NAFLD diagnosis contains histological tests, ultrasonography and laboratory enzymatic measurements consisting of alanine aminotransferase (ALT), aspartate transaminase (AST), and γ-Glutamyl transpeptidase (GGT) in order to evaluate liver functions (Festi et al., 2013 ▶). The gene discussed is GPT; the disease is metabolic dysfunction-associated steatotic liver disease.