PIK3IP1 and posterior cortical atrophy: MiR-32 is an AR-regulated miRNA and it contributes to PCa cell growth and progression by blocking the expression of the tumor suppressor genes phosphoinositide-3-kinase interacting protein 1 (PIK3IP1) and B-cell translocation gene 2 (BTG2), and favoring the PI3K/AKT/mTOR pathway [84].