RecruitingPhase 2Drug trialPhase II Trial of Ubamatamab Alone or in Combination With Cemiplimab in MUC16-Expressing SMARCB1-Deficient MalignanciesTo find out if ubamatamab, given by itself or in combination with cemiplimab, can help to control the disease in participants with renal medullary carcinoma (RMC) and epithelioid sarcoma (ES).