Moreover, our study found that high ALT values were tightly associated with a high risk of MAFLD (OR = 2.39, 95% CI: 2.26–2.52), suggesting that the ALT biomarker is an important reference for screening MAFLD, although evidence showing that ALT values could be regarded as the diagnostic standard for NAFLD to some extent is controversial [36–38]. The gene discussed is GPT; the disease is metabolic dysfunction-associated steatotic liver disease.