PD-L1 expression was found to be correlated with the expression of 14 of these FRGs, namely, DUSP1, ATF3, NFE2L2, TP63, CAV1, and ACSL3, as demonstrated in Fig. 2E. In PCa patients, Fig. 2F illustrates a marked decrease in PD-L1 expression in comparison to the normal tissue. This evidence concerns the gene CD274 and posterior cortical atrophy.