Efficacy and Safety of MT-3995 in Patients With Non-Alcoholic Steatohepatitis(NASH)

Inclusion Criteria: * Subjects diagnosed with NASH before randomization * Subjects who conducts diet or exercise therapy at the beginning of run in period. * Subjects who has given full and adequate information of the protocol and with written informed consent Exclusion Criteria: * Subjects with hepatic failure or previously diagnosed with hepatic cirrhosis * Subjects with alcohol dependence or previously diagnosed with alcohol dependence * Subjects with other chronic liver disease (e.g., primary sclerosing cholangitis, alcoholic liver damage, hemochromatosis, Wilson's disease) * Presence, history, or family history of long QT syndrome or Torsades de Pointes * Subjects with heart failure (New York Heart Association Class III-IV)