These parameters included age, serum lipids (total cholesterol and triglycerides), kidney function (creatinine), liver enzymes indicating hepatocyte damage (alanine aminotransferase), enzymes indicating cholestasis (total bilirubin), blood glucose, uric acid, serum iron, nutritional status (MNA-SF and GNRI), comorbidities (CCI) and BUN/albumin (BAR). This evidence concerns the gene GPT and cholestasis.