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Title:
THERAPEUTIC AGENT COMPRISING HUMANIZED ANTI-EPIREGULIN ANTIBODY AS ACTIVE INGREDIENT FOR NON-SMALL-CELL LUNG CARCINOMA EXCLUDING ADENOCARCINOMA
Document Type and Number:
WIPO Patent Application WO/2014/208482
Kind Code:
A1
Abstract:
The present inventors succeeded in producing: an anti-Epiregulin antibody exhibiting a cross-species reactivity between a non-human animal crab-eating monkey and a human animal; an anti-Epiregulin antibody with suppressed chemical decomposition; an anti-Epiregulin antibody having a lowered isoelectric point; an anti-Epiregulin antibody having an elevated thermal denaturation midpoint temperature; and an anti-Epiregulin antibody having a reduced amount of aggregates, by appropriately substituting an amino acid residue in the variable region sequence of a humanized EP27 antibody that is capable of exhibiting a cytotoxic activity and neutralization activity on a cancer cell, said cancer cell expressing human Epiregulin, to thereby inhibit the proliferation of the cancer cell. Also, the present inventors succeeded in creating a therapeutic agent for non-small-cell lung carcinoma excluding adenocarcinoma, said therapeutic agent comprising one of the aforesaid antibodies as an active ingredient.

Inventors:
SUZUKI MASAMI (JP)
KATO ATSUHIKO (JP)
TAKEIRI ETSUKO (JP)
HASHIMOTO ERI (JP)
OUCHI KAORI (JP)
SATOH KENNICHI (JP)
Application Number:
PCT/JP2014/066512
Publication Date:
December 31, 2014
Filing Date:
June 23, 2014
Export Citation:
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Assignee:
CHUGAI PHARMACEUTICAL CO LTD (JP)
MIYAGI CANCER CT RES INST (JP)
International Classes:
A61K39/395; A61P35/00; A61P43/00; C07K16/30; C07K16/46; C12N15/09; C12P21/08
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Attorney, Agent or Firm:
HARUNA, Masao et al. (JP)
Masao Haruna (JP)
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