SLD, steatotic liver disease; COPD, chronic obstructive pulmonary disease; BMI, body mass index; CRP, C-reactive protein; AST, aspartate aminotransferase; ALT, alanine aminotransferase; ALP, alkaline phosphatase; GGT, gamma-glutamyltransferase; INR, international normalized ratio. The gene discussed is GPT; the disease is chronic obstructive pulmonary disease.