An increase in hepatocellular adenoma was reported in 300 mg/kg groups of both males and females in the carcinogenicity study in mice for 2 years (at the oral doses of 30, 100, and 300 mg/kg), while increase in hepatocellular adenoma was not reported in the carcinogenicity study in rats for 2 years (at the oral doses of 3, 7, 15, and 30 mg/kg).