RecruitingPhase 2Combination productTrial of Selumetinib and Bromodomain Inhibitor With Durvalumab for SarcomasA multi-institutional open-label phase 1/2 trial of selumetinib in combination with ZEN-3694 and durvalumab in refractory/unresectable sarcomas including MPNST. The phase 1 portion will be separated in two parts and will be open to all patients with refractory/relapsed sarcomas. The phase 2 portion will be for patients with refractory/unresectable NF1-associated MPNST.