Inclusion Criteria:  Male or female, 18 to 75 years of age Overweight or obese with a body mass index (BMI) ≥ 25 kg/m2 Presumed NASH based on clinical characteristics or prior liver biopsy ALT ≥ 43 IU/L for men and ≥ 28 IU/L for women MRI-cT1 value> 800 ms Written informed consent  Exclusion Criteria:  History or clinical evidence of chronic liver diseases other than NAFLD History or clinical evidence of cirrhosis, hepatic decompensation or other severe liver impairment History of liver transplant, or current placement on a liver transplant list Weight loss of > 5% total body weight within 3 months prior to Screening  Note: Other protocol-defined inclusion/exclusion criteria that apply