The observation that miR-7 and miR34a are inversely correlated to Axl levels in both PCa cell lines and clinical tissues, together with our finding that DHA treatment leads to inhibition of Axl and induction of miR-7 and miR-34a, persuaded us to determine whether treatment of mice with DHA affects levels of miR-7 and miR-34a in vivo. This evidence concerns the gene AXL and posterior cortical atrophy.