Stereotactic Body Radiation Therapy, Tremelimumab and Durvalumab in Treating Participants With Recurrent or Metastatic Cervical, Vaginal, or Vulvar Cancers

This phase I trial studies how well stereotactic body radiation therapy works in combination with tremelimumab and durvalumab in treating participants with cervical, vaginal, or vulvar cancers that have come back (recurrent) or spread to other areas of the body (metastatic). Stereotactic body radiation therapy is a specialized radiation therapy that sends x-rays directly to the tumor using smaller doses over several days and may cause less damage to normal tissue. Immunotherapy with monoclonal antibodies, such as tremelimumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Durvalumab is a monoclonal antibody that may interfere with the ability of tumor cells to grow and spread. Giving stereotactic body radiation therapy, tremelimumab, and durvalumab may work better in treating participants with cervical, vaginal, or vulvar cancers.