Immunotherapy helps treat cancer by supporting the body's immune system. It can restore, boost, or redirect the immune system.

Immunotherapy may use cells from a person's body, such as a type of white blood cell called a T cell. Or it may use proteins or bacteria that have been enhanced in the lab so they can help the immune system find and destroy the cancer cells.

Immunotherapy for cancer includes:

• Medicines, such as checkpoint inhibitors, cytokines, and monoclonal antibodies.
• Immune cell therapies, such as CAR T-cell therapy.
• Treatment vaccines, such as Sipuleucel-T.