Abstract: Breast cancer cells lacking ER protein expression, PgR protein expression and/or showing absence of HER2 protein over-expression (i.e., triple-negative breast cancer cells, basal-like) can be efficiently targeted with an anti-KAAG1 antibody and killed upon delivery of a therapeutic moiety. Antibodies and antigen binding fragments that specifically binds to KAAG1 may thus be used for the, detection and therapeutic treatment of breast cancer cells that are negative for at least one of these markers. The use of antibody conjugates in the treatment of triple-negative breast cancer and/or basal-like breast cancer is disclosed herein.

Abstract: Novel antibodies and antigen binding fragments that specifically bind to KAAG1 and which may be used in the treatment, detection and diagnosis of cancer comprising KAAG1-expressing cells are disclosed herein. Cells expressing the antibodies and antigen binding fragments as well as methods of detecting and treating cancer using the antibodies and fragments are also disclosed. Cancer indications which may benefit from such treatment or detection include ovarian cancer, renal cancer, lung cancer, colorectal cancer, breast cancer, brain cancer, and prostate cancer, as well as melanomas.

Abstract: Novel monoclonal antibodies that specifically bind to KAAG1 are described. In some embodiments, the antibodies block the biological activity of KAAG1 and are useful in composition in certain cancers, more particularly in cancers that have increased cell surface expression of KAAG1, such as ovarian, renal, lung, colorectal, breast, brain, and prostate cancer, as well as melanoma. The invention also relates to cells expressing the monoclonal antibodies and antigen binding fragments such as humanized and chimeric antibodies. Additionally, methods of detecting and treating cancer using the antibodies and fragments are also disclosed.

Abstract: Novel antibodies and antigen binding fragments that specifically bind to KAAG1 and which may be used in the treatment, detection and diagnosis of cancer comprising KAAG1-expressing cells are disclosed herein. Cells expressing the antibodies and antigen binding fragments as well as methods of detecting and treating cancer using the antibodies and fragments are also disclosed. Cancer indications which may benefit from such treatment or detection include ovarian cancer, renal cancer, lung cancer, colorectal cancer, breast cancer, brain cancer, and prostate cancer, as well as melanomas.