ROCSAN
A Multicentric Randomized Phase II/III Evaluating TSR-042 (Anti-PD-1 mAb) in Combination With Niraparib (Parpi) Versus Niraparib Alone Compared to Chemotherapy in the Treatment of Metastatic or Recurrent Endometrial or Ovarian Carcinosarcoma After at Least One Line of Chemotherapy