KLK3 and posterior cortical atrophy: Median age was 63 years (interquartile range [IQR] 60, 66) and 71 years (IQR 67, 75) for benign biopsies and PCa, respectively; median PSA was 5.8 ng/ml (IQR 4.5, 6.4), 6.4 ng/ml (IQR 5.4, 7.7); and median PSA density was 0.07 (IQR 0.06, 0.08), 0.09 (IQR 0.08, 0.10) for men with benign biopsy and men with PCa, respectively.