No statistically significant differences existed between the patients with low and normal ABI values regarding sex, comorbid conditions with hypertension, the use of anti-hyperlipidemic medications, or the anti-diabetic medications usage, such as statins, fibrates, metformin, sulfonylureas, dipeptidyl peptidase-4 inhibitors, and insulin. The gene discussed is DPP4; the disease is hypertensive disorder.