TGM4 and posterior cortical atrophy: We further validated the DEGs, such as ITGBL1, KRT15, TGM4, and HOXA7 genes, with quantitative real-time polymerase chain reaction (qRT-PCR) in the prostate cell lines (PCa Vcap, PC3, DU-145, LNcap, 22RV1 cells, and the normal human prostate epithelial cells HPEpiC cells) and primary tumors (Figures 2 and 3).