Immunotherapy is treatment that uses your body’s own immune system to help fight cancer.

Immunotherapy is a type of biological therapy in cancer treatment that helps your immune system fight cancer. The immune system is made up of white blood cells and organs and tissues of the lymph system that helps your body fight infections and other diseases. These treatments can either help the immune system attack the cancer directly or stimulate the immune system in a more general way.

Immunotherapy is an effective treatment for patients with certain types of cancer that have been resistant to chemotherapy and radiation treatment, and has also been approved as a first line of treatment in several cancers. It may be given alone or in combination with other cancer treatments.

One reason that cancer cells thrive is because they are able to hide from your immune system. Certain immunotherapies can mark cancer cells so it is easier for the immune system to find and destroy them. Other immunotherapies boost your immune system to work better against cancer.

Immunotherapy represents the most promising new cancer treatment approach since the development of the first chemotherapies in the 1940s.