Our results showed that miR‐15b overexpression not only decreased the expression of RECK in PCa cells at the mRNA (Fig. 3C) and protein levels (Fig. 3D), but also reduced the luciferase activity of wide type 3` UTR of RECK but had no effect on that of mutation 3` UTR of RECK (Fig. 3E). This evidence concerns the gene RECK and posterior cortical atrophy.