In a study among 276 Black men with no diagnosis of prostate cancer, it was found that “men who utilized health systems with a prostate cancer screening policy had high percentages of PSA and DRE (63.3%), PSA only (70.9%) and DRE only (81.7%)” and concluded that physicians who aggressively promote prostate cancer prevention among Black men, combined with institutional screening policy, highly increase early detection within this population group [12]. This evidence concerns the gene KLK3 and prostate cancer.