RecruitingDrug trialMC1R-targeted Alpha-particle Monotherapy and Combination Therapy Trial With Nivolumab in Adults With Advanced MelanomaIn this first-in human, phase I/IIa study, the safety and efficacy of \[212Pb\]VMT01, an alpha-particle emitting therapeutic agent targeted to melanocortin sub-type 1 receptor (MC1R) is being evaluated as a monotherapy and in combination with nivolumab in subjects with unresectable and metastatic melanoma.