A Study to Evaluate the Efficacy and Safety of Pegozafermin in Participants With Compensated Cirrhosis Due to MASH

Key Inclusion Criteria: * Males or non-pregnant females aged between 18 and 75 years (inclusive) at time of signing the informed consent form (ICF). * Participants must have type 2 diabetes mellitus diagnosed at least 3 months before screening or at least 2 metabolic risk factors. * Biopsy-confirmed fibrosis stage F4 MASH (NASH Clinical Research Network (CRN) system) with compensated cirrhosis. * Body mass index (BMI) at screening ≥25.0 (≥23.0 for Asian participants) and \<50.0 kilograms (kg)/meters squared (m\^2). Key Exclusion Criteria: * Liver disorder other than MASH. * History or evidence of hepatic decompensation. * History or evidence of hepatocellular carcinoma. * Have type 1 diabetes mellitus or poorly controlled type 2 diabetes mellitus. * ALT or aspartate aminotransferase (AST) ≥250 units per liter (U/L). * Participants taking vitamin E (\>400 international units \[IU\]/day) must be on stable dose for at least 6 months prior to screening. Other protocol-defined inclusion and exclusion criteria may apply.