Molecular Effects of a Multi-carotenoids (MCS) New Agent on Prostate Cancer Chemoprevention

Many epidemiological studies have shown that nutrients or elements from tomato or other plants, including lycopene and multi-carotenoids, may reduce the risk of prostate cancer, especially those of lethal cancer. Studies have also shown that multi-carotenoids may reduce serum PSA levels in prostate cancer patients. MCS is a patented, multi-carotenoids-rich, purely botanic agent. The investigators' previous Phase II and III clinical trials (US FDA and TFDA, 600 subjects, studies finished, data in analysis) have shown that there were no MCS-related serious adverse events (SAE). MCS may relieve urinary symptoms in men with BPH and PSA was reduced in men with elevated PSA. So, the investigators are initiating a large multi-center phase II randomized study (MCS-8, N=702) in Taiwan, to study if MCS can reduce the risk of prostate cancer. High risk patients will be assigned to take oral daily 30, 15, and 0 (placebo) mg of MCS (1:1:1). The investigators will compare the cumulative prostate cancer incidence among groups and the change from baseline in serum carotenoids levels. (MCS-8-TWN-II Clinicaltrials.gov NCT02042807)