MAPK8IP2 and posterior cortical atrophy: The expression levels of MAPK8IP2 were detected by qRT–PCR, and we found that MAPK8IP2 mRNA expression levels were significantly higher in PCa cell lines (PC3, DU145, 22RV1, LNCAP, and VCAP) than in normal prostate epithelial cells (HPrEC and RWPE1) (Fig. 8A).