GSTM1 and metabolic dysfunction-associated steatotic liver disease: In univariate analysis, BMI ≥ 27 kg/m2; metformin usage; and serum GOT, GPT, hemoglobin (Hb), log-formed TG, and isovalerate levels were significantly and positively correlated with an elevated risk of moderate to severe NAFLD in T2D patients (Table 2).