Eisai R&d Management Co., Ltd.

Aki Nakatani

Eiji Inoue

Toshio Imai

Akio Yamada

Tomomi Kawakatsu

Maki Deguchi

Yuichi Ono

Shunsuke Ito

Toshifumi Hirayama

Ryota Taguchi

Provided is an anti-EphA4 antibody that can bind to EphA4 and enhance the cleavage of EphA4, as well as a pharmaceutical composition comprising the antibody as the active ingredient. A mouse anti-EphA4 antibody that has binding affinity towards EphA4 and can enhance the cleavage of EphA4 was obtained, and the sequence of the complementarity-determining region (CDR) of the mouse anti-EphA4 antibody was identified. Subsequently, the anti-EphA4 antibody of interest was obtained by producing a humanized antibody of the mouse anti-EphA4 antibody.

Anti-EphA4 antibody

It is intended to provide an anti-EphA4 antibody or an EphA4-binding fragment thereof which is capable of binding to EphA4 and inhibiting the binding between EphA4 and its ligand, and a pharmaceutical composition comprising the anti-EphA4 antibody or the EphA4-binding fragment thereof as an active ingredient. A mouse anti-EphA4 antibody having binding affinity for EphA4 was obtained, and the sequences of complementarity-determining regions (CDRs) of the mouse anti-EphA4 antibody were identified. This allowed for preparation of a humanized antibody comprising the CDR sequences of the mouse anti-EphA4 antibody in heavy chain variable region and light chain variable region.

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Kobe, Japan

Aki Nakatani