1.	A Trial of PROSCAR (Finasteride) Versus Placebo in Men With an Initial Negative Prostate Biopsy Phase: Phase III Type: Diagnostic Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 07-0499-B, NCT00542243
2.	Selenomethionine and Finasteride Before Surgery or Radiation Therapy in Treating Patients With Stage I or Stage II Prostate Cancer Phase: Phase II Type: Biomarker/Laboratory analysis, Treatment Status: Active Age: 18 and over Sponsor: Other Protocol IDs: CDR0000611962, RPCI I 104607, I 104607, NCT00736645
3.	High Risk Prostate Cancer Prevention Study Phase: No phase specified Type: Biomarker/Laboratory analysis, Prevention, Tissue collection/Repository Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 12052, NCT01174953
4.	Finasteride Challenge Phase: No phase specified Type: Prevention Status: Active Age: 55 and over Sponsor: NCI, Other Protocol IDs: ROI10-352, R01CA138627, NCT01296672
5.	Feasibility of Hormones and Radiation for Intermediate or High Risk Prostate Cancer Phase: No phase specified Type: Treatment Status: Active Age: 70 and over Sponsor: Other Protocol IDs: 10-625-A, NCT01342367