Regarding biochemical variables, the IGT&T2D group exhibited significantly higher glucose (p < 0.001), insulin (p < 0.01), HOMA (p < 0.05) and triglycerides and glucose index levels (p < 0.05), while showing a significantly lower QUICKI index (p < 0.01), ALT/AST ratio (p < 0.05) and adiponectin (p < 0.05) concentrations compared to the NG group. This evidence concerns the gene GPT and type 2 diabetes mellitus.