Overview Low Dose Naltrexone for Metastatic Melanoma, Castrate Resistant Prostate Cancer and Renal Cancer Status: Terminated Trial end date: 2013-10-01 Target enrollment: Participant gender: Summary will scientifically evaluate whether Low Dose Naltrexone (LDN) has activity in refractory solid tumors within the context of a phase II clinical study Phase: Phase 2 Details Lead Sponsor: Maria ConstantinouTreatments: Naltrexone