GGTLC1 and metabolic syndrome: AUROC, area under receiver operating characteristics curve; BMI, body mass index; WC, waist circumference; TAG, triglyceride; GGT, gamma‐glutamyl transpeptidase; T2DM, type 2 diabetes mellitus; AST, aspartate transaminase; ALT, Alanine transaminase; DM, diabetes; MetS, Metabolism syndrome; HDL, high density lipoproteins; WBC, white blood cells; BG, fasting blood glucose, BIL, total bilirubin; CV mortality, cardiovascular mortality; HCV, hepatitis C virus