PHARMACEUTICAL COMPOSITION FOR TREATMENT AND/OR PREVENTION OF CANCER

摘要

The present invention discloses an antibody that targets a cancer antigen protein expressed specifically on the surface of cancer cells and the application of the antibody in a treatment and/or preventative agent for said cancer. Specifically disclosed are: an antibody or a fragment thereof said antibody being immunologically reactive with a partial polypeptide of CAPRIN 1 comprising the amino acid sequence represented by SEQ ID NO: 5 or an amino acid sequence having 80% or more sequence identity to the amino acid sequence represented by SEQ ID NO: 5; and a pharmaceutical composition for the treatment and/or prevention of cancer said pharmaceutical composition being characterized by containing as an active ingredient the antibody or a fragment thereof.