Definition

A drug used to treat adults with Merkel cell carcinoma (a type of skin cancer) that has come back or has spread to other parts of the body. It is also being studied in the treatment of other types of cancer. Retifanlimab binds to a protein called PD-1, which is found on T cells (a type of immune cell). Retifanlimab may block PD-1 and help the immune system kill cancer cells. It is a type of monoclonal antibody and a type of immune checkpoint inhibitor. Also called Zynyz.