ANXA1 and posterior cortical atrophy: To evaluate if the pro-invasive role of ANXA1 in our PCa models is mediated by its ability to activate FPRs, as previously reported in pancreas and colon carcinomas [17, 40], we performed a matrigel invasion assay using an anti-ANXA1 blocking antibody and by stimulating or not DU145 and DU145R80 cells by administration of Ac2-26 peptide.