The total PSA value mean was found to be 10.469 ± 11.6 ng/mL in the PCa patient group, 6.3705 ± 8 ng/mL in the BPH patient group, the prostate volume mean 67.75 ± 25 mL in the PCa patient group and 98.5 ± 42.8 mL in the BPH patient group. Here, KLK3 is linked to posterior cortical atrophy.