A multivariate analysis showed that the occurrence of ALT abnormalities at the EOT was significantly associated with pegylated interferon (PEG-IFN) alfa-2a (odds ratio [OR], 2.24; 95% confidence interval [CI], 1.45-3.45; P<0.001), baseline fatty liver (OR, 1.76; 95% CI, 1.16-2.76; P = 0.007), and baseline liver cirrhosis (OR, 2.35; 95% CI, 1.35-4.09; P = 0.002).