KIDINS220 and posterior cortical atrophy: To explore whether miR-4638-5p may suppress CRPC development by inhibiting Kidins220 expression, we firstly examined the expression of Kidins220 in the 30 ADPC and 18 CRPC samples as well as PCa cell lines using qRT-PCR, we found that Kidins220 expression was significantly much higher in CRPC tissues compared with ADPC tissues (P = 3.10 × 10−7; Figure 4G), which was reversely correlated with miR-4638-5p in those two groups of clinical samples.