MAPKAPK5 and posterior cortical atrophy: To establish that MK5 is indeed important for cell motility, we tested a panel of PCa cell lines, including LNCaP, C4‐2B, PC3, DU145 and 22RV1 with the specific MK5 inhibitor GLPG0259 (Fig. 5 and Fig. S17) using the scratch repair assay via the IncuCyte.