To determine whether miR-518f-5p is involved in cancer-related processes involving CD9, miR-518f-5p mimic was transiently transfected into non-tumorigenic RWPE1 and metastatic DU145 prostate cancer cells, and their proliferative, migratory and adhesive capacity assessed post-transfection. The gene discussed is CD9; the disease is Familial prostate cancer.