Among patients with type 2 diabetes mellitus (n = 120), 69 (57.5%) were receiving antihypertensive therapy, including angiotensin-converting enzyme (ACE) inhibitors or angiotensin II receptor blockers (ARBs) in 52 (43.3%) patients, calcium channel blockers (CCBs) in 28 (23.3%), beta-adrenergic blockers (beta-blockers) in 18 (15.0%), and diuretics in 14 (11.7%). This evidence concerns the gene ACE and diabetes mellitus.