Used in cancer immunotherapy research, particularly for ovarian cancer. Binds to the MUC16 antigen, which is overexpressed on the surface of ovarian tumor cells. Helps in the development of targeted therapies by enabling selective recognition and immune response modulation. Investigated for its role in active specific immunotherapy, where it may stimulate the body’s immune system to recognize and destroy cancer cells expressing MUC16. Also utilized as a reference standard in immunoassays and antibody-drug conjugate development.