A Study of Bomedemstat (MK-3543) in Participants With Mild or Moderate Hepatic Impairment (MK-3543-023)

Inclusion Criteria The main inclusion criteria include but are not limited to the following: * Is a non-smoker or is a moderate smoker for at least 3 months prior to dosing Participants with Mild and Moderate HI * Is classified as having either mild HI (Group 1) or moderate HI (Group 2) score on the Child-Pugh scale ranging from 5 to 6 (mild) or 7 to 9 (moderate) * Has a diagnosis of chronic (\> 6 months), stable (no acute episodes of illness within the previous 2 months due to deterioration in hepatic function) hepatic insufficiency with features of cirrhosis due to any etiology Healthy Control Participants: * Must match the mean age (± 15 years) of participants with mild HI and moderate HI * Must match the mean body-mass index (BMI) (± 25%) of participants with mild HI (Group 1) and moderate HI * Must match the sex ratio (±2) of participants in each HI group, separately Exclusion Criteria The main exclusion criteria include but are not limited to the following: All Participants * History of cancer (malignancy) * Female participants of childbearing potential * Is positive for Hepatitis C virus (HCV) * Is positive for Hepatitis B surface antigen (HBsAg) * Is positive for human immunodeficiency virus (HIV) Participants with Mild and Moderate HI * Has any significant arrhythmia or conduction abnormality * Severe complications of liver disease within the preceding 3 months * Primary biliary cholangitis or biliary obstruction * Has a history of a recent variceal bleed…