The purpose of this study is to evaluate the pharmacokinetics (PK) of a single oral dose of JNJ-42847922 in adult participants with hepatic impairment when compared to healthy participants with normal hepatic function.

Inclusion Criteria:

All

• Be a man or woman 18 to 79 years of age, inclusive Participants with normal hepatic function
• Generally healthy
• Must not exceed upper limit of normal limits for serum bilirubin, transaminase levels, albumin levels, prothrombin time (PT), and International Normalized Ratio (INR) when measured at screening and Day 1 Participants with (Mild, Moderate or Severe) hepatic impairment
• Medically stable
• Total Child-Pugh score of 5 or 6, inclusive (mild); or 7 to 9, inclusive (moderate); or 10 to 15, inclusive (severe) as determined by the investigator
• Stable hepatic function during screening and those measured on Day 1
• Stable renal function

Exclusion Criteria:

Participants with normal hepatic function

• Hepatitis B surface antigen (HBsAg) or hepatitis C antibodies at screening Participants with (Mild, Moderate or Severe) hepatic impairment
• Severe ascites or pleural effusion; prothrombin time greater than (>)18 seconds; evidence of progressive liver disease within the previous 4 weeks, as indicated by changes in hepatic transaminases, alkaline phosphatase, and gamma-glutamyl transferase
• History of hepatopulmonary syndrome, hydrothorax, or significant hepatorenal syndrome
• Acute or exacerbating hepatitis, fluctuating or rapidly deteriorating hepatic function as indicated by widely varying or worsening of clinical and/or laboratory signs of hepatic impairment in the judgment of either the investigator or the sponsor's medical monitor
• Clinically significant laboratory findings except as related to hepatic impairment

The data sharing policy of the Janssen Pharmaceutical Companies of Johnson and Johnson is available at www.janssen.com/clinical-trials/transparency.

As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu