There are six patient cohorts which are being recruited to the Prostate Clinical Follow-up Core in support of the Specialized Program of Research Excellence (SPORE). The six groups are: 1. High-risk radical prostatectomy patients, 2. Primary external beam radiotherapy patients, 3. Primary prostate brachytherapy patients, 4. Hormone refractory prostate cancer patients, 5. Active Surveillance. 6. Prostate biopsy patients. The inclusion criterion for group 6 is that the patient is scheduled to undergo a prostate biopsy for the purposes of definitive prostate cancer diagnosis. There are no exclusion criteria for group 6.