A strategic decision was made to discontinue the study. The decision was not based on a safety concern.

The main purpose of the study is to evaluate the pharmacokinetc (PK) of a single oral dose of JNJ-53718678 in participants with varying degrees of impaired hepatic function (mild, moderate, and severe) when compared with participants with normal hepatic function.

Inclusion Criteria:

• A woman of childbearing potential must have a negative serum (beta human chorionic gonadotropin [beta-HCG]) test at screening and on Day -1 of the treatment period
• Contraceptive use by female participants or women should be consistent with local regulations regarding the use of contraceptive methods for participant participating in clinical studies
• If a woman, must agree not to donate eggs (ova, oocytes) for the purposes of assisted reproduction during the study and for 30 days after receiving the study drug
• A male participant must agree not to donate sperm for the purpose of reproduction from Day -1 of the study and for a minimum of 90 days after receiving the study drug
• For participants with mild, moderate or severe hepatic impairment: the participants must have a total Child-Pugh score of 5 to 6, inclusive (mild); or 7 to 9, inclusive (moderate); or 10-15, inclusive (severe). The Investigator will determine degree of hepatic impairment

Exclusion Criteria:

• Known allergies, hypersensitivity, or intolerance to JNJ-53718678 or its excipients
• Donated blood or blood products or had substantial loss of blood (more than 500 milliliter [mL]) within 90 days before the administration of study drug or intention to donate blood or blood products during the study
• Received an experimental drug (including investigational vaccines) or used an experimental medical device within 30 days or within a period less than 5 times the drug's half-life, whichever is longer, before the dose of the study drug is scheduled
• Any condition for which, in the opinion of the investigator, participation would not be in the best interest of the participant or that could prevent, limit, or confound the protocol-specified assessments
• Preplanned surgery or procedures that would interfere with the conduct of the study

The data sharing policy of the Janssen Pharmaceutical Companies of Johnson & 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