He et al. reported that miR-23b expression levels in prostate carcinoma (PCa) tissues was significantly correlated with that of peroxiredoxin 3 (PRDX3) and that miR-23b may be involved in the response of PCa cells to hypoxic stress, therefore gene therapy using miRNA mimics may be useful as PCa therapy [20]. The gene discussed is PRDX3; the disease is posterior cortical atrophy.