In comparison to those in the NG group, participants in the T2DM and pre-DM groups were more likely to be older, male, hypertensive, smokers, and CVD patients and had elevated levels of SBP, ALT, AST, BUN, GGT, TG, LCI, AIP, and RC, as well as decreased levels of HDL-C, compared to patients with normal blood glucose levels in the T2M and pre-DM groups. This evidence concerns the gene AIP and type 2 diabetes mellitus.