Definition

A drug used with other drugs to treat certain types of follicular lymphoma and chronic lymphocytic leukemia. It is also being studied in the treatment of other types of cancer. Obinutuzumab binds to a protein called CD20, which is found on B cells (a type of white blood cell) and some types of leukemia and lymphoma cells. Obinutuzumab may block CD20 and help the immune system kill cancer cells. It is a type of monoclonal antibody. Also called Gazyva.