NCT01497431 2014-11-26Se-Methyl-Seleno-L-Cysteine or Selenomethionine in Preventing Prostate Cancer in Healthy ParticipantsNational Cancer Institute (NCI)Phase 1 Completed66 enrolled
NCT00217516 2012-02-09Selenium in Treating Patients Who Are Undergoing Brachytherapy for Stage I or Stage II Prostate CancerRoswell Park Cancer InstitutePhase 1 Completed18 enrolled