Catumaxomab

Overview
Catumaxomab (removab®) is a rat-murine hybrid monoclonal antibody and which it's used to treat some cancers such as platinum-refractory ovarian cancer, malignant ascites, and gastric cancer. It binds to antigen CD3 and is also trifunctional. It is in clinical trials in the United States currently and is used in Europe.

It basically works by linking your T-lymphocytes with the cancer cells.