In 27 suspected PCa patients with PSA data before PSMA PET/MRI, the positive rates were 0, 73, and 75% with PSA levels of <4 ng/ml, 4 ≤ PSA < 10 ng/ml, and PSA ≥ 10 ng/ml, respectively. This evidence concerns the gene KLK3 and posterior cortical atrophy.