In men having PCa in group 3, their median age, BMI, and PSA was 61 (IQR: 6) (non-PCa: 61 (IQR: 8); p = 0.254, Mann–Whitney U test) years old, 24.11 (IQR: 4.90) (non-PCa: 24.74 (IQR: 6.49); p = 0.739, Mann–Whitney U test) kg/m2, and 10.12 (IQR: 3.44) (non-PCa: 7.1 (IQR: 5.4); p = 0.007, Mann–Whitney U test) ng/mL, respectively. Here, KLK3 is linked to posterior cortical atrophy.