Overview Metformin And Longevity Status: Unknown status Trial end date: 2017-07-01 Target enrollment: Participant gender: Summary This is a randomized, placebo-controlled, double-blind, window of opportunity study investigating the biological mechanism of metformin in prostate cancer. Phase: Phase 4 Details Lead Sponsor: Guy's and St Thomas' NHS Foundation TrustCollaborator: King's College LondonTreatments: Metformin