in addition or alternatively, rated by alternative scales as the Beck Depression Inventory (BDI), the Montgomery- Asberg Depression Scale (MADRS), the Geriatric Depression Scale (GDS), and/or the Zung Self-Rating Depression Scale (ZSRDS).
Anxiety symptoms comprise inter alia panic disorders, generalized anxiety disorder, phobias and posttraumatic stress disorder. Typical symptoms of anxiety are or include avoidance behavior which may lead to social isolation, physical ailments like tachycardia, dizziness and sweating, mental apprehension, stress and/or tensions. The strength of these symptoms ranges from nervousness and discomfort to panic and terror in humans or animals. Most anxiety disorders may last for weeks or even months, some of them even for years and worsen if not suitably treated. For measuring the severity of anxiety symptoms, the Hamilton Anxiety Rating Scale (HAM- A) and/or the State-Trait Anxiety Rating Scale (STAI) can be used.
A CRHRl antagonist which may be used according to the invention in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH
overactivity is a compound of formula (I)
or a pharmaceutically acceptable salt thereof, wherein Xi is -CRe or N;
X 2 is -NR1R2, -CR1R2R9, -C(=CR 2 Rio)Ri, -NHCHR1R2, -OCHR1R2, -SCHR1R2, -CHR2OR10, -CHR2SR10, -C(S)R 2 or -C(0)R 2 ;
X 3 is NH, O, S, -N(Ci-C 2 alkyl) or -C(RnRi 2 ), wherein Rn and R12 are each, independently, hydrogen, trifluoromethyl or methyl, or one of Rn and R 12 is cyano and the other is hydrogen or methyl, or
X 3 is N and X 3 and R4 form a 5-membered ring substituted at X 3 with R5;
Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C 1 -C4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O-CO- NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), - NHCO(Ci-C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (d-C 4 alkyl), and wherein said Ci-C 6 alkyl and the (C 1 -C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon-carbon double or triple bond;
R 2 is C 1 -C 12 alkyl, C 1 -C 12 alkoxyalkyl, aryl or -(C 1 -C 4 alkylene)aryl wherein said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl;
3- to 8-membered cycloalkyl or -(Ci-C 6 alkylene)cycloalkyl, wherein one or two of the ring carbons of said cycloalkyl having at least 4 ring members and/or the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may optionally be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl; and wherein each of the foregoing R 2 groups may optionally be substituted with from one to three substituents independently selected from chloro, fluoro and Ci- C 4 alkyl, or with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -O- CO-(Ci-C 6 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(Ci-C 6 alkyl), CN, N0 2 , -SO(Ci-C4 alkyl), and -S0 2 (Ci-C 4 alkyl), and wherein said C 1 -C 12 alkyl and/or the C 1 -C 4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may optionally contain one carbon-carbon double or triple bond; or -NR 1 R 2 or -CR 1 R 2 R 9 may form a saturated 5- to 8-membered ring which may optionally contain one or two carbon-carbon double bonds and/or in which one or two of the ring carbons may optionally be replaced by an oxygen, nitrogen or sulfur atom and which may be substituted with at least one substituent;
R3 is methyl, ethyl, fluoro, chloro, bromo, iodo, cyano, methoxy, OCF 3 , methylthio, methylsulfonyl, CH 2 OH, or CH 2 OCH 3 ; R4 is hydrogen, C 1 -C 4 alkyl, fluoro, chloro, bromo, iodo, C 1 -C 4 alkoxy,
trifluoromethoxy, -CH 2 OCH 3 , -CH 2 OCH 2 CH 3 , -CH 2 CH 2 OCH 3 , -CH 2 OCF 3 , CF 3 , amino, nitro, -NH(Ci-C 4 alkyl), -N(CH 3 ) 2 , -NHCOCH 3 -NHCONHCH 3 , -SO„(Ci- C 4 alkyl) wherein n is 0, 1 or 2, hydroxy, -CO(Ci-C 4 alkyl), -CHO, cyano or - COO(Ci-C 4 alkyl) wherein said C 1 -C 4 alkyl may optionally contain one double or triple bond and/or may optionally be substituted with one substituent selected from hydroxy, amino, -NHCOCH 3 , -NH(Ci-C 2 alkyl), -N(Ci-C 2 alkyl) 2 , - COO(Ci-C 4 alkyl), -CO(d-C 4 alkyl), Ci-C 3 alkoxy, Ci-C 3 thioalkyl, fluoro, chloro, cyano and nitro;
R 5 is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, furanyl, benzofuranyl, benzothiazolyl, or indolyl, wherein each of the above groups R 5 is substituted with from one to three substituents independently selected from fluoro, chloro, Ci-C 6 alkyl and Ci-C 6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C 6 alkyl)0(Ci-C6)alkyl, -NHCH 3 , - N(CH 3 ) 2 , -COOH, -COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), -S0 2 NH(Ci-C 4 alkyl), - S0 2 N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S0 2 NH 2 , -NHS0 2 (Ci-C 4 alkyl), -S(d-C 6 alkyl) and S0 2 (Ci-C 6 alkyl), and wherein the C 1 -C 4 alkyl and the Ci-C 6 alkyl moieties of the foregoing R 5 groups may optionally be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl; R 6 is hydrogen, methyl, fluoro, chloro, bromo, iodo, cyano, hydroxy, -0(Ci-C 4 alkyl), -C(0)(Ci-C 4 alkyl), -C(0)0(Ci-C 4 alkyl), -OCF 3 , CF 3 , -CH 2 OH, - CH 2 OCH 3 or -CH 2 OCH 2 CH 3 ;
R9 is hydrogen, hydroxy, fluoro, or methoxy; Rio is hydrogen or Ci-C 4 alkyl.
In an embodiment of the invention, the CRHRl antagonist of the present invention is a compound of formula (I) as defined above, wherein Xi is -CR 6 . Alternatively, the CRHRl antagonists of the invention encompass compound of formula (I) as defined above, wherein Xi is N.
If Xi is -CR 6 , R 6 may be selected from the group consisting of hydrogen, methyl, fluoro, chloro, bromo, iodo, cyano, hydroxy, -0(Ci-C 4 alkyl), -C(0)(Ci-C 4 alkyl), - C(0)0(Ci-C 4 alkyl), -OCF 3 , CF 3 , -CH 2 OH, -CH 2 OCH 3 or -CH 2 OCH 2 CH 3 . In a specific embodiment of the CRHRl antagonists of the invention R 6 is hydrogen.
A further embodiment of the invention relates to a CRHRl antagonist of formula (I) as defined above, wherein X 2 is selected from the group consisting of -NHCHRiR 2 , - OCHRiR 2 or -N¾R 2 .
In a specific embodiment, X 2 is -NHCHRiR 2 . In another specific embodiment, X 2 is -OCHRiR 2 . In a further specific embodiment, X 2 is -NRiR 2 . If X 2 is -NHCHRiR 2 , it is optionally selected from the group consisting of - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 , - NHCH(CH 2 CH 2 OCH 3 ) 2 , -NHCH(CH 3 )(CH 2 CH 3 ) or -NHCHRiR 2 , wherein ¾ is ethyl and R 2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl. More specifically X 2 is -NHCH(CH 2 CH 3 ) 2 . Alternatively, X 2 is -NHCHRiR 2 wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl. Alternatively, X 2 is -NHCH(CH 2 CH 2 OCH 3 ) 2 . Alternatively, X 2 is - NHCH(CH 2 OCH 3 ) 2 . Alternatively, X 2 is -NHCH(CH 3 )(CH 2 CH 3 ). More
specifically, X 2 is Alternatively, if X 2 is -NRiR 2 , it is optionally selected from the group consisting of ■ N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , -N(CH 2 CH 2 CH 3 )(CH 2 -cyclopropyl), - N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -N(CH 2 CH 2 OCH 3 ) 2 , or- N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ). Alternatively, X 2 is -N(CH 2 CH 2 OCH 3 ) 2 .
If X 2 is -OCHRiR 2 , it is optionally selected from -OCH(CH 2 CH 3 ) 2 , - OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ), -OCH(CH 2 CH 3 )(CH 2 OCH 3 ). More specifically, X 2 is -OCH(CH 2 CH 3 ) 2 .
Further CRHR1 antagonists for use according to the invention encompass
compounds of formula (I) as defined above wherein Ri is Ci-C 6 alkyl.
In another embodiment of the invention, Ri of formula (I) is Ci alkyl. In a further embodiment of the invention Ri of formula (I) is C 2 alkyl. In a further embodiment of the invention, Ri of formula (I) is C 3 alkyl. In a further embodiment of the invention, Ri of formula (I) is C 4 alkyl. In a further embodiment, of the invention, Ri of formula (I) is C 5 alkyl. In a further embodiment of the invention, Ri of formula (I) is C 6 alkyl.
Any of the aforementioned Ri groups may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -Cs cycloalkyl, Ci-C 4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O- CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci- C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl). Said Ci-C 6 alkyl and the (C 1 -C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond.
Specifically, Ri is Ci-C 6 alkyl substituted with substituent R 7 selected from the group consisting of F, CF 3 , C 1 -C 4 alkoxy and C 3 -Cs cycloalkyl. More specifically, Ri is selected from the group consisting of -CH 2 OCH 3 , -CH 2 CH 2 OCH 3 and -CH 2 - cyclopropyl.
In another embodiment of the invention, R 2 of formula (I) is Ci-Ci 2 alkyl. In another embodiment of the invention, R 2 of formula (I) is Ci-Ci 2 alkoxyalkyl. In a further embodiment, R 2 is aryl. In another embodiment, R 2 is -(C 1 -C 4 alkylene)aryl. In a further embodiment of the invention, R 2 is a 3- to 8-membered cycloalkyl. In another embodiment of the invention, R 2 is a -(Ci-C 6 alkylene)cycloalkyl. Optionally, if the R 2 group is aryl or -(C 1 -C 4 alkylene)alkyl said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl. More specifically, R 2 is oxadiazolyl.
Optionally, if the R 2 group is a 3- to 8-membered cycloalkyl or a -(Ci-C 6
alkylene)cycloalkyl, one or two of the ring carbons of said cycloalkyl having at least 4 ring members and/or the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl.
Each of the aforementioned R 2 groups may be substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Alternatively, each of the aforementioned R 2 groups may be substituted with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -0-CO-(Ci-C 6 alkyl), -O-CO- N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(d-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and -S0 2 (Ci-C 4 alkyl). Optionally, said C 1 -C 12 alkyl and/or the C 1 -C4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may contain one carbon-carbon double or triple bond.
In a specific embodiment of the invention, R 2 is aryl substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Optionally, R 2 is aryl substituted with one substituent selected from chloro, fluoro and C 1 -C 4 alkyl. More specifically, R 2 is oxadiazolyl substituted with one substituent independently selected from chloro, fluoro, C 1 -C 4 alkyl, CF 3 and cyclopropyl. Even more specifically, R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention, X 2 is -NHCHR 1 R 2 , wherein Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, Cl-C 4 alkoxy, -0-CO-(d-C 4 alkyl), -0-CO-NH(Ci-C 4 alkyl), -0-CO-N(d-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci-C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci-C 4 alkyl), - COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and the (Ci- C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond and R 2 is oxadiazolyl substituted with methyl.
Optionally, X 2 is -NHCRiR 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention X 2 is -NRiR 2 which forms a 5- to 8- membered ring. In a further embodiment of the invention X 2 is -CRiR 2 R 9 which forms a saturated 5- to 8-membered ring. The ring formed by -NRiR 2 or -CRiR 2 R 9 optionally contains one or two carbon-carbon double bonds. Alternatively or additionally, one or two of the ring carbons may be replaced by an oxygen, nitrogen or sulfur atom.
In a specific embodiment, -NRiR 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by an oxygen, nitrogen or sulfur atom. Optionally, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom. More specifically, the 5 -membered ring formed by -NR 1 R 2 is a pyrazol-l-yl. Alternatively, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a sulfur atom.
The above described 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 may be substituted with at least one substituent. In one embodiment of the invention, the 5- to 8-membered ring formed by -NR1R2 or -CR1R2R9 is substituted with one substituent selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another
embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or - CR 1 R 2 R 9 is substituted with two substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8- membered ring formed by -NR1R2 or -CR1R2R9 is substituted with three substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or - CR 1 R 2 R 9 is substituted with four substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring.
Said 4-8 membered ring may be saturated or may contain one to three double bonds. Optionally, the 4-8 membered ring is saturated. Additionally, one carbon atom of said 4-8 membered ring may be replaced by CO. Alternatively, one carbon atom of said 4-8 membered ring may be replaced by SO 2 . Alternatively or additionally, one to four carbon atom(s) of the 4-8 membered ring may be replaced by nitrogen.
Optionally, two carbon atoms are replaced by nitrogen. More specifically, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by CO. Alternatively, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by SO 2 . In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NR 1 R 2 is substituted with
Optionally, X 2 is
In an alternative embodiment, the 4-8 membered ring contains one to three double bonds. Optionally, the 4-8 membered ring contains two double bonds. Additionally, one carbon atom of the 4-8 membered ring may be replaced by nitrogen and one carbon atom may be replaced by sulfur. Optionally, the above described ring is a 5 membered ring. In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 R9 is substituted with thiazol.
Optionally, X 2 is a 5-membered ring formed by -NRiR 2 containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom and wherein said 5-membered ring is substituted with thiazol. In a specific embodiment of the invention, the 5-membered ring formed by -NRiR 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with at least one C 1 -C 4 alkyl. In another embodiment, the 5- membered ring formed by -NRiR 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with two C 1 -C 4 alkyl substituents. In another embodiment, the 5-membered ring formed by -NRiR 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with three C 1 -C 4 alkyl substituents. Optionally, X 2 is 3,5- dialkylpyrazol-l-yl, such as 3,5-diethylpyrazol-l-yl.
A further embodiment of the invention encompasses CRHRl antagonists of formula (I) as defined above, wherein X 3 is NH, O, NCH 3 , or N, whereby, if X 3 is N, X 3 and R4 form a 5-membered ring substituted at X 3 with R5. Specifically, X 3 of formula (I) as defined above is N and X 3 and R 4 form a 5-membered ring substituted at X 3 with R 5 . More specifically, X 3 of formula (I) as defined above is N and X 3 and R 4 form a 5-membered ring substituted at X 3 with R5 wherein X 3 and R 4 form a group -N- CH 2 CH 2 -. Alternatively, X 3 is O or NH, more specifically X 3 is O. The CRHRl antagonist of the invention further encompasses a compound of formula (I) as defined above, wherein R 3 is methyl. In a further embodiment of the invention, R 4 of formula (I) as defined above is C 1 -C4 alkyl. Optionally R 4 of formula (I) as defined above is methyl. Alternatively, R 4 of formula (I) as defined above is ethyl. The present invention also encompasses CRHRl antagonists wherein both R 3 and R 4 are methyl.
In another embodiment of the invention, the CRHRl antagonist is a compound of formula (I) as defined above, wherein R 5 is phenyl substituted with from one to three substituents independently selected from fluoro, chloro, Ci-C 6 alkyl and Ci-C 6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C 6 alkyl)0(Ci-C 6 )alkyl, -NHCH3, -N(CH 3 ) 2 , - COOH, -COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), -S0 2 NH(Ci-C 4 alkyl), -S0 2 N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S0 2 NH 2 , -NHS0 2 (Ci-C 4 alkyl), -S(d-C 6 alkyl) and S0 2 (d-C 6 alkyl). The C 1 -C4 alkyl and the Ci-C 6 alkyl moieties of the foregoing R5 groups may be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl.
In an embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (I) as defined above, wherein R 5 is phenyl substituted with from one to three substituent(s) independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 . In a specific embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (I) as defined above, wherein R 5 is phenyl substituted with one substituent independently selected from the group CH 3 ,
CH 2 C¾, OCH 3 , CI, F, and CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (I) as defined above, wherein R 5 is phenyl substituted with two substituents independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (I) as defined above, wherein R 5 is phenyl substituted with three substituents independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 . In a specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with two substituents, wherein the two substituents are CH 3 and OCH 3 .
In another specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with three substituents, wherein the three substituents are CH 3 .
In another specific embodiment of the CRHRl antagonist of the invention, the three substituents of said phenyl are independently selected from CH 3 and CI.
Specifically, R5 is 2-chloro-4-methoxy-5-methyl-phenyl, 2,4,6-trimethyl-phenyl, 2,4,6-trichloro-phenyl, 4-methoxy-2-methyl-phenyl, 2,4-dichloro-phenyl, 4-chloro- 2,6-dimethyl-phenyl, 2,4-dimethyl-phenyl, or 2,4-dimethoxy-phenyl. More specifically R5 is 2,4,6-trimethyl-phenyl or 4-chloro-2,6-dimethyl-phenyl. Even more specifically, R5 is 4-chloro-2,6-dimethyl-phenyl.
In a specific embodiment of the invention, the CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity is a compound of formula (II)
wherein X 2 , X 3 , R l s R 2 und R 5 -Ri 2 are as defined above for formula (I). A further embodiment of the invention relates to a CRHRl antagonist of formula (II) as defined above, wherein X 2 is selected from the group consisting of -NHCHRiR 2 , - In a specific embodiment, X 2 is -NHCHRiR 2 . In another specific embodiment, X 2 is -OCHR 1 R 2 . In a further specific embodiment, X 2 is -NRiR 2 .
If X 2 is -NHCHR 1 R 2 , it is optionally selected from the group consisting of - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 , - NHCH(CH 2 CH 2 OCH 3 ) 2 , -NHCH(CH 3 )(CH 2 CH 3 ) or -NHCHRiR 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl. More specifically, X 2 is -NHCH(CH 2 CH 3 ) 2 . Alternatively, X 2 is -NHCHRiR 2 wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl. Alternatively, X 2 is -NHCH(CH 2 CH 2 OCH 3 ) 2 . Alternatively, X 2 is - NHCH(CH 2 OCH 3 ) 2 . Alternatively, X 2 is -NHCH(CH 3 )(CH 2 CH 3 ). More
specifically, X 2 is
Alternatively, if X 2 is -NRiR 2 , it is optionally selected from the group consisting of - N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , -N(CH 2 CH 2 CH 3 )(CH 2 -cyclopropyl), - N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -N(CH 2 CH 2 OCH 3 ) 2 , or - N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ). Alternatively, X 2 is -N(CH 2 CH 2 OCH 3 ) 2 .
If X 2 is -OCHRiR 2 , it is optionally selected from -OCH(CH 2 CH 3 ) 2 , - OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ), -OCH(CH 2 CH 3 )(CH 2 OCH 3 ). More specifically, X 2 is -OCH(CH 2 CH 3 ) 2 .
Further CRHRl antagonists for use according to the invention encompass
compounds of formula (II) as defined above wherein Ri is Ci-C 6 alkyl. In another embodiment of the invention, Ri of formula (II) is a Ci alkyl. In a further embodiment of the invention, Ri of formula (II) is a C 2 alkyl. In a further
embodiment of the invention, Ri of formula (II) is a C 3 alkyl. In a further embodiment of the invention, Ri of formula (II) is a C 4 alkyl. In a further
embodiment of the invention, Ri of formula (II) is a C 5 alkyl. In a further
embodiment of the invention, Ri of formula (II) is a C 6 alkyl.
Any of the aforementioned Ri groups may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -Cs cycloalkyl, Cl-C 4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O- CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci- C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl). Said Ci-C 6 alkyl and/or the (Ci-C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon-carbon double or triple bond.
Specifically, Ri is Ci-C 6 alkyl substituted with substituent R 7 selected from the group consisting of F, CF 3 , Ci-C 4 alkoxy and C 3 -Cs cycloalkyl. More specifically, Ri is selected from the group consisting of -CH 2 OCH 3 , -CH 2 CH 2 OCH 3 and -CH 2 - cyclopropyl.
In another embodiment of the invention, R 2 of formula (II) is Ci-Ci 2 alkyl. In another embodiment of the invention, R 2 of formula (II) is Ci-Ci 2 alkoxyalkyl. In a further embodiment, R 2 is aryl. In another embodiment, R 2 is -(Ci-C 4 alkylene)aryl. In a further embodiment of the invention, R 2 is a 3- to 8-membered cycloalkyl. In another embodiment of the invention, R 2 is a -(Ci-C 6 alkylene)cycloalkyl.
Optionally, if the R 2 group is aryl or -(Ci-C 4 alkylene)alkyl said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl. More specifically, R 2 is oxadiazolyl.
Optionally, if the R 2 group is a 3- to 8-membered cycloalkyl or a -(Ci-C 6
alkylene)cycloalkyl, one or two of the ring carbons of said cycloalkyl having at least 4 ring members and the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl. Each of the aforementioned R 2 groups may be substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Alternatively, each of the aforementioned R 2 groups may be substituted with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -0-CO-(Ci-C 6 alkyl), -O-CO- N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(d-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and -S0 2 (Ci-C 4 alkyl). Optionally, said Ci-Ci 2 alkyl and/or the C 1 -C 4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may contain one carbon-carbon double or triple bond.
In a specific embodiment of the invention, R 2 is aryl substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Optionally, R 2 is aryl substituted with one substituent selected from chloro, fluoro and C 1 -C 4 alkyl. More specifically, R 2 is oxadiazolyl substituted with one substituent independently selected from chloro, fluoro, C 1 -C 4 alkyl, CF 3 and cyclopropyl. Even more specifically, R 2 is oxadiazolyl substituted with methyl. In another embodiment of the invention, X 2 is -NHCHRiR 2 , wherein Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C1-C4 alkoxy, -0-CO-(d-C 4 alkyl), -0-CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci-C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci-C 4 alkyl), -
COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and the (Ci- C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond and R 2 is oxadiazolyl substituted with methyl.
Optionally, X 2 is -NHCR 1 R 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention, X 2 is -NRiR 2 which forms a 5- to 8- membered ring. In a further embodiment of the invention, X 2 is -CR 1 R 2 R 9 which forms a saturated 5- to 8-membered ring. The ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 optionally contains one or two carbon-carbon double bonds. Alternatively or additionally, one or two of the ring carbons may be replaced by an oxygen, nitrogen or sulfur atom.
In a specific embodiment, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by an oxygen, nitrogen or sulfur atom. Optionally, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom. More specifically, the 5 -membered ring formed by -NR 1 R 2 is a pyrazol-l-yl. Alternatively, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a sulfur atom.
The above described 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 may be substituted with at least one substituent selected from C 1 -C 4 alkyl or with a 4-8 membered ring. In one embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with one substituent selected from Ci- C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR1R2 or -CR1R2R9 is substituted with two substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with three substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8- membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with four substituents independently selected from C 1 -C4 alkyl or a 4-8 membered ring. Said 4-8 membered ring may be saturated or may contain one to three double bonds. Optionally, the 4-8 membered ring is saturated. Additionally, one carbon atom of said 4-8 membered ring may be replaced by CO. Alternatively, one carbon atom of said 4-8 membered ring may be replaced by S0 2 . Alternatively or additionally, one to four carbon atom(s) of the 4-8 membered ring may be replaced by nitrogen.
Optionally, two carbon atoms are replaced by nitrogen. More specifically, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by CO. Alternatively, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by S0 2 . In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 is substituted with Optionally, X 2 is
In an alternative embodiment, the 4-8 membered ring contains one to three double bonds. Optionally, the 4-8 membered ring contains two double bonds. Additionally, one carbon atom of the 4-8 membered ring may be replaced by nitrogen and one carbon atom may be replaced by sulfur. Optionally, the above described ring is a 5- membered ring. In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 R9 is substituted with thiazol.
Optionally, X 2 is a 5-membered ring formed by -NRiR 2 containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom and wherein said 5-membered ring is substituted with thiazol. In a specific embodiment of the invention, the 5-membered ring formed by -NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with at least one C 1 -C 4 alkyl. In another embodiment, the 5- membered ring formed by -NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with two C 1 -C 4 alkyl substituents. In another embodiment, the 5-membered ring formed by -NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom is substituted with three C 1 -C 4 alkyl substituents. Optionally, X 2 is 3,5- dialkylpyrazol-l-yl, such as 3,5-diethylpyrazol-l-yl.
A further embodiment of the invention encompasses CRHRl antagonists of formula (II) as defined above, wherein X 3 is NH, O, NCH 3 , or N, whereby if X 3 is N, X 3 and R 4 form a 5-membered ring substituted at X 3 with R5. Specifically, X 3 of formula (II) as defined above is N and X 3 and R 4 form a 5-membered ring substituted at X 3 with R5. More specifically, X 3 of formula (II) as defined above is N and X 3 and R 4 form a 5-membered ring substituted at X 3 with R5, wherein X 3 and R 4 form a group - N-CH 2 CH 2 -. Alternatively, X 3 is O or NH, more specifically X 3 is O.
In another embodiment of the invention, the CRHRl antagonist is a compound of formula (II) as defined above, wherein R 5 is phenyl substituted with from one to three substituents independently selected from fluoro, chloro, C i-C 6 alkyl and Ci-C 6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C 6 alkyl)0(Ci-C 6 )alkyl, -NHCH 3 , -N(CH 3 ) 2 , - COOH, -COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), -S0 2 NH(Ci-C 4 alkyl), -S0 2 N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S0 2 NH 2 , -NHS0 2 (Ci-C 4 alkyl), -S(d-C 6 alkyl) and S0 2 (Ci-C 6 alkyl). The C 1 -C4 alkyl and the Ci-C 6 alkyl moieties of the foregoing R5 groups may be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl. In an embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (II) as defined above, wherein R 5 is phenyl substituted with from one to three substituent(s) independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, CF 3 . In a specific embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (II) as defined above, wherein R 5 is phenyl substituted with one substituent independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (II) as defined above, wherein R 5 is phenyl substituted with two substituents independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (II) as defined above, wherein R 5 is phenyl substituted with three substituents independently selected from the group CH 3 , CH2CH3, OCH3, CI, F, CF 3 .
In a specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with two substituents, wherein the two substituents are CH 3 and OCH 3 . In another specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with three substituents, wherein the three substituents are CH 3 .
In another specific embodiment of the CRHRl antagonist of the invention, the three substituents of said phenyl are independently selected from CH 3 and CI.
Specifically, R5 is 2-chloro-4-methoxy-5-methyl-phenyl, 2,4,6-trimethyl-phenyl, 2,4,6-trichloro-phenyl, 4-methoxy-2-methyl-phenyl, 2,4-dichloro-phenyl, 4-chloro- 2,6-dimethyl-phenyl, 2,4-dimethyl-phenyl, or 2,4-dimethoxy-phenyl. More specifically R5 is 2,4,6-trimethyl-phenyl or 4-chloro-2,6-dimethyl-phenyl. Even more specifically, R5 is 4-chloro-2,6-dimethyl-phenyl.
In another specific embodiment of the invention the CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity is a compound of formula (III) wherein X 2 , Ri, R 2 und R5-R10 are as defined for formulas (I) and (II) above.
A further embodiment of the invention relates to a CRHRl antagonist of formula (III) as defined above, wherein X 2 is selected from the group consisting of - NHCHR1R2, -OCHR1R2 or -NR1R2.
In a specific embodiment, X 2 is -NHCHR 1 R 2 . In another specific embodiment, X 2 is -OCHR 1 R 2 . In a further specific embodiment, X 2 is -NR 1 R 2 .
If X 2 is -NHCHR 1 R 2 , it is optionally selected from the group consisting of - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 , - NHCH(CH 2 CH 2 OCH 3 ) 2 , -NHCH(CH 3 )(CH 2 CH 3 ) or -NHCHR 1 R 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl. More specifically, X 2 is -NHCH(CH 2 CH 3 ) 2 . Alternatively, X 2 is -NHCHR 1 R 2 wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl. Alternatively, X 2 is -NHCH(CH 2 CH 2 OCH 3 ) 2 . Alternatively, X 2 is - NHCH(CH 2 OCH 3 ) 2 . Alternatively, X 2 is -NHCH(CH 3 )(CH 2 CH 3 ). More specifically, X 2 is
Alternatively, if X 2 is -NR 1 R 2 , it is optionally selected from the group consisting of - N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , -N(CH 2 CH 2 CH 3 )(CH 2 -cyclopropyl), - N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -N(CH 2 CH 2 OCH 3 ) 2 , or - N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ). More specifically, X 2 is -N(CH 2 OCH 3 ) 2 .
Alternatively, X 2 is -N(CH 2 CH 2 OCH 3 ) 2 . If X 2 is -OCHR1R2, it is optionally selected from -OCH(CH 2 CH 3 ) 2 , - OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ), or - OCH(CH 2 CH 3 )(CH 2 OCH 3 ). More specifically, X 2 is -OCH(CH 2 CH 3 ) 2 . Further CRHR1 antagonists for use according to the invention may encompass compounds of formula (III) as defined above wherein Ri is Ci-C 6 alkyl.
In another embodiment of the invention, Ri of formula (III) is a Ci alkyl. In a further embodiment of the invention, Ri of formula (III) is a C 2 alkyl. In a further embodiment of the invention, Ri of formula (III) is a C 3 alkyl. In a further embodiment of the invention, Ri of formula (III) is a C 4 alkyl. In a further embodiment of the invention, Ri of formula (III) is a C 5 alkyl. In a further embodiment of the invention, Ri of formula (III) is a C 6 alkyl. Any of the aforementioned Ri groups may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -Cs cycloalkyl, C 1 -C 4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O- CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci- C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl). Said Ci-C 6 alkyl and the (C 1 -C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond. Specifically, Ri is Ci-C 6 alkyl substituted with substituent R 7 selected from the group consisting of F, CF 3 , C 1 -C 4 alkoxy and C 3 -Cs cycloalkyl. More specifically, Ri is selected from the group consisting of -CH 2 OCH 3 , -CH 2 CH 2 OCH 3 and -CH 2 - cyclopropyl. In another embodiment of the invention, R 2 of formula (III) is Ci-Ci 2 alkyl. In another embodiment of the invention, R 2 of formula (III) is Ci-Ci 2 alkoxyalkyl. In a further embodiment, R 2 is aryl. In another embodiment, R 2 is -(C 1 -C 4 alkylene)aryl. In a further embodiment of the invention, R 2 is a 3- to 8-membered cycloalkyl. In another embodiment of the invention, R 2 is a -(Ci-C 6 alkylene)cycloalkyl.
Optionally, if the R 2 group is aryl or -(d-C 4 alkylene)alkyl, said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl. More specifically, R 2 is oxadiazolyl. Optionally, if the R 2 group is a 3- to 8-membered cycloalkyl or a -(Ci-C 6
alkylene)cycloalkyl, one or two of the ring carbons of said cycloalkyl having at least 4 ring members and the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl.
Each of the aforementioned R 2 groups may be substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Alternatively, each of the aforementioned R 2 groups may be substituted with one substituent selected from bromo, iodo, d-C 6 alkoxy, -0-CO-(Ci-C 6 alkyl), -O-CO- N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(Ci-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and
-S0 2 (Ci-C 4 alkyl). Optionally, said Ci-Ci 2 alkyl and/or the C 1 -C 4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may contain one carbon-carbon double or triple bond.
In a specific embodiment of the invention, R 2 is aryl substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Optionally, R 2 is aryl substituted with one substituent selected from chloro, fluoro and C 1 -C 4 alkyl. More specifically, R 2 is oxadiazolyl substituted with one substituent independently selected from chloro, fluoro, C 1 -C 4 alkyl, CF 3 and cyclopropyl. Even more specifically, R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention, X 2 is -NHCHRiR 2 , wherein Ri is d-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C 1 -C4 alkoxy, -0-CO-(d-C 4 alkyl), -0-CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci-C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci-C 4 alkyl), - COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and the (Ci- C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond and R 2 is oxadiazolyl substituted with methyl.
Optionally, X 2 is -NHCRiR 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention, X 2 is -NRiR 2 which forms a 5- to 8- membered ring. In a further embodiment of the invention, X 2 is -CRiR 2 R 9 which forms a saturated 5- to 8-membered ring. The ring formed by -NRiR 2 or -CRiR 2 R 9 optionally contains one or two carbon-carbon double bonds. Alternatively or additionally, one or two of the ring carbons may be replaced by an oxygen, nitrogen or sulfur atom.
In a specific embodiment, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the rings carbons is replaced by an oxygen, nitrogen or sulfur atom. Optionally, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom. More specifically, the 5-membered ring formed by -NRiR 2 is a pyrazol-l-yl. Alternatively, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the rings carbons is replaced by a sulfur atom.
The above described 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 R 9 may be substituted with at least one substituent selected from C 1 -C 4 alkyl or with a 4-8 membered ring.
In one embodiment of the invention, the 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 Rg is substituted with one substituent selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NRiR 2 or -CR 1 R 2 R 9 is substituted with two substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with three substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by - NRiR 2 or -CR 1 R 2 R 9 is substituted with four substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring.
Said 4-8 membered ring may be saturated or may contain one to three double bonds. Optionally, the 4-8 membered ring is saturated. Additionally, one carbon atom of said 4-8 membered ring may be replaced by CO. Alternatively, one carbon atom of said 4-8 membered ring may be replaced by S0 2 . Alternatively or additionally, one to four carbon atom(s) of the 4-8 membered ring may be replaced by nitrogen.
Optionally, two carbon atoms are replaced by nitrogen. More specifically, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by CO. Alternatively, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by S0 2 . In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NR 1 R 2 is substituted with
Optionally, X 2 is
In an alternative embodiment, the 4-8 membered ring contains one to three double bonds. Optionally, the 4-8 membered ring contains two double bonds. Additionally, one carbon atom of the 4-8 membered ring may be replaced by nitrogen and one carbon atom may be replaced by sulfur. Optionally, the above described ring is a 5- membered ring. In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 or -CR1R2R9 is substituted with thiazol. Optionally, X 2 is a 5-membered ring formed by -NR1R2 containing two double bonds, wherein one of the ring carbons is replaced by a nitrogen atom and wherein said 5-membered ring is substituted with thiazol.
In a specific embodiment of the invention, the 5-membered ring formed by -NR1R2, containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with at least one C1-C4 alkyl. In another embodiment, the 5- membered ring formed by -NR1R2, containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with two C 1-C4 alkyl substituents. In another embodiment, the 5-membered ring formed by -NR1R2, containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with three C1-C4 alkyl substituents. Optionally, X 2 is 3,5- dialkylpyrazol-l-yl, such as 3,5-diethylpyrazol-l -yl.
In another embodiment of the invention, the CRHR1 antagonist is a compound of formula (III) as defined above, wherein R 5 is phenyl substituted with from one to three substituents independently selected from fluoro, chloro, C i-C 6 alkyl and Ci-C 6 alkoxy, or with one substituent selected from hydroxy, iodo, bromo, formyl, cyano, nitro, trifluoromethyl, amino, (Ci-C 6 alkyl)0(Ci-C 6 )alkyl, -NHCH3, -N(CH 3 ) 2 , - COOH, -COO(Ci-C 4 alkyl), -CO(Ci-C 4 alkyl), -S0 2 NH(Ci-C 4 alkyl), -S0 2 N(d-C 4 alkyl)(Ci-C 2 alkyl), -S0 2 NH 2 , -NHS0 2 (d-C 4 alkyl), -S(Ci-C 6 alkyl) and S0 2 (Ci-C 6 alkyl). The C1-C4 alkyl and the Ci-C 6 alkyl moieties of the foregoing R5 groups may be substituted with one or two fluoro groups or with one substituent selected from hydroxy, amino, methylamino, dimethylamino and acetyl.
In an embodiment of the invention, the CRHR1 antagonist encompasses a compound of formula (III) as defined above, wherein R 5 is phenyl substituted with from one to three substituent(s) independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 . In a specific embodiment of the invention, the CRHR1 antagonist encompasses a compound of formula (III) as defined above, wherein R 5 is phenyl substituted with one substituent independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (III) as defined above, wherein R 5 is phenyl substituted with two substituents independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 . In another embodiment of the invention, the CRHRl antagonist encompasses a compound of formula (III) as defined above, wherein R 5 is phenyl substituted with three substituents independently selected from the group CH 3 , CH 2 CH 3 , OCH 3 , CI, F, and CF 3 .
In a specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with two substituents, wherein the two substituents are CH 3 and OCH 3 .
In another specific embodiment of the CRHRl antagonist of the invention, R5 is phenyl substituted with three substituents, wherein the three substituents are CH 3 .
In another specific embodiment of the CRHRl antagonist of the invention, the three substituents of said phenyl are independently selected from CH 3 and CI. Specifically, R5 is 2-chloro-4-methoxy-5-methyl-phenyl, 2,4,6-trimethyl-phenyl, 2,4,6-trichloro-phenyl, 4-methoxy-2-methyl-phenyl, 2,4-dichloro-phenyl, 4-chloro- 2,6-dimethyl-phenyl, 2,4-dimethyl-phenyl or, 2,4-dimethoxy-phenyl. More specifically, R5 is 2,4,6-trimethyl-phenyl or 4-chloro-2,6-dimethyl-phenyl. Even more specifically, R5 is 4-chloro-2,6-dimethyl-phenyl.
Another specific embodiment of the invention relates to a CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity, wherein the CRHRl antagonist is a compound of formula (IV) wherein X 2 , Ri , R 2 , R7, Rs, R and Rio are as defined above for formulas (I) to (III). A further embodiment of the invention relates to a CRHRl antagonist of formula (IV) as defined above, wherein X 2 is selected from the group consisting of - NHCHR1R2, -OCHR1R2 or -NR1R2.
In a specific embodiment, X2 is -NHCHR1R2. In another specific embodiment, X2 is -OCHR1R2. In a further specific embodiment, X2 is -NR1R2.
If X2 is -NHCHR1R2, it is optionally selected from the group consisting of - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 ,
NHCH(CH 2 CH 2 OCH 3 ) 2 , -NHCH(CH) 3 (CH 2 CH 3 ) or -NHCHR1R2, wherein Ri is ethyl and R2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl. More specifically, X2 is -NHCH(CH2CH 3 )2. Alternatively, X2 is -NHCHR1R2 wherein Ri is ethyl and R2 is oxadiazolyl substituted with methyl. Alternatively, X 2 is -NHCH(CH 2 CH 2 OCH 3 ) 2 . Alternatively, X 2 is
-NHCH(CH 2 OCH 3 ) 2 . Alternatively, X 2 is -NHCH(CH 3 )(CH 2 CH 3 ). More specifically, X 2 is
Alternatively, if X2 is -NR1R2, it is optionally selected from the group consisting of - N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , -N(CH 2 CH 2 CH 3 )(CH2-cyclopropyl), - N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -N(CH 2 CH 2 OCH 3 ) 2 , or - N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ). Alternatively, X 2 is -N(CH 2 CH 2 OCH 3 ) 2 .
If X 2 is -OCHRiR 2 , it is optionally selected from -OCH(CH 2 CH 3 ) 2 , - OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ) or -OCH(CH 2 CH 3 )(CH 2 OCH 3 ). More specifically, X 2 is -OCH(CH 2 CH 3 ) 2 .
Further CRHR1 antagonists for use according to the invention encompass
compounds of formula (IV) as defined above wherein Ri is Ci-C 6 alkyl.
In another embodiment of the invention, Ri of formula (IV) is a Ci alkyl. In a further embodiment of the invention, Ri of formula (IV) is a C 2 alkyl. In a further embodiment of the invention, Ri of formula (IV) is a C 3 alkyl. In a further embodiment of the invention, Ri of formula (IV) is a C 4 alkyl. In a further embodiment of the invention, Ri of formula (IV) is a C 5 alkyl. In a further embodiment of the invention, Ri of formula (IV) is a C 6 alkyl.
Any of the aforementioned Ri groups may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -Cs cycloalkyl, Ci-C 4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O- CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci- C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl). Said Ci-C 6 alkyl and the (Ci-C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond.
Specifically, Ri is Ci-C 6 alkyl substituted with substituent R 7 selected from the group consisting of F, CF 3 , C 1 -C4 alkoxy and C 3 -Cs cycloalkyl. More specifically, Ri is selected from the group consisting of -CH 2 OCH 3 , -CH 2 CH 2 OCH 3 and -CH 2 - cyclopropyl. In another embodiment of the invention, R 2 of formula (IV) is C 1 -C 12 alkyl. In another embodiment of the invention, R 2 of formula (IV) is C 1 -C 12 alkoxyalkyl. In a further embodiment, R 2 is aryl. In another embodiment, R 2 is -(C 1 -C 4 alkylene)aryl. In a further embodiment of the invention, R 2 is a 3- to 8-membered cycloalkyl. In another embodiment of the invention, R 2 is a -(Ci-C 6 alkylene)cycloalkyl.
Optionally, if the R 2 group is aryl or -(C 1 -C 4 alkylene)alkyl said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl. More specifically, R 2 is oxadiazolyl.
Optionally, if the R 2 group is a 3- to 8-membered cycloalkyl or a -(Ci-C 6
alkylene)cycloalkyl, one or two of the ring carbons of said cycloalkyl having at least 4 ring members and/or the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl.
Each of the aforementioned R 2 groups may be substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Alternatively, each of the aforementioned R 2 groups may be substituted with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -0-CO-(Ci-C 6 alkyl), -O-CO- N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(d-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and -S0 2 (Ci-C 4 alkyl). Optionally, said Ci-Ci 2 alkyl and/or the C 1 -C 4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may contain one carbon-carbon double or triple bond.
In a specific embodiment of the invention, R 2 is aryl substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Optionally, R 2 is aryl substituted with one substituent selected from chloro, fluoro and C 1 -C 4 alkyl. More specifically, R 2 is oxadiazolyl substituted with one substituent independently selected from chloro, fluoro, C 1 -C 4 alkyl, CF 3 and cyclopropyl. Even more specifically, R 2 is oxadiazolyl substituted with methyl. In another embodiment of the invention, X 2 is -NHCHRiR 2 , wherein Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C 1 -C4 alkoxy, -0-CO-(Ci-C 4 alkyl), -0-CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci-C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci-C 4 alkyl), - COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and/or the (Ci-C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond and R 2 is oxadiazolyl substituted with methyl.
Optionally, X 2 is -NHCRiR 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl. In another embodiment of the invention, X 2 is -NRiR 2 which forms a 5- to 8- membered ring. In a further embodiment of the invention, X 2 is -CRiR 2 R 9 which forms a saturated 5- to 8-membered ring. The ring formed by -NRiR 2 or -CRiR 2 R 9 optionally contains one or two carbon-carbon double bonds. Alternatively or additionally, one or two of the ring carbons may be replaced by an oxygen, nitrogen or sulfur atom.
In a specific embodiment, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the rings carbons is replaced by an oxygen, nitrogen or sulfur atom. Optionally, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom. More specifically, the 5-membered ring formed by -NRiR 2 is a pyrazol-l-yl. Alternatively, -NRiR 2 forms a 5-membered ring containing two double bonds, wherein one of the ring carbons is replaced by a sulfur atom.
The above described 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 R 9 may be substituted with at least one substituent selected from C 1 -C4 alkyl or with a 4-8 membered ring. In one embodiment of the invention, the 5- to 8-membered ring formed by -NR R 2 or -CR 1 R 2 R 9 is substituted with one substituent selected from Ci- C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR1R2 or -CR1R2R9 is substituted with two substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with three substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8- membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with four substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring.
Said 4-8 membered ring may be saturated or may contain one to three double bonds. Optionally, the 4-8 membered ring is saturated. Additionally, one carbon atom of said 4-8 membered ring may be replaced by CO. Alternatively, one carbon atom of said 4-8 membered ring may be replaced by SO 2 . Alternatively or additionally, one to four carbon atom(s) of the 4-8 membered ring may be replaced by nitrogen.
Optionally, two carbon atoms are replaced by nitrogen. More specifically, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by CO. Alternatively, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by SO 2 . In a specific embodiment of the invention the above described 5- to 8-membered ring formed by - NR 1 R 2 is substituted with
Optionally, X 2 is
In an alternative embodiment, the 4-8 membered ring contains one to three double bonds. Optionally, the 4-8 membered ring contains two double bonds. Additionally, one carbon atom of the 4-8 membered ring may be replaced by nitrogen and one carbon atom may be replaced by sulfur. Optionally, the above described ring is a 5-membered ring. In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 or -CR 1 R 2 R 9 is substituted with thiazol. Optionally, X 2 is a 5-membered ring formed by -NR 1 R 2 containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom and wherein said 5-membered ring is substituted with thiazol.
In a specific embodiment of the invention, the 5-membered ring formed by - NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with at least one C 1 -C 4 alkyl. In another embodiment, the 5-membered ring formed by -NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom, is substituted with two C 1 -C 4 alkyl substituents. In another embodiment, the 5-membered ring formed by - NR 1 R 2 , containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom is substituted with three C 1 -C 4 alkyl substituents. Optionally, X 2 is 3,5-dialkylpyrazol-l-yl, such as 3,5-diethylpyrazol-l-yl.
In another specific embodiment of the invention, the CRHR1 antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity is a compound of formula (V)
or a pharmaceutically acceptable salt thereof, wherein X 2 , Ri, R 2 , R7, Rs, R and Rio are as defined for formulas (I) -(IV) above. A further embodiment of the invention relates to a CRHRl antagonist of formula (V) as defined above, wherein X 2 is selected from the group consisting of -NHCHRiR 2 , - In a specific embodiment, X 2 is -NHCHRiR 2 . In another specific embodiment, X 2 is -OCHR 1 R 2 . In a further specific embodiment, X 2 is -NRiR 2 .
If X 2 is -NHCHR 1 R 2 , it is optionally selected from the group consisting of - NHCH(CH 2 OCH 3 ) 2 , -NHCH(CH 2 OCH 3 )(CH 2 CH 3 ), -NHCH(CH 2 CH 3 ) 2 ,
NHCH(CH 2 CH 2 OCH 3 ) 2 , -NHCH(CH 3 )(CH 2 CH 3 ) or -NHCHRiR 2 wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl, isopropyl, cyclopropyl, trifluoromethyl, or ethyl. More specifically, X 2 is -NHCH(CH 2 CH 3 ) 2 . Alternatively, X 2 is -NHCHRiR 2 wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl. Alternatively, X 2 is -NHCH(CH 2 CH 2 OCH 3 ) 2 . Alternatively, X 2 is
-NHCH(CH 2 OCH 3 ) 2 . Alternatively, X 2 is -NHCH(CH 3 )(CH 2 CH 3 ). More specifically, X 2 is
Alternatively, if X 2 is -NRiR 2 , it is optionally selected from the group consisting of - N(CH 2 CH 3 )(CH 3 ), -N(CH 2 CH 2 CH 3 ) 2 , -N(CH 2 CH 2 CH 3 )(CH 2 -cyclopropyl), - N(CH 2 CH 3 )(CH 2 CH 2 CH 2 CH 3 ), -N(CH 2 CH 2 OCH 3 ) 2 , or - N(CH 2 CH 2 OCH 3 )(CH 2 CH 2 CH 3 ). Alternatively, X 2 is -N(CH 2 CH 2 OCH 3 ) 2 .
If X 2 is -OCHRiR 2 , it is optionally selected from -OCH(CH 2 CH 3 ) 2 , - OCH(CH 2 CH 3 )CH 3 , -OCH(CH 2 CH 3 )(CH 2 CH 2 CH 3 ) or -OCH(CH 2 CH 3 )(CH 2 OCH 3 ). More specifically, X 2 is -OCH(CH 2 CH 3 ) 2 .
Further CRHRl antagonists for use according to the invention encompass
compounds of formula (V) as defined above wherein Ri is Ci-C 6 alkyl. In another embodiment of the invention, Ri of formula (V) is a C i alkyl. In a further embodiment of the invention, Ri of formula (V) is a C 2 alkyl. In a further embodiment of the invention, Ri of formula (V) is a C 3 alkyl. In a further embodiment of the invention, Ri of formula (V) is a C 4 alkyl. In a further embodiment of the invention, Ri of formula (V) is a C 5 alkyl. In a further embodiment of the invention, Ri of formula (V) is a C 6 alkyl.
Any of the aforementioned Ri groups may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -Cs cycloalkyl, Ci-C 4 alkoxy, -0-CO-(Ci-C 4 alkyl), -O- CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci- C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci- C 4 alkyl), -COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl). Said Ci-C 6 alkyl and the (Ci-C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond.
Specifically, Ri is Ci-C 6 alkyl substituted with substituent R 7 selected from the group consisting of F, CF 3 , C1-C4 alkoxy and C 3 -Cs cycloalkyl. More specifically, Ri is selected from the group consisting of -CH 2 OCH 3 , -CH 2 CH 2 OCH 3 and -CH 2 - cyclopropyl.
In another embodiment of the invention, R 2 of formula (V) is C i-Ci 2 alkyl. In another embodiment of the invention, R 2 of formula (V) is Ci-Ci 2 alkoxyalkyl. In a further embodiment, R 2 is aryl. In another embodiment, R 2 is -(C1-C4 alkylene)aryl. In a further embodiment of the invention, R 2 is a 3- to 8-membered cycloalkyl. In another embodiment of the invention, R 2 is a -(Ci-C 6 alkylene)cycloalkyl.
Optionally, if the R 2 group is aryl or -(C1-C4 alkylene)alkyl, said aryl is phenyl, naphthyl, thienyl, benzothienyl, pyridyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, oxadiazolyl or benzoxazolyl. More specifically, R 2 is oxadiazolyl.
Optionally, if the R 2 group is a 3- to 8-membered cycloalkyl or a -(Ci-C 6
alkylene)cycloalkyl, one or two of the ring carbons of said cycloalkyl having at least 4 ring members and/or the cycloalkyl moiety of said -(Ci-C 6 alkylene)cycloalkyl having at least 4 ring members may be replaced by an oxygen or sulfur atom or by N-Rs wherein R 8 is hydrogen or C 1 -C 4 alkyl. Each of the aforementioned R 2 groups may be substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Alternatively each of the aforementioned R 2 groups may be substituted with one substituent selected from bromo, iodo, Ci-C 6 alkoxy, -0-CO-(Ci-C 6 alkyl), -O-CO- N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -S(d-C 6 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl), and -S0 2 (Ci-C 4 alkyl). Optionally, said Ci-Ci 2 alkyl and/or the C 1 -C 4 alkylene moiety of said -(C 1 -C 4 alkylene)aryl may contain one carbon-carbon double or triple bond.
In a specific embodiment of the invention, R 2 is aryl substituted with from one to three substituents independently selected from chloro, fluoro and C 1 -C 4 alkyl.
Optionally, R 2 is aryl substituted with one substituent selected from chloro, fluoro and C 1 -C 4 alkyl. More specifically, R 2 is oxadiazolyl substituted with one substituent independently selected from chloro, fluoro, C 1 -C 4 alkyl, CF 3 and cyclopropyl. Even more specifically, R 2 is oxadiazolyl substituted with methyl. In another embodiment of the invention, X 2 is -NHCHRiR 2 , wherein Ri is Ci-C 6 alkyl which may optionally be substituted with one or two substituents R 7 independently selected from the group consisting of hydroxy, fluoro, chloro, bromo, iodo, CF 3 , C 3 -C 8 cycloalkyl, C1-C4 alkoxy, -0-CO-(d-C 4 alkyl), -0-CO-NH(Ci-C 4 alkyl), -0-CO-N(Ci-C 4 alkyl)(Ci-C 2 alkyl), -NH(Ci-C 4 alkyl), -N(Ci-C 2 alkyl)(Ci-C 4 alkyl), -S(Ci-C 4 alkyl), -N(Ci-C 4 alkyl)CO(Ci-C 4 alkyl), -NHCO(Ci-C 4 alkyl), -
COO(Ci-C 4 alkyl), -CONH(Ci-C 4 alkyl), -CON(Ci-C 4 alkyl)(Ci-C 2 alkyl), CN, N0 2 , -SO(Ci-C 4 alkyl) and -S0 2 (Ci-C 4 alkyl), and wherein said Ci-C 6 alkyl and/or the (C 1 -C 4 ) alkyl moieties in the foregoing R 7 groups may optionally contain one carbon- carbon double or triple bond and R 2 is oxadiazolyl substituted with methyl.
Optionally, X 2 is -NHCHR 1 R 2 , wherein Ri is ethyl and R 2 is oxadiazolyl substituted with methyl.
In another embodiment of the invention, X 2 is -NR 1 R 2 which forms a 5- to 8- membered ring. In a further embodiment of the invention, X 2 is -CR 1 R 2 R 9 which forms a saturated 5- to 8-membered ring. The ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 optionally contains one or two carbon-carbon double bonds. Alternatively or additionally, one or two of the ring carbons may be replaced by an oxygen, nitrogen or sulfur atom.
In a specific embodiment, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by an oxygen, nitrogen or sulfur atom. Optionally, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom. More specifically, the 5 -membered ring formed by -NR 1 R 2 is a pyrazol-l-yl. Alternatively, -NR 1 R 2 forms a 5 -membered ring containing two double bonds, wherein one of the rings carbons is replaced by a sulfur atom.
The above described 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 may be substituted with at least one substituent selected from C 1 -C 4 alkyl or with a 4-8 membered ring. In one embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with one substituent selected from Ci- C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR1R2 or -CR1R2R9 is substituted with two
substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8-membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with three substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. In another embodiment of the invention, the 5- to 8- membered ring formed by -NR 1 R 2 or -CR 1 R 2 R 9 is substituted with four substituents independently selected from C 1 -C 4 alkyl or a 4-8 membered ring. Said 4-8 membered ring may be saturated or may contain one to three double bonds. Optionally, the 4-8 membered ring is saturated. Additionally, one carbon atom of said 4-8 membered ring may be replaced by CO. Alternatively, one carbon atom of said 4-8 membered ring may be replaced by S0 2 . Alternatively or additionally, one to four carbon atom(s) of the 4-8 membered ring may be replaced by nitrogen.
Optionally, two carbon atoms are replaced by nitrogen. More specifically, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by CO. Alternatively, two carbon atoms of the 4-8 membered ring are replaced by nitrogen and one carbon atom is replaced by S0 2 . In a specific embodiment of the invention the above described 5- to 8-membered ring formed by - NRiR 2 is substituted with Optionally, X 2 is
In an alternative embodiment, the 4-8 membered ring contains one to three double bonds. Optionally, the 4-8 membered ring contains two double bonds. Additionally, one carbon atom of the 4-8 membered ring may be replaced by nitrogen and one carbon atom may be replaced by sulfur. Optionally, the above described ring is a 5 membered ring. In a specific embodiment of the invention, the above described 5- to 8-membered ring formed by -NRiR 2 or -CRiR 2 R9 is substituted with thiazol.
Optionally, X 2 is a 5-membered ring formed by -NRiR 2 containing two double bonds, wherein one of the rings carbons is replaced by a nitrogen atom and wherein said 5-membered ring is substituted with thiazol. In a specific embodiment of the invention, the 5-membered ring formed by -NR1R2 containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom is substituted with at least one C 1-C4 alkyl. In another embodiment, the 5- membered ring formed by -NR1R2 containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom is substituted with two C 1-C4 alkyl substituents. In another embodiment, the 5-membered ring formed by -NR1R2 containing two double bonds and wherein one carbon atom is replaced by a nitrogen atom is substituted with three C1-C4 alkyl substituents. Optionally, X 2 is 3,5- Dialkylpyrazol-l-yl, more specifically 3,5-Diethylpyrazol-l-yl.
In another specific embodiment of the invention the CRHRl antagonist for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity is a compound of formula (VI)
or a pharmaceutically acceptable salt thereof, wherein
X 4 is O or NH. In another embodiment of the invention, the CRHRl antagonist is selected from the group consisting of CP 154,526, Antalarmin, CRA 5626, Emicerfont, DMP-696, DMP-904, DMP-695, SC-241, BMS-561388, Pexacerfont, R121919, NBI30545, PD-171729, Verucerfont, NBI34041, NBI35965, SN003, CRA0450, SSR125543A, CP-316,311, CP-376,395, NBI-27914, ONO-2333Ms, NBI-34101, PF-572778, GSK561579 and GSK586529. In a particular embodiment of the invention, the CRHRl antagonist is DMP-696.
In a particular embodiment of the invention, the CRHRl antagonist is CP-316,311.
In a particular embodiment of the invention, the CRHRl antagonist is SSR125543A
The corresponding structural formulas of some of the above-mentioned CRHRl antagonists for use in the present invention are set out in Table 1 below:
Table 1
ONO-2333Ms, NBI 34101, PF-572778, GSK561579 and GSK586529 are described by Zorilla and Koob (Drug Discovery Today, 2010, 371-383) as corticotropin releasing factor receptor antagonists (corticotropin releasing factor is a synonym for CRHRl antagonists) tested in clinical trials.
In another aspect of the invention, the above-described CRHRl antagonists are for use in the treatment of depressive symptoms and/or anxiety symptoms in patients having CRH overactivity, wherein CRH overactivity is detected by determining the status of a marker indicative for CRH overactivity.
In one embodiment, the marker indicative for CRH overactivity is selected from the group consisting of a bio marker, a set of bio markers and a clinical marker. The one or more biomarkers may be obtained by a genome -wide screening for single nucleotide polymorphisms in patients with depressive and/or anxiety symptoms. For example, the bio marker or set of biomarkers constituting a marker for CRH activity may be selected from one or more biomarkers of the group comprising:
• SNP rs6437726,
• SNP rsl986684,
• SNP rs7380830,
• SNP rs3903768,
• SNP rs7325978,
• SNP rsl3585,
• SNP rs9368373,
• SNP rsl0935354,
• SNP rs8095703,
• SNP rs 10206851,
• SNP rs9542977,
• SNP rs4942879,
• SNP rs9542954,
• SNP rsl593478,
• SNP rs9542951,
• SNP rs2188534,
• SNP rs 12524124,
• SNP rs4352629,
• SNP rs7448716,
• SNP rsl 1873533,
• SNP rsl0062658,
• SNP rsl 2547917,
• SNP rsl038268,
• SNP rs2375811,
• SNP rsl352671,
• SNP rs364331,
• SNP rsl 924949, • SNP rsl 1025990,
• SNP rs3758562,
• SNP rsl0156056.
In particular, the biomarker or set of biomarkers constituting a marker for CRH activity may be selected from one or more biomarkers of the group comprising:
• SNP rs6437726 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 1, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs 1986684 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 2, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7380830 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 3, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs3903768 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 4, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7325978 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 5, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rsl3585 which is represented by a single polymorphic change at position 185 of SEQ ID NO: 6, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs9368373 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 7, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs 10935354 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 8, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs8095703 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 9, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs 10206851 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 10, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542977 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 11, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs4942879 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 12, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs9542954 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 13, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl593478 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 14, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542951 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 15, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs2188534 which is represented by a single polymorphic change at position 200 of SEQ ID NO: 16, wherein in one or two alleles the wild-type nucleotide G is replaced by indicator nucleotide T,
SNP rs 12524124 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 17, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs4352629 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 18, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs7448716 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 19, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1873533 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 20, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl 0062658 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 21, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 2547917 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 22, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl 038268 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 23, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs2375811 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 24, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl352671 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 25, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rs364331 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 26, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl 924949 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 27, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1025990 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 28, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, • SNP rs3758562 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 29, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rsl 0156056 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 30, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide G.
In a specific embodiment, the set of biomarkers comprises at least 15, at least 20, at least 25 or all of the following biomarkers:
• SNP rs6437726,
• SNP rsl986684,
• SNP rs7380830,
• SNP rs3903768,
• SNP rs7325978,
• SNP rsl3585,
• SNP rs9368373,
• SNP rsl0935354,
• SNP rs8095703,
• SNP rsl 0206851,
• SNP rs9542977,
• SNP rs4942879,
• SNP rs9542954,
• SNP rsl593478,
• SNP rs9542951,
• SNP rs2188534,
• SNP rsl 2524124,
• SNP rs4352629,
• SNP rs7448716,
• SNP rsl 1873533,
• SNP rsl0062658, • SNP rs 12547917,
• SNP rsl038268,
• SNP rs2375811,
• SNP rsl352671,
• SNP rs364331,
• SNP rs 1924949,
• SNP rsl 1025990,
• SNP rs3758562,
• SNP rsl0156056.
another specific embodiment, the set of bio markers comprises at least 15, at least, at least 25 or all of the following biomarkers:
• SNP rs6437726 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 1, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs 1986684 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 2, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7380830 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 3, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs3903768 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 4, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7325978 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 5, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rsl3585 which is represented by a single polymorphic change at position 185 of SEQ ID NO: 6, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs9368373 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 7, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl0935354 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 8, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs8095703 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 9, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs 10206851 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 10, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542977 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 11, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs4942879 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 12, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs9542954 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 13, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl593478 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 14, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542951 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 15, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs2188534 which is represented by a single polymorphic change at position 200 of SEQ ID NO: 16, wherein in one or two alleles the wild-type nucleotide G is replaced by indicator nucleotide T, SNP rs 12524124 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 17, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs4352629 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 18, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs7448716 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 19, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1873533 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 20, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl 0062658 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 21, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 2547917 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 22, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl 038268 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 23, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs2375811 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 24, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl352671 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 25, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rs364331 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 26, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, SNP rs 1924949 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 27, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1025990 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 28, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs3758562 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 29, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 0156056 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 30, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide G. ample, the set of bio markers consists of the following bio markers:
• SNP rs6437726,
• SNP rsl986684,
• SNP rs7380830,
• SNP rs3903768,
• SNP rs7325978,
• SNP rsl3585,
• SNP rs9368373,
• SNP rsl0935354,
• SNP rs8095703,
• SNP rsl 0206851,
• SNP rs9542977,
• SNP rs4942879,
• SNP rs9542954,
• SNP rsl593478,
• SNP rs9542951,
• SNP rs2188534, • SNP rs 12524124,
• SNP rs4352629,
• SNP rs7448716,
• SNP rsl 1873533,
· SNP rsl0062658,
• SNP rsl 2547917,
• SNP rsl038268,
• SNP rs2375811,
• SNP rsl352671,
· SNP rs364331,
• SNP rsl 924949,
• SNP rsl 1025990,
• SNP rs3758562,
• SNP rsl0156056. nother example, the set of bio markers consists of the following bio markers:
• SNP rs6437726 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 1, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
· SNP rsl 986684 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 2, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7380830 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 3, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs3903768 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 4, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7325978 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 5, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rsl3585 which is represented by a single polymorphic change at position 185 of SEQ ID NO: 6, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9368373 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 7, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl0935354 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 8, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs8095703 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 9, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs 10206851 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 10, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542977 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 11, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs4942879 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 12, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs9542954 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 13, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl593478 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 14, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542951 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 15, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs2188534 which is represented by a single polymorphic change at position 200 of SEQ ID NO: 16, wherein in one or two alleles the wild-type nucleotide G is replaced by indicator nucleotide T,
SNP rs 12524124 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 17, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs4352629 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 18, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs7448716 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 19, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1873533 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 20, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl 0062658 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 21, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 2547917 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 22, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl 038268 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 23, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs2375811 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 24, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl352671 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 25, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C, • SNP rs364331 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 26, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
• SNP rs 1924949 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 27, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rsl 1025990 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 28, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs3758562 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 29, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rsl 0156056 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 30, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide G.
The status of a marker indicative for CRH overactivity may be determined by a method comprising determining the status of a marker as defined herein in a nucleic acid isolated from a patient's sample, wherein the presence of indicator nucleotides as defined herein is indicative for CRH overactivity.
The term "bio marker", as used herein, relates to any nucleic acid sequence of any length, or a derivative thereof, which comprises a polymorphic variant as defined in:
• SNP rs6437726,
• SNP rsl986684,
• SNP rs7380830,
• SNP rs3903768,
• SNP rs7325978,
• SNP rsl3585,
• SNP rs9368373,
• SNP rsl0935354,
• SNP rs8095703,
• SNP rs 10206851,
• SNP rs9542977,
• SNP rs4942879,
• SNP rs9542954,
• SNP rsl593478,
• SNP rs9542951,
• SNP rs2188534,
• SNP rs 12524124,
• SNP rs4352629,
• SNP rs7448716,
• SNP rsl 1873533,
• SNP rsl0062658,
• SNP rsl 2547917,
• SNP rsl038268,
• SNP rs2375811,
• SNP rsl352671,
• SNP rs364331,
• SNP rsl 924949, • SNP rsl 1025990,
• SNP rs3758562, and/or
• SNP rsl0156056. A bio marker may, for instance, be represented by a nucleic acid molecule of a length of e.g. 1 nt, 2 nt, 3 nt, 4 nt, 5 nt, 10 nt, 15 nt, 20 nt, 25 nt, 30 nt, 35 nt, 40 nt, 45 nt, 50 nt, 60 nt, 70 nt, 80 nt, 90 nt, 100 nt, 200 nt, 300 nt, 400 nt, 500 nt, 1000 nt, 2000 nt, or more or any length in between these lengths. The representing nucleic acid may be any suitable nucleic acid molecule, e.g. a DNA molecule, e.g. a genomic DNA molecule or a cDNA molecule, or a R A molecule, or a derivative thereof. The biomarker may further be represented by translated forms of the nucleic acid, e.g. a peptide or protein as long as the polymorphic modification leads to a corresponding modification of the peptide or protein. Corresponding information may be readily available to the skilled person from databases such as the NCBI SNP repository and NCBI Genbank.
The SNPs as described herein may be present on the Watson or the Crick strand, with presence of the corresponding base. I.e. if, for example, a polymorphism is present on the Watson strand as A, it is present on the Crick strand as T, if the polymorphism is present on the Watson strand as T, it is present on the Crick strand as A, if the polymorphism is present on the Watson strand as G, it is present on the Crick strand as C, and if the polymorphism is present on the Watson strand as C, it is present on the Crick strand as G, and vice versa. Also the insertion or deletion of bases may be detected on the Watson and/or the Crick strand, with correspondence as defined above. For analytic purposes the strand identity may be defined, or fixed, or may be choose at will, e.g. in dependence on factors such the availability of binding elements, GC- content etc. Furthermore, for the sake of accuracy, the SNP may be defined on both strands (Crick and Watson) at the same time, and
accordingly be analyzed.
A "polymorphic site" or "polymorphic variant" as used herein relates to the position of a polymorphism or SNP as described herein within the genome or portion of a genome of a subject, or within a genetic element derived from the genome or portion of a genome of a subject.
The term "wildtype sequence" as used herein refers to the sequence of an allele, which does not show the CRH overactivity phenotype according to the present invention. The term may further refer to the sequence of the non phenotype - associated allele with the highest prevalence within a population, e.g. within a Caucasian population. The term "indicator sequence" as used herein refers to the sequence of an allele, which shows an association with a CRH overactivity phenotype according to the present invention. The term "indicator nucleotide" as used herein refers to the identity of the nucleotide at the position of a SNP or polymorphic site as defined herein, associated with a CRH overactivity phenotype according to the present invention. The term may refer to a non- wildtype nucleotide at positions of SEQ ID NO: 1 to 30 as described below:
• SNP rs6437726 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 1, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs 1986684 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 2, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs7380830 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 3, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
• SNP rs3903768 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 4, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, SNP rs7325978 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 5, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl3585 which is represented by a single polymorphic change at position 185 of SEQ ID NO: 6, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9368373 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 7, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl0935354 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 8, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs8095703 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 9, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs 10206851 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 10, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs9542977 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 11, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs4942879 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 12, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs9542954 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 13, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl593478 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 14, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T, SNP rs9542951 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 15, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs2188534 which is represented by a single polymorphic change at position 200 of SEQ ID NO: 16, wherein in one or two alleles the wild-type nucleotide G is replaced by indicator nucleotide T,
SNP rs 12524124 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 17, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rs4352629 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 18, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs7448716 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 19, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 1873533 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 20, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
SNP rsl 0062658 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 21, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
SNP rsl 2547917 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 22, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rsl 038268 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 23, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide T,
SNP rs2375811 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 24, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G, • SNP rsl352671 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 25, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
• SNP rs364331 which is represented by a single polymorphic change at
position 201 of SEQ ID NO: 26, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide C,
• SNP rs 1924949 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 27, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rsl 1025990 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 28, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rs3758562 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 29, wherein in one or two alleles the wild-type nucleotide A is replaced by indicator nucleotide G,
• SNP rsl 0156056 which is represented by a single polymorphic change at position 201 of SEQ ID NO: 30, wherein in one or two alleles the wild-type nucleotide C is replaced by indicator nucleotide G.
The term "determining the status of a bio marker" or determining the status of a marker" as used herein refers to any suitable method or technique of detecting the identity of an SNP, e.g. at the positions of the biomarkers described herein. The determination method may be a sequencing technique or a technique based on complementary nucleic acid binding. The context of the indicated positions, as well as the strand may differ, e.g. from patient to patient, or from sample to sample etc.
The term "allele" or "allelic sequence" as used herein refers to a particular form of a gene or a particular nucleotide, e.g. a DNA sequence at a specific chromosomal location or locus. In certain embodiments of the present invention a SNP as defined herein may be found at or on one of two alleles in the human genome of a single subject. In further, specific embodiments, a SNP as defined herein may also be found at or on both alleles in the human genome of a single subject. The presence of an indicator nucleotide or an indicator triplet as defined herein on both alleles may have a higher predictive value than the presence of an indicator nucleotide or an indicator triplet on one allele only, the other allele comprising a wildtype genotype. The presence or absence of indicator nucleotides or indicator triplets on one or two alleles may be connected or linked with an algorithm for predicting the a treatment response to CRHR1 antagonists in patients with depressive symptoms and/or anxiety symptoms as described herein. A person skilled in the art would be able to derive the exact position, nucleotide sequence, and indicator sequence from the above identified rs-nomenclature, e.g. from suitable database entries and associated information systems, e.g. the Single Nucleotide Polymorphism database (dbSNP) which is incorporated herein by reference. The information may also be retrievable in case of changes to the nomenclature, or to the surrounding sequence elements, e.g. based on history functions of a suitable database.
The term "isolated nucleic acid molecule" a used herein refers to a nucleic acid entity, e.g. DNA, RNA etc, wherein the entity is substantially free of other biological molecules, such as, proteins, lipids, carbohydrates, other nucleic acids or other material, such as cellular debris and growth media. Generally, the term "isolated" is not intended to refer to the complete absence of such material, or to the absence of water, buffers, or salts, unless they are present in amounts which substantially interfere with the methods of the present invention.
In another embodiment, the biomarker constituting a marker for CRH overactivity is REM density.
Such a marker or set of markers or combination of markers as described above may be used for predicting a treatment response to CRH antagonists in patients with depressive and/anxiety symptoms. Exemplary embodiments for determining the status of a marker indicative for CRH overactivity are described below.
In particular, it has been found that a treatment response to CRH antagonists in patients with depressive symptoms and/or anxiety symptoms can be reliably predicted by using a machine-learning based prediction algorithm derived from the association of SNPs with values indicative for CRH overactivity.
The term "treatment response to CRHRl antagonists in patients with depressive symptoms and/or anxiety symptoms" in the sense of the invention refers to a response in a patient with depressive symptoms and/or anxiety symptoms during and/or after the treatment with one or more CRHRl antagonists compared to before the treatment. The response may range from a partial alleviation of the symptoms to a complete remission of the symptoms, indicated by the change of symptoms strength and/or frequency of relapse of individual symptoms and/or the mean change on a depression scale, e.g. as described herein. The response can occur shortly after treatment or after a certain time period. A decrease in symptom severity from pre- treatment of 25% or more is usually considered a partial alleviation of symptoms. Remission may be defined as achieving a value of 8 or less on the Hamilton
Depression Rating Scale (HAM-D) or equivalent values on other rating scales named below.
A further aspect concerns the provision of an algorithm for predicting a treatment response to CRHRl antagonists in patients with depressive symptoms and/or anxiety symptoms. The method may comprise the following steps:
(a) performing a single nucleotide polymorphism (SNP) genotyping analysis in a group of patients with depressive symptoms and/or anxiety symptoms;
(b) determining a value indicative for CRH activity in each patient of the group, wherein a value indicative for CRH overactivity is indicative or predictive for a patient responding to a treatment with a CRHl antagonist;
(c) identifying at least one SNP associated with a value indicative for CRH overactivity as determined in step (b); (d) determining the algorithm by machine-learning from the association of the at least one SNP identified in step (c) with the value indicative for CRH overactivity.
In a step (a), a single nucleotide polymorphism (SNP) genotyping analysis in a group of patients with depressive symptoms and/or anxiety symptoms is performed.
A "group of patients" as used herein comprises at least two patients, such as at least 10 patients, or at least 100 patients, or at least 150 patients. Patients included in the analysis of step (a) may exhibit at least a moderate to severe depressive mode. The group of patients may comprise patients with CRH overactivity and/or patients with normal CRH activity.
The term "polymorphism" as used herein refers to a variation in the genome of individuals, including, insertions, deletions, point mutations and translocations.
The term "single nucleotide polymorphism" is well understood by the skilled person and refers to a point mutation at a certain position in the nucleotide sequence. In other words, only one nucleotide differs in a certain region. The nucleotide, that is present in the majority of the population, is also referred to as wild-type allele or major allele. As used herein, this state is defined as "absence of a SNP".
The specific nucleotide that is present in the minority of the population is also referred as the point mutation, mutated nucleotide or minor allele. As used herein this state is defined as "presence of a SNP".
In theory, the wild-type allele could be mutated to three different nucleotides.
However, the event of a mutation to a first nucleotide in the reproductive cells of an individual that gets established in a population occurs very rarely. The event that the same position is mutated to a second nucleotide and established in the population virtually never occurs and can be therefore neglected. Therefore, as used herein, a certain nucleotide position in the genome of an individual can have two states, the wild-type state (absence of a SNP) and the mutated state (presence of a SNP).
The term "single nucleotide polymorphism (SNP) genotyping analysis" as used herein refers to a test of determining in one or several patients the presence or absence of at least one SNP, typically several SNPs, and in some embodiments all (known) SNPs the human genome, including endogenous and exogenous regions. In particular, a SNP genotyping analysis as used herein may not be limited to the CRHR1 gene or to genes of the CRH pathway. In other words, an SNP genotyping analysis as used herein can be a genome -wide screening for SNPs.
SNP genotyping analysis can be performed by methods known in the art such as microarray analysis or sequencing analysis or PCR related methods or mass spectrometry or 5 '-nuclease assays or allele specific hybridization or high-throughput variants of these techniques or combinations thereof. These and other methods are known in the art. See for example Rampal, DNA Arrays: Methods and Protocols (Methods in Molecular Biology) 2010; Graham & Hill, DNA Sequencing Protocols (Methods in Molecular Biology) 2001; Schuster, Nat. Methods, 2008 and Brenner, Nat. Biotech., 2000; Mardis, Annu Rev Genomics Hum Genet., 2008. Genomewide arrays can be purchased from different suppliers such as Illumia and Affymetix.
For example, the determination of the nucleotide sequence and/or molecular structure may be carried out through allele-specific oligonucleotide (ASO)-dot blot analysis, primer extension assays, iPLEX SNP genotyping, Dynamic allele-specific hybridization (DASH) genotyping, the use of molecular beacons, tetra primer ARMS PCR, a flap endonuclease invader assay, an oligonucleotide ligase assay, PCR-single strand conformation polymorphism (SSCP) analysis, quantitative real-time PCR assay, SNP microarray based analysis, restriction enzyme fragment length
polymorphism (RFLP) analysis, targeted resequencing analysis and/or whole genome sequencing analysis. In some embodiments, any of the methods described herein comprises the determination of the haplotype for two copies of the chromosome comprising the SNPs identified herein. A "subject's sample" as used herein may be any sample derived from any suitable part or portion of a subject's body. In some embodiments, blood or saliva samples are used. The sample used in the context of the present invention should be collected in a clinically acceptable manner, in particular in a way that nucleic acids and/or proteins are preserved.
The term "primer" may denote an oligonucleotide that acts as an initiation point of nucleotide synthesis under conditions in which synthesis of a primer extension product complementary to a nucleic acid strand is induced. The term "probe" may denote an oligonucleotide that selectively hybridizes to a target nucleic acid under suitable conditions.
The primers and probes may be generated such that they are able to discriminate between wild-type allele or mutated allele of the position of a SNP to be analyzed. Methods for the design of sequence specific primers and probes are known in the art (see e.g. William B. Coleman, Gregory J. Tsongalis, Molecular Diagnostics: For the Clinical Laboratorian, 2007; Weiner et al. Genetic Variation: A Laboratory Manual, 2010). Typically, a SNP is considered in the genotyping analysis if it occurs in a certain percentage in the population, for example in at least 5 % or at least 10% of the population. In other words, the minor allele frequency (MAF) is larger than 0.05 or 0.10 (MAF > 0.05 or MAF > 0.10).
For the SNP genotyping analysis a nucleic acid or DNA sample from a subject or patient may be used. The nucleic acid or DNA sample can be a blood sample, a hair sample, a skin sample or a salvia sample of the patient. Any other sample obtainable from the patient and containing patient nucleic acid or DNA can also be used. The sample can be collected from the patient by any method known in the art. For example, a blood sample can be taken from a patient by use of a sterile needle. The collection of salvia out of the mouth and throat of the patient can be performed by use of a sterile cotton bud or by flushing said area and collecting the flushing solution.
Usually, the nucleic acid or DNA is extracted or isolated or purified from the sample prior to SNP genotyping analysis. Any method known in the art may be used for DNA extraction or purification. Suitable methods comprise inter alia steps such as centrifugation steps, precipitation steps, chromatography steps, dialyzing steps, heating steps, cooling steps and/or denaturation steps. For some embodiments, a certain nucleic acid or DNA content in the sample may be reached. Nucleic acid or DNA content can be measured for example via UV spectrometry as described in the literature. However, in alternative embodiments SNP genotyping analysis may also be performed by using a non-extracted or non-purified sample.
DNA amplification may also be useful prior to the SNP analysis step. Any method known in the art can be used for DNA amplification. The sample can thus be provided in a concentration and solution appropriate for the SNP analysis.
The analyzed SNPs may be represented by values 0, 1 or 2. The value "0" may indicate that the SNP is present on none of the two homologous chromosomes. The value "1" may indicate that the SNP is present on one of the two homologous chromosomes. The value "2" may indicate that the SNP is present on both homologous chromosomes. Homologous chromosomes correspond to each other in terms of chromosome length, gene loci and staining pattern. One is inherited from the mother, the other is inherited from the father.
In a step (b) of the method for providing a prediction algorithm, a value indicative for CRH activity in each patient is determined. Steps (c) and (d) of the method for providing a prediction algorithm may analyze the association of the analyzed SNPs with the value indicative for CRH overactivity and/or normal CRH activity and generate an algorithm for predicting the treatment response to CRHR1 antagonists.
In an exemplary embodiment, the group of patients may be split into two sets of similar size and similar values for descriptors such as demographic descriptors or clinical descriptors. These two sets are hereinafter also referred to as "training set" and "test set".
In step (c) of the method of this exemplary embodiment, at least one SNP associated with the value indicative for CRH overactivity as determined in step (b) is identified in the training set. Further, there can be at least two alternatives for the result provided by the prediction algorithm. First, the result may be a categorical answer whether the patient responds to CRHRl antagonist treatment or not. Second, the prediction algorithm may provide the answer to which degree the patient responds or does not respond to the treatment. Depending on the desired result provided by the prediction algorithm the way of determining the algorithm may differ.
In the alternative that the prediction algorithm will analyze whether a patient responds or does not respond to CRHRl antagonist treatment, the values indicative for CRH activity may be provided as logic data variable (Boolean type; 0 vs. 1; true vs. false, high vs. low responder). Therefore, if the test performed to determine values indicative for CRH overactivity provides a data range, the patients may be dichotomized by a threshold into high vs. low responders.
In the alternative that the test will analyze to which degree the patient responds or does not respond to the CRHRl antagonist treatment, the values indicative for CRH activity may be provided as numerical values. Typically, SNPs that are modified in a significant percentage of the population are used in the method for providing a prediction algorithm. For example, only SNPs with a minor allele frequency (MAF) greater than 0.05 or 0.10 may be selected for further analysis. This means that only SNPs that are modified in at least 5 % or 10% of the population are selected for further analysis.
Association for all SNPs with the value indicative for CRH activity is tested by an association analysis testing the likelihood for a patient to be CRH overactive vs. CRH non-overactive in dependence of the genotype of said patient. Said association analysis may be conducted for example by an additive genetic model and/or by a logistic regression. A SNP is e.g. identified to be associated with a value indicative for CRH overactivity if the corresponding p -value is at least 1 x 10 3 or at least 1 x 10 "4 or at least 1 x 10 "5 . The lower the p-value the more the SNP is associated with a value indicative for CRH overactivity. Accordingly, a SNP is e.g. identified to be associated with a value indicative for normal CRH activity if the corresponding p- value is at least 1 x 10 "3 or at least 1 x 10 "4 or at least 1 x 10 "5 .
In the step (d) of this exemplary embodiment, the algorithm for predicting a treatment response to CRHR1 antagonists may be determined by the use of SNPs in the test set by a machine learning method.
The term "algorithm for predicting" as used herein may refer to a classification function (also known as binary classification test). The term "machine- learning" as used herein may refer to a method known to the person skilled in the art of machine learning. In particular, machine learning is concerned with the design and development of algorithms that allow computers to evolve behaviors based on empirical data, such as from sensor data or databases. It may be selected from the group consisting of artificial neural network learning, decision tree learning, support vector machine learning, Bayesian network learning, clustering, and regression analysis. The term "reliable prediction of the treatment response to CRHRl antagonists" as used herein may refer to a high performance of the prediction algorithm. The evaluation of the performance of the prediction algorithm may depend on the problem the algorithm is applied for. If the algorithm is used to identify patients that are likely to response to the treatment with CRHRl antagonists the performance is usually expressed by a high accuracy and/or sensitivity and/or precision. If patients should be identified which are likely not to respond to the treatment with CRHRl antagonists, specificity and/or negative predictive value are typical statistical measures to describe the performance of the prediction algorithm.
For optimizing the prediction performance of the algorithm, the step of determining the algorithm by a machine-learning method in a first subset of the test set and testing the prediction performance in an second independent subset of the test set may be repeated based on different numbers and groups of SNPs, until the desired prediction performance is reached.
Accuracy, sensitivity, precision, specificity and negative predictive value are exemplary statistical measure of the performance of the prediction algorithm. In the following, examples are given for determining the performance of the prediction algorithm.
As used herein, accuracy may be calculated as (number of true positives + number of true negatives) / (number of true positives + number of false positives + number of true negatives + number of false negatives), e.g. (number of patients correctly diagnosed as responding to CRHRl antagonist + number of patients correctly diagnosed as not responding to CRHRl antagonist) / (number of patients correctly diagnosed as responding to CRHRl antagonist + number of patients wrongly diagnosed as responding to CRHRl antagonist + number of patients correctly diagnosed as not responding to CRHRl antagonist + number of patients wrongly diagnosed as not responding to CRHRl antagonist). The accuracy of prediction may e.g. be at least 60%, at least 70%, at least 80% or at least 90%. A used herein, sensitivity may be calculated as (true positives) / (true positives + false negatives), e.g.: (number of patients correctly diagnosed as responding to CRHRl antagonist) / (number of patients correctly diagnosed as responding to CRHRl antagonist + number of patients wrongly diagnosed as not responding to CRHRl antagonist). The sensitivity of prediction may be at least 60%, at least 70%, at least 80% or at least 90%.
As used herein, precision (also referred to as positive predictive value) may be calculated as (true positives) / (true positives + false positives), e.g.: (number of patients correctly diagnosed as responding to CRHRl antagonist) / (number of patients correctly diagnosed as responding to CRHRl antagonist + number of patients wrongly diagnosed as responding to CRHRl antagonist). The precision of prediction may be at least 60%, at least 70%, at least 80% or at least 90%.
As used herein, specificity is calculated as (true negatives) / (true negatives + false positives), e.g.: (number of patients correctly diagnosed as not responding to CRHRl antagonist) / (number of patients correctly diagnosed as not responding to CRHRl antagonist + number of patients wrongly diagnosed as responding to CRHRl antagonist). The specificity of prediction may be at least 60%, at least 70%, at least 80% or at least 90%.
As used herein, negative predictive value is calculated as (true negatives) / (true negatives + false negatives), e.g.: (number of patients correctly diagnosed as not responding to CRHRl antagonist) / (number of patients correctly diagnosed as not responding to CRHRl antagonist + number of patients wrongly diagnosed as not responding to CRHRl antagonist). The negative predictive value may be at least 60%, at least 70%, at least 80% or at least 90%.
Other statistical measures useful for describing the performance of the prediction algorithm are geometric mean of sensitivity and specificity, geometric mean of positive predictive value and negative predictive value, F-measure and area under ROC curve, and the positive and negative likelihood ratios, the false discovery rate and Matthews correlation coefficient. These measures and method for their determination are well known in the art.
In general, a prediction algorithm with high sensitivity may have low specificity and vice versa. The decision to select an algorithm having certain statistical
characteristics such as accuracy, sensitivity or specificity may also depend on the costs associated with a treatment with a CRHR1 antagonist should the prediction be positive and/or whether such a treatment is detrimental in cases where the result is a false positive.
For a prediction whether a patient likely responds to the treatment with CRHR1 antagonists the prediction algorithm may be based on a number of SNPs sufficient to achieve a prediction sensitivity and/or precision of at least 55%, optionally at least 80%.
For the prediction whether it is unlikely that a patient responds to the treatment with CRHR1 antagonists the prediction algorithm may be based on a number of SNPs sufficient to achieve a prediction specificity and/or negative predictive value of at least 55%, optionally at least 80%.
For a prediction whether a patient responds to a treatment with CRHR1 antagonists or not the prediction algorithm may be based on a number of SNPs sufficient to achieve sensitivity and/or precision and/or specificity and/or negative predictive value of at least 55%, optionally at least 80%.
In one embodiment, a number N of SNPs is associated with a value indicative for CRH overactivity or normal CRH activity in step (d) of the method for providing an algorithm and/or the presence or absence of a number N of SNPs is determined in step (a) of the method for predicting a treatment response, wherein N is sufficient to provide an accuracy of at least 80% and a sensitivity of at least 70% and a specificity of at least 70%. In another embodiment, a number N of SNPs is associated with a value indicative for CRH overactivity in step (d) of the method for providing an algorithm and/or the presence or absence of a number N of SNPs is determined in step (a) of the method for predicting a treatment response, wherein N is sufficient to provide an accuracy of at least 85% and a sensitivity of at least 80% and a specificity of at least 80%.
Typically, at least 10, at least 20, at least 25 or at least 30 SNPs are used for determination of the algorithm in step (d) of the method for providing a prediction algorithm. The skilled person in the art knows that the use of different machine -learning methods and adapting parameters used therein can be also used for improvement of the prediction reliability. The whole statistical work-flow can be automated by a computer. Another aspect is a method for predicting a treatment response to CRHR1 antagonists in patients with depressive symptoms and/or anxiety symptoms, wherein the method may comprise the following steps:
(a) determining in a nucleic acid sample obtained from a patient the presence or absence of at least one single nucleotide polymorphism (SNP) associated with a value indicative for CRH overactivity;
(b) predicting the treatment response to CRHR1 antagonists by linking the prediction algorithm provided by the method described above with the presence or absence of the at least one SNP determined in step (a). "Linking an algorithm for predicting a treatment response to CRHR1 antagonists in patients having depressive symptoms and/or anxiety symptoms with the presence or absence of the at least one SNP" as used herein may refer to using such an algorithm to predict the treatment response based on the determined presence or absence of the at least one SNP, e.g. by integrating the at least one SNP determined in step (a) of the above method by the algorithm.
In one embodiment the method comprises a further step of obtaining a nucleic acid sample from a patient preceding the step of SNP determination.
In one embodiment of the method for predicting a treatment response to CRHR1 antagonists in patients with depressive symptoms and/or anxiety symptoms, step (a) comprises determining at least one of the SNPs, optionally all of the SNPs which were associated with a value indicative for CRH overactivity when determining the algorithm by machine- learning from this association.
Typically, a SNP is considered in the genotyping analysis of step (a) of the method of prediction if it occurs in a certain percentage in the population, for example in at least 5 % or at least 10% of the population. In other words, the minor allele frequency (MAF) is larger than 0.05 (MAF > 0.05) or 0.10 (MAF > 0.10).
For the SNP genotyping analysis of step (a) of the method of prediction, a nucleic acid or a DNA sample from a patient may be used. The nucleic acid or DNA sample can be a blood sample, a hair sample, a skin sample or a salvia sample of the patient.
Any other sample of the patient containing nucleic acid or DNA can also be used.
The sample can be collected from the patient by any method known in the art. For example, a blood sample can be taken from a patient by use of a sterile needle. The collection of salvia out of the mouth and throat of the patient can be performed by use of a sterile cotton bud or by flushing said area and collecting the flushing solution.
Usually, the nucleic acid or DNA is extracted or purified from the sample prior to SNP genotyping analysis. Any method known in the art may be used for DNA extraction or purification. Suitable methods comprise inter alia steps such as centrifugation steps, precipitation steps, chromatography steps, dialyzing steps, heating steps, cooling steps and/or denaturation steps. For some embodiments, a certain DNA content in the sample may be reached. Nucleic acid or DNA content can be measured for example via UV spectrometry as known in art. However, the SNP genotyping analysis may also be performed by using a non-extracted or non- purified sample. Nucleic acid or DNA amplification may also be useful prior to the SNP analysis step. Any method known in the art can be used for DNA amplification. The sampled can thus be provided in a concentration and solution appropriate for the SNP analysis.
The analyzed SNPs may be represented by values 0, 1 or 2. The value "0" may indicate that the SNP is present on none of the two homologous chromosomes. The value "1" may indicate that the SNP is present on one of the two homologous chromosomes. The value "2" may indicate that the SNP is present on both homologous chromosomes. Homologous chromosomes correspond to each other in terms of chromosome length, gene loci and staining pattern. One is inherited from the mother, the other is inherited from the father.
In order to determine SNPs, SNP-specific primers and/or probes, a primer extension reaction, SNP microarrays, DNA-sequencing may be used. These reagents and methods are routinely used in the art (see for example Chen, PCR Cloning Protocols (Methods in Molecular Biology) 2002; Schuster, Nat. Methods, 2008, Rampal, DNA Arrays: Methods and Protocols (Methods in Molecular Biology) 2010;
Brenner, Nat. Biotech., 2000; Mardis, Annu Rev Genomics Hum Genet., 2008). For example, MALDI-TOF (matrix-assisted laser desorption ionization time of flight) mass spectrometry on the Sequenom platform (San Diego, USA) may be used to genotype the selected variants. For primer selection, multiplexing and assay design, and the mass-extension for producing primer extension products the MassARRAY Assay Designer software may be used using the sequences presented in table 2 as input. The MassARRAY Typer 3.4 software may be used for genotype calling. Any other reagent or method known to the person skilled in the art may be used in order to detect the SNPs in an individual.
In one embodiment, at least one SNP determined in step (a) and used for the prediction algorithm of step (b) is a SNP selected from the group consisting of SNPs as shown in table 2 and an SNP in strong linkage disequilibrium with any of the SNPs shown in table 2. Table 2: SNPs (together with flanking sequences) which may be used to predict the response to CRHRl antagonists in patients with depressive symptoms and/or anxiety symptoms. The position of the SNP is indicated in bold as [wild-type allele/mutated allele].
SNPJD SEQUENCE
CAAGAAAGAGAGTAATAAAAATAACCACAATGAGGGCTCTCATTAATACT
GGATCTTATGGAAACCAATTGTTCAGTCCCTCAACAAAAGACCAGATGG
GCAGGAAGCTAAATATACACCATGCACTAAACATTATGAGTATCATAGTT
RS6437726 TACAAGTCAAAGGGGGCTCTATTGAAGATAGTTCTA I I I I CCCTCTATAT SEQ ID T[A/G]TCTGCTAGACAATACCTGATAACATTATCCAAGTAAATGACAACTT NO. 1 GATAAATAGTAATTTCCAATGGTGAACAGAGGTGACA I I I CCTCATTACA
AAAATATTTTCTTTGGCAGATGAGATTAACTGAATAAGAAATCCACTGAC
ACTGAAATCACAGAGCCAAATTCCCTATCACAGCACTTATCACATTGCGT
TAGG
TTCCTTGTAGCGGGGAGAGAGACTCAGGGAAGGCAGGGTGATACCTGA
GTTGGGGCTTAAAGCAAGGTAGGGTGTGTGTGGTGATGGCAAAATAGG
TAGGAAGACAGCACGGGCAAAGTCCTGGAGGCAAGGACAGAAAGAGGA
RS 1986684 AGTGGCAGGAAGTGAGGCTGGGGAAATGAGTAGGGGTCAATCATGATG SEQ ID TTTCTGGT[A/G]TAGGGAAGAGTTTGGAATGCATCCTCTAGGCCATACGC NO. 2 CATTGGGGGCTTTTAAGAAAGACAGTGATGTTGGTTTGATTTGCATTTTA
TATAGACTTTTCTGGCAGCTGAGAGGAAGGTGGTTTTGAGAATCACAAA
GCTGCGGGAAGATCAGTCAGGAGGGTTCTAGAATAATCCAGGCAAGAG
CTGATGGGGACTGAG
ACAGGGGTGGCTACTCTTTCTCCAGAAATAGGTGTCCTGTGGGGCATTT
TGAAGTAGAATGTTGATAGTTGCTTTCAATTTTAGACTGGTAAATAAGAAT
TGGGCATTTGAA I I I CAATATACTCACTGTGTAACTGTTATTGAGTATGCT
RS7380830
TTAAGTGACCTATAATACTGCTTCATTTAACTTTATTGTCCTAATAACT[C/ SEQ ID
T]TCTTAGAGTGACAATAACTTAGGTTAGCCACTTGCCTAGGGTTCTGAA NO. 3
ACCAAGTAAATGGTGGAGCTGGAATTGCTGTTCTTGTCAGTCATTAGACT
AGATCGGTTTTCTTCTTCCTACAAATTTTATATACTAAAAAATTTTGAAAAA
AGACATTTTTCTTTGGGAAAAATAGGGAATGTCAGATCCCTTTGGAGATG
CTCGCAGCAACCAAGCCTGCCCAAGCCGGGGAAACCTGGGGAGCAAAC CTTCACCTGCACTGTACATCAGAGACCAGTTGGCCCTA I I I I GGCTCCT GTGGACAGGTAAGTATCCC I I I I GACTCATCCCCCAAATATCAGGTGAG
RS3903768 CCAGGAAAATAAGGCC I I I GGCTTAGACAGTCAATTCAAAGTCTGCCAT SEQ ID AG CAT[A/C] CCTAATT ACATCCCTATTG CCCCTTTTCTAGGTCGTTTCTCC NO. 4 TCTAACACGATTTTATTTTTCTGTCAGCCATTTTATTTTATTTCTCACCTTG
AAATATATGTTTTCTTTGCAGTTTTTGCTTTGGCTTCCTGCTAACTCTATT TGGGCAATTG I I I AAGGCTGAACACTTGGTTATGAGAGGTACCCTGTTG TGTTGA
TCATCAAGTCTCCTTTTTCTCTAGGAAAAATAACATTGTCAAGGTTATTAA CAGTCAATAAGCTGTCATAGGCTCAGCATGGATGGGGATATTGGG I M C CTTGTGCTTATATGAAAGATGGGAAAATCCGAAGTTC I I I I CACCCTGAT
RS7325978 ATGGAAAATACCCAACATGAGGAGAAGCAGCAGCTATATGATTCTGAGC SEQ ID A[C/T]AGAATGGGAGTAAGAATAGGGTCATGCTGTACTGATTATCTGCTA NO. 5 ATAAAATGCAAAAGTGTTAGGTAA I I I CATCAATATCCAGTTAATACTAAT
ATAGTTAATATTTCATGACTGGGTAATATTTTATAATGATAAATATTTTTAT AGATCTTAGCTCTTTTTATTCTCATATCAACTGTATGAAATCAGTGATTGG T SNPJD SEQUENCE
CTGGGGACCTCAGGGAGAGGTACGCAGGTTGCCATGGCTGCGTCTGCA GTCCACCTGCC I I I CCACGCCAGGGAGTCAGTGATGTGGAGCCCCCTG GGCCCCAGTGGAAGCAGCGATCAGACTATGTGTCCTTGAAATAATG I I I
RS 13585 ATTCCACGCTGTCCCGACAGCCCCCTCTGCAGGTCCCCT[C/T]GGTGTA SEQ ID CTCTGAGGTGGGAAACCCTCCCTGGGGGCGGTGAAGGGGAACTCGGG NO. 6 CCACCCCACCAGCCAGCAGATGCTCCAGCAGCCAGAGCCCCAGCCTGG
AGCTGAGGCTCTTCCTGGGGCTCGCCGGGCCCCTGCAGGC I I I I CGGA CCCTCAGCCAGCCCGGCTTCCTCTGC I I I GGGCAGCAGCAAGCTGGCC CTT
TTCCTGTGCCTCAGCTCCTCTGTAGAATGGTGCTGGCAATACAGTTTGC
CTCATTGGGCTCTTGTAAGC I I I AAATAGGTTATTATACATAAAGAGCTA
ATAGTGATGCCTGTAGCCGTTGTCTAAGTGCTAGCTCTGATGATGGTGA
RS9368373 CAAAGAAGTAATAGCAATCAGTGGTTTAGATTAAACCATTTTAGGCATAA SEQ ID AC[C/T]GTTCTGCTAGAATCCAAGGGGAGATTTTTTCCCATCAAGGAGAC NO. 7 ATAGCTTGTTGGGAAGATAAGACATACCCAATTGCAGAAGTAATTAATTA
ATTCTTTTTTTTTTTTTTTTTTTTTTTTTTGCGATGGAGTTTCGCTCTTGTT
GCCCAGGCTGGAGTGCAATAGCATGATCTCGGCTCACCACAACCTCTG
CCTCCT
ATAGGCCCTATACAGCTCTCAATTTCTTTAATCAATCTTCCTAGCAGCCC
GTGAGAAATATTACTGTCTTCAGCTTCCTAAAGGAGAAAACAGAGGCCT
G G AG G G ATTAAAAG ACTTTTCTAAG ATTTTAG AG G G C ATG TT AG G GTTC A
RS 10935354 GGCCCAGGGCTGTCTAACCCAAGGCCTAATTCCTTCTATTACATCCATC SEQ ID AT[A/G]CATGAGTGAGCACTGGGCATGAGGATACGTCAGTGAAAGGGGC NO. 8 CCTGTAACATG G ACCTTACA I I I I GGCTGGGGGAGACAGGCAATGAATA
CATAGGACCATGTTGGGAAGTGCTAAGTACTCTGATGATAACACAGCAG
GGTGAGGTGACAGAGGTCTAGGGAGAGTGGTGTTCAGCAAAAACTTCT
CTGGGGAGAGA
AAAATTTACCAGGTTTAAAAAAAAAAAAACTCAAATGATATTTCAGAAACC
TACCCCTTTCAAAACAAGGAGGAGAAAAATCTTCTCCACAAAAGCACATA
TTGAAAAAATA I I I I GGGGGCAAGGCCTGAAAGGGTTGGCAGTGTGCAG
RS8095703 TTCTGTTATTATTCCCGTGGCCA I I I I ATGGGCCTCAGCAAAACACTGGG SEQ ID [A/G]TCATTATCTGTCTTCTGGTTACTCCAGGAGAGCTAGCCATCACAAC NO. 9 CCAATGGAAGAGACTTCAGAGAAACCCACACAGGCACCAGAAGTCCTTC
CCTTTCATCTGCCACTGTGGGGTTTTGTCCTCATCTATTACAATGTTGTC
CAATCTCAGACTGCATTCAGAACAAAGGCTCTCAGACTGAGGATGAGTT
CTTGGA
CCAAATAATTGTTATTGTTGTTTTAACATGGCAATCACGTTATTTGCCATA TGTGAAAAAGAATATTTAAAATGCTTTTTAAAACTATGTATGTAAAAGAAT GTTTAAATTGTTTTAAAAATATGTTATATCTACCTTGGCACCATCCTTGCT
RS10206851
GTTGAGAAATGAC I I I I ACCTGCTTACTTAGAAGGAAATGTCAGAAG[C T SEQ ID
]AGAAGTACATTTGAATACGATTATTTGAAAGCTTCATCCATTTTTCAAAG NO. 10
AATGTATACAGTAACACTAAATAGAAAGCATAG I I I ATCAACTCTTCACTA AGAACAGTCTAGCAAGTATATCAGAGTGGCTGTGGTTCCAGTTGGACTA ACCTAATCA I I I ATGAAAAGGTGATAATAAGCTTGGACCAAGAGCACCCA
CAGATGTTATGTGAAACTCTGGAGAAATAGTAGCAAGCAAGACTCACAT
GCCTCCTGCCCTCACAGAGCTCCATGATCTGGTGAAAGTGCCAGATATT
TAAACCCATGGATGTGTGCACACAAAATAACAATTCTCTCAAGCGTTGTG
RS9542977 AAGAAAAGTCACAGAGCACTACAAAAGCATGTAAGAGTGAGGCAAAACC SEQ ID TAT[C T]GTGTTAGGACAGGGAAGGCTTCTGTGAGCTAACCTGAAGGAT NO. 1 1 GAGTAGGGGTGAGCCAGATGAAAAGGCGAGAGAAAAACATTCTGAGCA
GAGACTGCCACTGAGTGCATCCCAG I I I I CCCAACATCTTAACACTGTAT
AATGACTACACTGGA I I I I CTTCATCCTGGATCCATGGTTAGACATGTTA
ATATGCCTTC SNPJD SEQUENCE
CCCAGTCTGTGGTATTTTTTTATAGCAGCACAAACAGACTAACACAAGAG
GTGGATAGGATTTGCGAGCATGGACCTTGGAGGTTTGTGGCCTCAATTT
AAAGTGAGTACATTCACCCAGCTGGTGTTTTTCTCTTGCTGCTTGGGCA
RS4942879 CAGAGATGGAGTAAATGGGTCTAATCAAGGATAAAGGGAGAGCCAAAGA SEQ ID GAT[A G]GTAATATTTGAAAGGAAGTGTTTTTAATGATGTGCCATGTAATC NO. 12 TGAGCTGGGTCAGGAATGAAGTGAAAAACTAAGAGATGATGGATGATGA
TAGGGGCTGTGAAAGGAAAACAAATCTTGGGGCCCCCAAATCACTAAGC
TAAAGGAGAAAGTCAAGCTGGGAACTG I I I AGGGCAATCCTGCCTCCCA
I I I I ATTCA
TATTACTGCTGAGAAAACTGGGTTTGATAAACTAAAGATGCCCATGTATA TCAGTCATGCTCCTGGTGAGAACAGGTGGCTCACTGCATAATGAGAGGA ATATTCAATTAACTA I I I ACAAAGCTATGGATGACATGTAGGGAAGCCAC
RS9542954 AGAGAGAGTACAGTATCTAGAGCTAGTAAGAGTAGAAGGCCATCACTGT SEQ ID CC[A/C]CAGGCCTAAAGGAGGTAGAGCAGTCAAAGGAAACAAGAGACAA NO. 13 GGGAGGCTGCGAGGACAGGGCCACCTGGCAGAGCCATAACCTTAAACT
AGGTAGTCACTTCTTGGCAACTCTGCAGGTAGGGAGCCAACCTCAC I I I TAACCCTCCCTCTG ATG CCCAGCTG G I I I ACCCC ATTG GTG AAAATCAG TGGGTGAGGGA
CATGAAAAGATACTTAACATTGTAACATCTTTGCATTAGGGAACTGCAAA
TCAAAATCATAACAAAATAGTACTGCATGCTCATTAGGATGACTATAATC
CAAAAGAATAAAAAAGAAAATAACAGGTGTTGGTAGGGATACAGATATAG
RS 1593478 AGAAACTGGAGCTCTCATGCCTTGCTGGGGGGCATGTAAAATGATTCTG SEQ ID C[C/T]GCTTTGGAAAACAGTTTGGTGGTTCCTCAAAAAGTTAAACATATAA NO. 14 TCCAACAATTCCACCCAAAAGAATTGAAAGCAGGGTCTAGTACACCAAC
GTTCATAGCAGC I I I ATTCACATCAAGCCAAAGGTGGAAGCAGCCCAAA
TGTCTACTGATGGATGAGTTGATACACAAAATGTGGTATATATATGCAAT
GGAATA
GCCACTTGAATGCCCCAAAATGGAGAGATGGGCGTGGGAAGAGAAAGA
CACCTCAGCAACACAGAGCTGAGAAAACACTGTGAGTTTTATTTAATTCC
TACTTACCGTTATTTTGCATAGTAAACAAAAGGGATATTTTTGAAAATCCC
RS9542951 TTTG G ATAATTTCTGCCACCTAAAATTCTG AG CATTTTG ACTCACTG CCTT SEQ ID [A/G]TAAAAAGAATCAATTAATTGAATAAGAGAAGGGATTCTCCCCTGAT NO. 15 CTTTTCAAGAATCCTTAAAAGGCACATTTCTCACTAAGGATCTTGAAAGT
GTATTTCTAGCCAATCCCAGGAGTCACTGCTCAGAGATTTACATTTCACA
AATGTAATCAACAGCCTAAGCAGAATATTGACG I I I GGACTGCAGAGCT
CTGCT
AGGGTCCCCAAATATTTCCATTTGAGATGACAAAGTGCTCTTCAGTCATT TAGCTTACTCTTCAGTTCAGATGACTTATCATCTTGA I I I CAGAGAGTTCA TATATGTCTG I I I I AAAAAACTGGTTCAAAAAGTCTGAAGTTACGAAACTA
RS2188534 AACCAAATATGCATTACTCTCATGTCAAATTACAAGCTCTTAGCTGC[G/T] SEQ ID GGGATTTTTTCACATGCAGCCTGGAGCCCTTGAAAACCTCTGTTTTCTGT NO. 16 TAGACTCTCCAGGGTACACAGAAGTTGCCTCATTA I I I I AGTTAATGGTG
ACTGCAAATAAGCCCCCCAAGTCATTTAACTATGTGCTTACCACTGCTTT AAAAGAACCCCAAGTTAGGTCCTCATGTAGGTAAAGGAGCTCCCTTCAC A
ACTTGGGCCCAAAGGCATTCAACTAGAAAGCTGGTAATAATAACAGCGA CAGTTTATTGAGTCTTAGTGTTTCTGAGAACTTTTCTAAGTACTTTACACA TATTAAATTTTTAAATCTTCACATTAGTCCTGTGAGGAAGGTACTATTGTT
RS 12524124 ATGTCTGTATTACCCATGGGGATACTGACGCACAAAGAAGTCAAGTAAT[ SEQ ID A/G]TA I I I AAGATTCTAGTAAGTGCAGAGCCCAGGTGCATGCAGTGCCT NO. 17 GGGCTCTGCCACCCATGCAGTGCTGACTAGGGCTTCCACCCATGGA I I I
TTTTTTTTTTTTTTTTTTTTTGAGACAGAGTTTCGCTCTTGTTGCCCAGGC TGGAGTGCAATGGCATGATCTCGGCTCACCACAACCTCCGCCTCTCGG GTTCAA SNPJD SEQUENCE
CCCATAATAATGAAGGATTGGACCTGATAATCTATCAGGTACATTTTAGC
CTGAAATTTATTTGTACACACGCACAAACACAGACATGTGCACACACACA
TACACATATATATATAACATTTATAAATTTTAAAACATAAAGCTATACTAGA
RS4352629
AATGAAAGCTTATATATTGAACTGCCCCACCTTTCTATTTGCAGCCAG[C/ SEQ ID
T]TACCACCCCAGTCTAATGTTTCACTTTATATAAATTCATTTATTCTTTTA NO. 18
CTCATTTCAAATATATGATGATGTAACTATAAAATCAACATTTAGTCACTC
TGAATAACCCAAAATAGCAAATAATTTAAAAATCACTTCCACTTGAC I I I A
GAATCTATTACATGCATTGTTTTTCCAGAAAATTTACCTCATAATTAT
CTACTTATATGATTAGAGAACAAGAATACTAGGGGGAAAATCAGCATGCA TATAATCTAAGAAATTGTCATTATAATTTTAAAATCCTTTGCAAAATCAGTA AATATGAG I I I AACTTATATAATG ATACACACACACACTG ATATG ATG CTT
RS7448716
TATTGTCTAAACACTGGCTGCTTGTGGAGACGTATTCTGGTAACAAA[A/G SEQ ID
]AATATAGCATCTTAAAATTGATGCTAGCATTGTATATCCAAATAGAGAGT NO. 19
AAATGCAACCAGAATATTTTTTATATGTTTAACATTGTAGTGTTGCTGACA TCATTATATA I I I GGTTATGTTAATCTCAAAATGCACAATATAGCTGTATG ATCTGTATAATGCAAAAAAATGTAGAGCTTCA I I I I GATATTTATTAT
CTGGAAGGGAACAATGGAAGAGGTGCATTAGTCACATTCCAAAATGCAG
GAAGCAATAACATGTGGCACTATTGTCATTTATGTAGCACCCTAAATACT
GGGACAAATGACATAGATGCCCTTCTGTGATTACTAAACTCCCCCACAG
RS 1 1873533 TGTCTCAGAAGGAAGAGC I I I I G ACAG G AAATCATCAAG ATCTG ATG AC SEQ ID ATT[A/C]GAGAGCAATTAACATTCTCTTCAACCATGAACTAATTGCCTCAT NO. 20 TCACATTTTTCTAGCCATCCTAGGAAGCAGATAATAAGCAGCAATTGTCC
TGCCCAGGAATTCTGACTTGTGTAATTTGTAAAGCTTTTCTTTGTATCTAT
TTCTTTCCTGTGGCCATCTTTTTGTTTTTGGACTGTTTGGTAACAGTAAGT
GGGT
ATCATTCAGTATTAAGAGAGAAATGAATACATTTTCAGATATACAAGAATT CAG I I I ACCTCCCACAGAATCTCTGAAAAAAATATTAGATTACTATAGTTA AAAAGGAAAATAAAATAAGTCCTGTTAGAAATAATTGGTAAAAAAGCAAA
RS 10062658
GGTGATGAAAACTTATTGAAATATATTATTAAAGTAATTGTTAAAAAT[A/G] SEQ ID TACACTAAATCTAG AATATATAAATGTAG CAGTTGTTAAGG GG AAG GG G A NO. 21
AATAGAAGTGGAAGAAAATGAACATTAGAACAAATG I I I AGCAGTGGGAT TATTTTATTGGAAGTCTAATGTAAGAAGTATATTCTCCAGGGAGGTATTT CAAGGACATATGAATAGTAAAGGGATAATAAAACAACTCTATAAGGTAGT
CACACACAACG CTG GG CCCAGTAAATAAGTTTTGTTTTTTCCCAG GG AA
AAGTTGAACAACAATGGTGAGACCAGGAAGGCTCTCCGTTCACAGGAAA
TACTGTGTCACCGCTCGGCCGCAGGCTGTGTGAGGTCACGGGCGACGC
RS 12547917 TCGGGTCACGTGTGGCGGCTCCTGTTCACAGTGCCGTGTGTGATAAACT SEQ ID GGGAC[C/T]TTCTGGTGAGGGGAGACTGGCGGGGGGTGGGGAGGGCA NO. 22 AGGAGTGGGAAAGTCGCCTATAAATG I I I AACAAAAGATCCGCAATGGG
AACAGGAACTTGCATTCTTTCTTTCAATGGACAAAGCTTCCACATCAAGA
TACG CTTGTGTG CTG GG ACCAAATG CCACAGTG CGG CG AAACTCGTG A
GCACAAGTCCTGCGT
ACAACAGGGTATCCTAGCCCAGCAAAATTGACTCATAAATTTAATGATCA
CGCAATTGGTAATTCTAAATCCAGTCAGAAGTCTACATTCTGTGTCCACA
RS 1038268
GTGTCATGTCTAGATGTTGGTCCAGTCTCCCATGGACTGTGCCTTGTTAT SEQ ID
TTGTTTTCTCTTTGCTAAGCCACATCCCCTGAGGGCTCTGTTTATGCTCA[ NO. 23
C/T]TGCAAAATCTTTGACTTTTTAACTTACTGGGCATATTGTCTTCCTACT
TTTGTTCTCTTCTGTTATTTTATTTACTTGACTCTGACATGTCTCATTCCC SNPJD SEQUENCE
TTTCAATGGGACTGGTTGGACAGTGGGTGCAGCCCATGAAGGGCAAGC CAAAGCAGGCCGGGGCATCACCTCACCCGGGAAGCACAAGGGGTCAG GCGA I I I CTCTTTCCTAGTCAAGGGAAGCCATGGCAGACTGCACCTGGA
RS237581 1 AAAACGAGACACTTCCACCCAAATACTGCGTTTTTCGCAAGGTCTTAGCA SEQ ID ACTAAC[A/G]GACAAGGAGATTCTCTCCCGTGCCTGGCTCGGCTGGTCC NO. 24 CACACCCACGGTGACTTGTTCACTGCTAGCACAGCAG I I I GAGATCGAA
CTACGAGGCAACAACCTGGCTAAGGGAGGGGCATCTGCCATTGCTGAG GCTTGAGTAGGTAAACAAAGTGGCCAGGAAGCTCGAACTGGGTGGAGC CCACTGCAG CTTAG CA
ACTTTAGGGACTTTGAGTGATGGACAACCCCCTATCAGATATCATCAGC
CTGAAACATCCTTATCTTGGCATTAAATTAGAAGGAACCCCAGACCCTGC
RS 1352671 GTACCAGAATTGTTAGAATCACAGTCTCAGTAAAGAACCAACTCCTGATC SEQ ID ACTTCTCTAAAGGAAAGTTCTAGAAGTCTGCACACTCTGCAGTCAC I M C NO. 25 A[A/C]TTCTATCCAAGTGTACACTTAGAACTCTAGAAAACACTACGGACA
GTCTTCAGCCAGGTAAAGCCTAAAACCAGCAAAGAACAGGGAGAGTGA
GGGA
CGGATTATCACAGTTCTCAAAAGAGGAGTATGCATTTGCTTGCTCCAATT CCTCTTCTTCTACACTCTCTTAAGCATTCCTCAACCAGTCTAATATCTCAT AGTTCCCCAAAACTGCTCTGTTCAAGACCATTAGTAAGATC I I I GATGTT
RS364331 AATCTGTGGACCGTATCTCTGTCCTTA I I I I ACTTGAAGCCCAACAGCA[ SEQ ID A/C]ATAAAAAAGTTGTTCTCCTCTCCTCCCTGCTACACTTTCCTTATGTG NO. 26 GCTTG CTG GG CTCCTCAGTCCCCTGTG AAAAACTCTG ACATG G AG ATAC
TGCAGACCAGTAGAAGGGCTGGGCAGACACTATACAGAAACAGTATGC CCTACATGCTCCTTGGCTAAATCTCTAGAATTTTTTTCAGAACTCATCCA CAAATT
ATTTTATCTCATTTACTTATTAAATCAAACCAATATTTTATGAAGTGATTCC
AGTATTGGAATAAAAATGTAATTCTTTAATCATTAAAAAATCTTTATGAATA
CCTTACATCAACTGTAGGGGACCAACCAGGGAAAAGCAGGGAGACTTG
RS 1924949 TAGAATCTACACCTCCAGAACAACCGACCTCCATCTTCTGGACAACTC[A/ SEQ ID G]TCTTCTAAAGTGCAGGACAGACTAGTTGGGGGAGAAAGGAGGAAATG NO. 27 AAAGAGATAGACTAAAAGGGAGGGAGAGAACAGATATTTTTTAAGTACC
TGTTATGTTCTGGATACAGCACAGAGTACATTGTATCTATTATTATAAGG
CATAAAGAAAGATTTCTCAGGTTTTTGGAGTCAGATTGCAATATAAAATA
ATAG
TAACTTCAAATTGTTTTGCAAAATCTCTGTCATAAAAATGCTTACCAACAA ATACTGATACTAAA I I I AGATGTGGGGGTATTAGTTATAATCCTGAAGTG GGAGGGGGAACTTCTTAATTCCAA I I I AGTTCTAAGAGAAGGAAGAGTA
RS 1 1025990 TTTAGGCCCAGAGAAGGTTACGCTTAAAGGTCTGATAGTGTTTTCTTTGA SEQ ID [A/G]AAATATGTCTCAAACTAGAGAATAAAACTAATTATCTCATCTAAGTT NO. 28 ACCTAGAGACA I I I ATGCTCATCAGTTTGATAAAGGACTGCAAGTAGACA
CAGAAGCTGTA I I I I CAGTCTTGAACCCAGCAATAGTACATTAACAAGAT TGGGGCAAGGCAAAGGGAC I I I I GTGGCACAAGATACAATATATGGATT GCGT
CTCTTCAAAGGCCTTTGCCCTTGGGTACCACAGGTTCTGAGACAAGAGG GCTATGGAGAGCCCCCATTATAGCTGGAGCCTCCTGCCCTGCCCAAAG GTGTGACTTGAAGGGTGGAA I I I CAGGCAGCGTGGCTCGCCCCAGGGA
RS3758562 GGCAAAGAGGCCAGGGGAATCTTCAAAGGCCCTGGGCTCATCCCAGCT SEQ ID AGGAGGC[A/G]GGCACAGTCATAACCCTAATCCAGTGAACTCAGCCCTC NO. 29 ATCCTGACTCTCATGGTATTCTGTCCCAGGGAGCCTCTTTCCAGCTTTCT
TAGAAGC I I I AATGTCAGCACTTGCAGGGCCTTAGAAACTGCACGCTAC CTCTTCA I I I CATACATGAGGAAACTGAGGCCCAGGGTGGACACAGGGC TGCCCAGCGAGTTA SNPJD SEQUENCE
ATTATAAAGCAAAGCACTAACCTCATAGAATACCTGAGTCAAGTTCCCTG TGTTCTCA I I I I CTAGCCTCTTCTACCAGACACTATGAAAAATAACAGCC CCATCTCTCCAGAAAATCTTAGGAGATATAGGCGTGCTGAATTTAAGGT
RS10156056 GTCTGTGGCACATGCAAGTGGATCAGCCACTGGGCTGTCCAGAATGCA SEQ ID AGA[C/G]AGAACTCAGAGTTGGGGACATAAACTTGGCAGTCATCTGTGTA NO. 30 AAAGAGAAAAGGTAGGTAAAGTCCCACAAGGATGGGTTGGCCTACAGAA
GG CACAG AG AG AAG AG AG CCTG G I I I AGCATGGGCTACGATCAGAGTC CCTGGGTTCAAATCTTGGCTCCACCCA I I I CT ATCTG GTTG CTCT AG G G CATGTTACCTA
Polymorphisms in linkage disequilibrium with a SNP of table 2 can be identified by by methods known in the art. For example, Develin and Risch (Genomics, 1995) provide guidance for determining the parameter delta (also referred to as the "r") as a standard measure of the disequilibrium. Gabriel et al. (Science, 2002) provides instructions for finding the maximal r 2 value in populations for disease gene mapping. Further, Carlson et al. (Am. J. Hum. Genet. (2003) disclose methods for selecting and analyzing polymorphisms based on linkage disequilibrium for disease gene association mapping. Stoyanovich and Pe'er (Bioinformatics, 2008) show that polymorphisms in linkage disequilibrium with indentified SNPs have virtually identical response profiles. Currently, several databases provide datasets that can be searched for polymorphisms in strong linkage disequilibrium, which can be accessed by the following addresses: http://1000.genomes.org, http://www.hapmap.org, http://www.broadinsitute.org/mpg/snap. An example workflow for determining SNPs linkage disequilibrium to a specific SNP is outlined in Uhr et al. (Neuron, 2008).
SNP in strong linkage disequilibrium as used herein means that the SNP is in linkage disequilibrium with an r 2 higher than 0.7 or higher than 0.8 in the tested population or an ethnically close reference population with the identified SNP.
In another embodiment, at least 20, optionally at least 25 or at least 30 SNPs selected from the group of table 2 are determined in step (a) and integrated by the prediction algorithm in step (b). For example, all intergenic SNPs of table 2 are determined in step (a) and integrated by the prediction algorithm in step (b). In another exemplary embodiment, all SNPs selected from the group of table 2 are determined in step (a) and integrated by the prediction algorithm of step (b).
Typically, in step (a) of the method of predicting a treatment response to CRHR1 antagonists, the presence or absence of those SNPs is determined which were identified to be associated with values indicative for normal CRH activity or CRH overactivity and were thus considered when determining the prediction algorithm by machine- learning as described above.
In one embodiment of the method for predicting a treatment response to CRHRl antagonists in patients with depressive symptoms and/or anxiety symptoms, the method as described above may be accompanied by analyzing the rapid-eye- movement (REM) sleep, e.g. during night sleep of a patient in a sleep EEC
In other embodiments, an increase in REM sleep may serve as a biomarker to identify patients who would benefit from treatment with a CRHRl antagonist.
REM sleep typically comprises a characteristic coincidence of nearly complete muscle atonia, a waking-like pattern of brain oscillations and rapid eye movements (REMs). The amount of REMs during consecutive REM sleep episodes is usually increasing throughout the night. Single and short REMs with low amplitude can be characteristic for initial parts of REM sleep. The amount of REMs, in particular within the first REM sleep episode, can be of clinical relevance. Recent clinical and animal data supports the correlation of REM density with an increased CRH activity. For example, Kimura et al. (Mol. Psychiatry, 2010) showed that mice overexpressing CRH in the forebrain exhibit constantly increased rapid eye movement (REM) sleep compared to wildtype mice. In addition, it could be shown that treatment with the CRHRl antagonist DMP696 could reverse the REM enhancement.
Further, the SNP analysis and REM density analysis as described herein may be combined for predicting the response of patients with depressive symptoms and/or anxiety symptoms to treatment with a CRHRl antagonist. The REM analysis may be carried out before, concomitant or after the SNP analysis. For example, the REM density analysis may be carried out on persons that where identified by the SNP analysis as CRH hyperdrive patients.
The recording of a "sleep-EEG" (also referred to "polysomatic recordings") may comprise electroencephalography (EEG), vertical and horizontal elecrooculography (EOG), electromyography (EMG) and/or electrocardiography (ECG). In EOG, muscle activities of right and left eye may be recorded by electrooculograms (one or typically two channels) in order to visualize the phasic components of REM sleep. "REM analysis" or "analyzing the rapid-eye-movement (REM)" may refer to a method comprising recoding of muscle activities of right and left eye by EOG and then analyzing the electrooculogram. The recognition of REM in the
electrooculogram may be done manually (for example by standard guidelines Rechtschaffen and Kales, 1968, Bethesda, MD: National Institute of Neurological Diseases and Blindness).
The invention is further described in the following example which is solely for the purpose of illustrating specific embodiments of the invention, and is also not to be construed as limiting the scope of the invention in any way.
Example 1 Methods:
Patients:
Patients with unipolar or bipolar depression admitted as in-patients to the Max Planck Institute of Psychiatry (MPI), Munich, Germany, for treatment of a depressive episode were included in the study. Patients were diagnosed by psychiatrists according to the Diagnostic and Statistical Manual of Mental Disorders (DSM) IV criteria. Patients with bipolar disorder or depressive disorder due to a general medical or neurological condition were excluded, as were patients with a lifetime diagnosis of drug abuse and depressive symptoms secondary to alcohol or substance abuse or dependency. Ethnicity was recorded using a self-report sheet for nationality, first language and ethnicity of the patient and of all four grandparents. All patients were Caucasian and part of the Munich- Antidepressant-Response- Signature (MARS) project (Hennings et ah, J Psychiatr Res., 2009) (www.mars- depression.de). They were treated with antidepressant medications according to doctor's choice. Severity of depressive symptoms was assessed at admission and at the time of the dex/CRH test by trained raters using the 17-item Hamilton Depression Rating Scale (HAM-D, Hamilton, J Neurol Neurosurg Psychiatry, 1960). 192 patients fulfilling the criteria for at least a moderate to severe depressive episode (HAM-D>18) at both time points and who had been administered a dex/CRH test within 10 days of in-patients admission and had genome-wide SNP data were included in this analysis. The study was approved by the Ethics Committee of the Ludwig Maximilians University in Munich, Germany, and written informed consent was obtained from all subjects. Dex/CRH test:
The dex/CRH test was administered as described in detail in Heuser et al. (J
Psychiatr Res., 1994). In brief, subjects were pre -treated with 1.5 mg of
dexamethasone per os at 11 pm. The following day, at 3 pm, 3.30 pm, 3.45 pm, 4 pm and 4.15 pm blood was drawn. An intravenous bolus of 100 μg of human CRH (Ferring, Kiel, Germany) was given at 3.02 pm. Plasma ACTH concentrations were assessed by an immuno metric assay without extraction (Nichols Institute, San Juan Capistrano, California; USA). The neuroendocrine response to the dex/CRH test was analyzed using the total area under the curve (AUC) of the ACTH response. SNP Genotvping:
After enrollment in the study 40 ml of EDTA blood was drawn from each patient. DNA was extracted from fresh blood using the Puregene® whole blood DNA- extraction kit (Gentra Systems Inc; MN). Genotyping was performed on Illumina Human 610k quad genotyping arrays (Illumina Inc., San Diego, USA) according to the manufacturer's standard protocols. The average call rate exceeded 99 %, with samples below 98 % being either retyped or excluded from the study. The reproducibility for samples genotyped twice was 99.99 % or better. Data analysis:
To identify genetic predictors for the ACTH response to the dex/CRH test in patients with moderate to severe depression, the 192 patients were randomly split into a training (N = 96) and test set (N = 96). The demographic and clinical descriptors of these two samples are given in table 3.
Table 3:
Demographic and clinical description of the 192 patients in the trainings and test set. training set test set p-value
N 96 96
% female 52,1 57,2 n.s.
% bipolar (1 or 2) 12,5 12,5 n.s.
% with psychotic symptoms 15,2 11,4 n.s.
age (mean years (SD)) 47,2 (14,2) 51,3 (13,2) 0,038
BMI at admission (mean SD) 24,9 (4,1) 24,9 (4,3) n.s.
age-on (mean years (SD)) 34,72 (14,5) 36,6 (15,9) n.s.
number of previous episodes (mean
N (SD)) 3,2 (4,0) 3,3 (4,7) n.s.
depression severity at admission
(mean HAMD-17 score (SD)) 26,4 (4,4) 27,7 (4,8) 0,058 depression severity at dex-crh test
(mean HAMD-17 score (SD)) 26,9 (5,0) 28,5 (5,0) 0,029
Cortisol AUC (mean (SD)) 3611,4 (3414) 3688,6 (3491) n.s.
ACTH AUC (mean (SD)) 1246 (910) 1482,8 (1319) n.s.
days after admission when dex-CRH
test was performed 6,1 (2,2) 5,9 (2,2) n.s. After natural log transformation of the AUC of the ACTH response in the dex/CRH test, patients were dichotomized into high vs. low responders. For the ACTH AUC the cut-off was In ACTH AUC > 7.0. This placed 46.4% (89 out of a total of 192 individuals) in the high responder class. See the corresponding histogram in Figure 1.
Using an additive genetic model and a logistic regression with sex and age as covariates in PLINK (http://pngu.mgh.harvard.edu/purcell/plink/), the association of all SNPs with a MAF > 0.05 were tested on the 610k arrays with the dichotomized response for Cortisol and ACTH in the dex/CRH test in the training set. The top 30 associated SNPs were then used to predict either ACTH or Cortisol response status in the test set using a "Probabilistic Neural Network und General Regression Neural Network" approach (implementation DTREG 10.3.3 www.dtreg.com). All values were derived from a 20 fold cross validation.
Results:
The top 30 association with ACTH response status are given in table 4. Association p-values ranged from 5.0 e-5 to 2.3 e-4 for the ACTH response.
The genotypes for the 30 SNPs each were then used to predict ACTH response status in the second, independent test cohort (subgroup of the test set).
Table 4: List of 30 SNPs used to predict ACTH AUC in the second test cohort.
SNP Chromosome Coordinate HG18 P-value training GeneVariant GeneName rs6437726 chr3 108321446 5.037e-005 INTERGENIC N/A rs 986684 chr11 110629697 5.287e-005 UPSTREAM N/A rs7380830 chr5 66022641 5.459e-005 INTRONIC ENSG0000019656; rs3903768 chr13 49294756 6.811e-005 INTERGENIC N/A rs7325978 chr13 71960761 8.206e-005 INTERGENIC N/A rs13585 chr22 45131843 0.0001016 REGULATORY_REGION,3PRIME_UTR TRMU rs9368373 chr6 22024631 0.0001063 INTERGENIC N/A rs10935354 chr3 141026326 0.0001073 INTERGENIC N/A rs8095703 chr18 11041081 0.0001183 INTERGENIC N/A rs10206851 chr2 5381477 0.0001267 INTERGENIC N/A rs9542977 chr13 71958236 0.0001499 INTERGENIC N/A rs4942879 chr13 49314940 0.0001537 INTERGENIC N/A rs9542954 chr13 71918308 0.0001643 INTERGENIC N/A rs1593478 chr18 2292023 0.0001663 INTERGENIC N/A rs9542951 chr13 71913959 0.0001664 INTERGENIC N/A rs2188534 chr7 111837550 0.0001823 INTERGENIC N/A rs12524124 chr6 22051921 0.000185 INTERGENIC N/A rs4352629 chr5 87792577 0.0001985 INTERGENIC N/A rs7448716 chr5 87788451 0.0001985 INTERGENIC N/A rs11873533 chr18 3732713 0.0002107 INTRONIC DLGAP1 rs10062658 chr5 102881920 0.0002216 INTERGENIC N/A rs12547917 chr8 142306580 0.0002282 INTRONIC SLC45A4 rs1038268 chr9 31967623 0.000229 INTERGENIC N/A rs2375811 chr9 31979998 0.000229 INTERGENIC N/A rs1352671 chr9 32033985 0.000229 INTERGENIC N/A rs364331 chr9 32039631 0.000229 INTERGENIC N/A rs1924949 chr13 71975473 0.0002323 INTERGENIC N/A rs11025990 chr11 21218608 0.0002323 INTRONIC NELL1 rs3758562 ch O 72032086 0.0002369 INTRONIC PRF1 rs10156056 chr7 22720613 0.0002394 INTERGENIC N/A
The results of the prediction in the test set are summarized below:
For the prediction of the dichotomized ACTH response status in the dex/ CRH the following prediction values were achieved: ACTH:
Accuracy = 85.33%
Sensitivity = 87.18%
Specificity = 83.33%
Geometric mean of sensitivity and specificity = 85.23%
Positive Predictive Value (PPV) = 85.00%
Negative Predictive Value (NPV) = 85.71%
Geometric mean of PPV and NPV = 85.36%
Precision = 85.00%
Recall = 87.18%
F-Measure = 0.8608
Area under ROC curve (AUC) = 0.851852
Using genome-wide SNP association data for the ACTH response in the dex/CRH test, a subset of 30 SNPs could be identified that allowed an accurate, sensitive and specific prediction of these phenotypes in independent sets of patients. Increased ACTH secretion in this test has been linked to an increase in central CRH/CRHRl function. Although environmental, pharmacological and disease state-dependent factors have previously been described to influence the endocrine response to this test in depressed patients (Ising et al., Neuropsychopharmacol Biol Psychiatry, 2005; Heim et al. Biol Psychiatry, 2008; Kunzel et al. Neuropsychopharmacology, 2003^ ) , it has now been shown that genetic polymorphisms alone are strong predictors.
Patients with depression or anxiety disorders, classified into the high ACTH response group according to the genotypes of the presented 30 SNPs described in this example will be more likely to respond to CRHR1 antagonist treatment. This allows an enrichment of such patients for CRHR1 antagonist treatment studies who will most likely respond to this specific treatment.
Example 2:
Sleep disturbances, such as decreased slow-wave sleep, increased sleep
fragmentation and rapid-eye-movement sleep (REMS) disinhibition, are cardinal symptoms of major depression in humans. This study aims to identify those patients where a central CRH hyperdrive plays a causal role and which would therefore respond favourably to a CRHR1 antagonist. To test the relationship between a central CRH-overexpression and REM-disinhibition in particular, transgenic mouse models where CRH is overexpressed as a result of genetic engineering were employed.
Many animal models of depression share increases in REM-sleeps (REMS) as a common feature. Therefore, increased REMS in animals should reflect REMS- disinhibitions in humans. Mice with CNS -specific CRH-overexpression strikingly share the characteristic increases in REMS. As such, an increase in REMS indicates a central hypersecretion of CRH and may serve as a biomarker to identify those patients who would benefit from treatment with a CRHR1 antagonist.
Experiments were conducted with two different mouse lines of excessive central CRH secretion and their respective control littermates (CL). Mice of the CRH- COE CNS line are characterised by CRH-overexpression within the whole CNS, whereas mice of the Cor26 CRH line display a CRH-overexpression specific to CRH-ergic neurons of the CNS. Three different CRHRl antagonists were tested. While DMP-696 (bicyclic) and CP-316,311 (monocyclic) are class I CRH-Rl antagonists, SSR125543A (long off-rate, typical slow-tight binding inhibitor) belongs to class II CRH-Rl antagonists. DMP-696 and SSR125543A were applied to CRH-COE CNS mice (n DM p 6 96= 6/6 COE/CL; n SS Ri 2 5543= 6/5 COE/CL), while CP- 316,311 was tested in Cor26 CRH mice (n C p3 i6.3 i i= 5/3 Cor26/CL). In all cases, animals were left to recover from EEG/EMG-electrode implantation for two weeks, after which two days of baseline recording were initiated. Treatment with CRH-Rl antagonist or respective vehicle control commenced thereafter for five consecutive days. Antagonists were applied through the drinking water at a daily dose of
50mg/kg body weight. EEG and EMG recordings were manually scored as wake, non-REMS (NREMS), and REMS in four second epochs by an experienced evaluator.
As previously shown, CRH-COE CNS mice display significantly higher REMS activity under baseline condition as compared to controls. Chronic DMP-696 (50mg/kg/d DMP-696) treatment entails only a mild suppression of REMS in CL mice. However, DMP-696-treated CRH-COE CNS mice show a significant decrease in REMS activity beginning with treatment day two (P<0.05). The strongest suppression of REMS activity in CRH-COE CNS animals could be observed on treatment day three (Figure 2)· Comparable to DMP696 treatment, oral application of SSR125543A (50mg/kg/d) affected REMS levels in CRH-overexpressing mice. No effects of SSR125543 on REMS activity in control animals could be detected. In contrast, a significant suppression of REMS could be observed beginning with day two in CRH- overexpressing animals (P<0.035). Similar to DMP696 treatment, REMS
suppression in CRH-COE CNS mice never exceeded baseline REMS -levels of CL (Figure 3).
Application of CP-316,311 (Pfizer) in the Cor26 CRH mouse line showed no significant effect on REMS levels in CL animals (data not shown). Similarly, in CRH-overexpressing Cor26 CRH mice suppression in REMS apparently seemed weak. However, comparison of the area under the curve (AUC) within the light period of baseline and treatment day three showed a significant decrease (P=0.006) of REMS levels after CP-316,311 application (Figure 4). CRH is one of the major drivers of the stress response in the brain. Hyperactivity of the CRH system seems to be responsible for cognitive impairments, emotional responses, and behavioural changes which are typical for depression. One of those behavioural changes are sleep disturbances exemplified by REMS disinhibition. The link between CRH-overexpression and REMS level increases is evidenced by the mouse lines used in these experiments. Since CRH-overexpression in the Cor26 CRH mouse line is limited to CRH-ergic neurons, the net increase of CRH is lower when compared to the whole brain overexpression in CRH-COE CNS mice. As a result, the phenotype of increased REMS levels was less profound in Cor26 CRH mice as compared to CRH-COE CNS animals.
The main finding of this study is that the normalization of CRH -elicited sleep-EEG disturbances is striking when (1) different chemical classes of CRHRl antagonists are used and (2) different animal models for CRH-induced sleep-EEG changes that are typical for human depression are employed. REMS disinhibition is indicative of a central CRH dysfuntion (i.e. hyperactivity) and as such may serve as a biomarker for the identification of depressed patients where depression is caused by central CRH- hyperdrive. Normalization of the sleep pattern by application of different CRHRl antagonists could be shown in all of our experiments, employing different classes of CRHRl receptors and different animal models overexpressing centrally CRH.
Next Patent: USER-PROGRAMMABLE CAPSULE, DEVICE FOR PROGRAMMING CAPSULES AND BEVERAGE PREPARATION MACHINE