This is a Phase 2/3, multi-arm, multi-stage, open-label study of human leukocyte antigen (HLA)-A*02:01 negative participants with metastatic uveal melanoma (MUM) who will be randomized to receive either IDE196 + crizotinib or investigator’s choice of treatment (pembrolizumab, ipilimumab + nivolumab, or dacarbazine).