Neoadjuvant Durvalumab and Tremelimumab Plus Radiation for High Risk Soft-Tissue Sarcoma

The main purposes of this study are to evaluate the safety, tolerability, and efficacy of Durvalumab and Tremelimumab in combination with radiation prior to surgical resection of high-risk soft tissue sarcoma in the pelvis and extremities. Patients will receive the same radiation therapy and surgical care they would receive normally and with no change in timing or duration of each treatment. They will also receive two immunotherapy agents, Durvalumab and Tremelimumab, during radiation prior to surgery, and a single agent, Durvalumab, after surgery.