African-American men have the highest risk of developing prostate cancer, compared all other races. A new study suggests that there are specific genes that may indicate aggressive prostate cancer in African-American men. The researchers believe that their results may partially explain the reason for ethnic disparities in prostate cancer. In the past, ethnic disparities in prostate cancer have been associated with socioeconomic and biologic factors. The study was recently published online in the journal Urologic Oncology.