Patients with MPV > 9.4 fL had a higher prevalence of previous stroke of transient ischemic attack (TIA) (OR = 1.706 95%CI 1.004-2.901), a higher CHADS2 score and were more frequently medicated with angiotensin converting enzyme inhibitors or angiotensin-II receptor blockers. This evidence concerns the gene ACE and transient ischemic attack.