RecruitingPhase 2Drug trialPhase 2 Trial of Zanzalintinib and Pembrolizumab in Select Subtypes of Advanced/Metastatic Soft-tissue SarcomaTo learn if zanzalintinib and pembrolizumab can help to control select subtypes of advanced/metastatic soft-tissue sarcoma (UPS, MFS, HGPS, and HGUS