Laboratory tests frequently show changes in liver damage markers, particularly alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyltransferase (GGT).6,8-9 In NAFLD, the ALT level is not correlated with the degree of histological activity and may be normal, even in the presence of advanced disease.9 The gene discussed is GPT; the disease is metabolic dysfunction-associated steatotic liver disease.