To further dissect the molecular mechanisms of how AR-modulated circRNA-ARC1/miR-125b-2-3p/miR-4736 signaling can alter the PCa vs. BCa cell invasion, we surveyed those genes related to PCa vs. BCa metastasis [35, 36] and their potential linkages to these miRNAs. The gene discussed is CDH1; the disease is posterior cortical atrophy.