Immunotherapy, also called biologic therapy, is a type of cancer treatment that boosts the body's natural defenses to fight cancer. It uses substances made by the body or in a laboratory to improve or restore immune system function.
1. Immune checkpoint therapy helps cancer-fighting immune cells, called T cells, mount a longer-lasting response against the cancer. Eg Pembrolizumab, Nivolumab, Atezolizumab, Ipilimumab
2. Adoptive cellular therapy increases the number and/or effectiveness of immune cells, usually T cells, which improves the power of the immune response against the cancer. There are three main types of adoptive cellular therapy:
3. Cancer vaccines help the body recognize cancer cells and stimulate the immune system to destroy them. Eg Sipuleucel-T in prostate cancer. Cancer vaccines usually contain one of the following:
4. Cytokine therapy relies on proteins called interferons and interleukins to trigger an immune response. Interleukin-2 (IL-2) is used to treat kidney cancers and melanomas that have spread to other regions of the body. Interferon alpha (IFN-alpha) is currently being used to treat melanoma, kidney cancer and certain leukemias and lymphomas. These cytokine treatments are also being combined with other types of immunotherapies to increase their effectiveness.