FT3 to FT4 Ratio is Associated with Non-Alcoholic Steatohepatitis and Significant Fibrosis in Euthyroid Subjects with NAFLD

Haibo XueJinming Wu


Background & Aims: Studies on the relationship between thyroid function and non-alcoholic fatty liver disease (NAFLD) among euthyroid subjects had shown inconsistent results. Objective of the present study was to exploring the independent relationship between thyroid function parameters and nonalcoholic steatohepatitis (NASH), significant fibrosis (SF) respectively after adjusting other well-identified risk factors.Method: This study enrolled 307 patients with biopsy-proven NAFLD. Thyroid dysfunction defined as serum thyroid-stimulating hormone > 4.5 mIU/l or < 0.5 mIU/l and/ or free thyroxine > 14.41 pmol/l or < 7.86 pmol/l.Results: Stepwise regression analysis showed that the fT3/fT4 ratio, an optimal thyroid function parameter, was associated with NASH and SF in euthyroid subjects with NAFLD. After multivariable analysis, the fT3/fT4 ratio (per 0.1 change) showed significant correlation with NASH (OR 2.03(1.33, 3.11), P = 0.001) and SF (OR 2.11(1.28, 3.46), P = 0.003). When ratio was stratified by quartiles (Q1-Q4) as a categorical variable, the results still significant (Q4 versus Q1 (OR for NASH 4.29(1.68, 10.91), P = 0.002; for SF 4.63(1.49, 14.43), P = 0.008, all P for linear trend < 0.05). The prevale...Continue Reading

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