DPP4 and atherosclerosis: The clinical data also showed a positive and significant correlation (r = 0.458, p < 0.01; r = 0.427, p < 0.05; r = 0.430, p < 0.01; r = 0.330, p < 0.05) between atherosclerosis, DM, DPP-4 inhibitors users, and FBG, respectively.