The risk score for predicting DFS of each PCa patient was calculated as follows: Risk score = NFATC1 × 0.234 + ARG1 × 0.001 + DNMT3B × 0.315 − NR3C1 × 0.025 + RXRB × 0.105 + HPRT1 × 0.033 + SI × 0.037. This evidence concerns the gene HPRT1 and posterior cortical atrophy.