Overview Pembrolizumab and All-Trans Retinoic Acid Combination Treatment of Advanced Melanoma Status: Active, not recruiting Trial end date: 2022-08-01 Target enrollment: Participant gender: Summary This is a Phase I/Ib investigator-initiated open label of the combination of VESANOID and pembrolizumab treatment. Phase: Phase 1/Phase 2 Details Lead Sponsor: University of Colorado, DenverCollaborator: Merck Sharp & Dohme Corp.Treatments: PembrolizumabTretinoin