Overview Effects of a Genistein Concentrated Polysaccharide (GCP) for Prostate Cancer on Active Surveillance. Status: Completed Trial end date: 2007-12-01 Target enrollment: Participant gender: Summary Genistein Combined Polysaccharide (GCP) may play a role as a secondary chemopreventive agent in the treatment of localized prostate cancer. Phase: Phase 2/Phase 3 Details Lead Sponsor: University of California, DavisTreatments: Genistein