RecruitingBiological interventionA Study of TRK-950 in Patients With Advanced Solid TumorsPart 1 • To determine the safety and tolerability of TRK-950 in patients with advanced solid tumors Part 2 • To determine the safety and tolerability of TRK-950 in combination with nivolumab(NIVO) in patients with advanced solid tumors eligible for NIVO therapy Part 3 • To determine the efficacy of TRK-950 in patients with advanced/recurrent unresectable melanoma, who received prior chemotherapy with dacarbazine(DTIC) and for whom no standard therapy exists