ANTIBODY, PHARMACEUTICAL COMPOSITION USED FOR TREATMENT OF BREAST CANCER, TUMOR TEST METHOD, AND REAGENT FOR TESTING TUMOR

摘要

Provided are an antibody and a pharmaceutical composition, both of which are effective for the treatment of breast cancer, particularly a triple-negative case of breast cancer. An antibody capable of binding specifically to a extracellular domain of EphA10 is allowed to act. An example of the extracellular domain is a fibronectin domain. The EphA10 positive ratio is about 67% in a triple-negative case. In a biological sample separated from a living body, EphA10 can be detected as a tumor marker for stomach cancer, prostate cancer or colorectal cancer.