“…19 A number of longitudinal studies have consistently shown that NAFLD, diagnosed by serum levels of liver enzymes, 20,21 surrogate scores (eg, fatty liver index calculated from BMI, GGT, triglyceride, and waist circumference), 22,23 imaging methods (eg, ultrasonography), 24,25 or International Classification of Diseases codes, 26 is significantly associated with incident AF as assessed by ECG, Holter monitoring, or medical record information, independent of several other AF risk factors, despite a few exceptions. [27][28][29] Two cohort studies reported that elevated levels of ALT, AST (aspartate aminotransferase), or GGT were significantly associated with an increased incidence of AF in the general population, and the results remained significant after multivariate adjustment. 20,21 Besides the adjustment for several known cardiometabolic risk factors, the study by Sinner et al 20 further adjusted for cardiac murmur and PR interval, whereas the study by Alonso et al 21 further adjusted for coronary heart disease (CHD), heart failure, and NT-proBNP (N-terminal pro-brain natriuretic peptide).…”