A Study to Evaluate the Effect of Itraconazole on JNJ-56136379 in Healthy Adult Participants

An Open-label, Fixed-sequence, Drug-drug Interaction Study to Evaluate the Effect of Itraconazole on the Pharmacokinetics of JNJ-56136379 in Healthy Adult Participants

The main purpose of this study is to assess the effect of itraconazole at steady-state on a single-dose pharmacokinetic (PK) of JNJ-56136379 in healthy adult participants.

Inclusion Criteria:

• Healthy on the basis of physical examination, clinical laboratory tests, medical history, and vital signs performed at screening. If there are abnormalities, the participant may be included only if the investigator judges the abnormalities to be not clinically significant or to be appropriate and reasonable for the population under study. This determination must be recorded in the participant's source documents and initialed by the investigator
• Must not use nicotine-containing substances including tobacco products for at least 3 months prior to screening and during the study
• A woman of childbearing potential must have a negative highly sensitive serum pregnancy test (beta-human chorionic gonadotropin) at screening and a negative urine pregnancy test at Day -1 of the first treatment period
• Body mass index (weight kilogram [kg]/height^2 meter [m]^2) between 18.0 and 30.0 kg/m^2 (inclusive), and body weight not less than 50.0 kg
• Blood pressure (after the participant is supine for 5 minutes) between 90 and 140 millimeters of Mercury (mmHg) systolic, inclusive, and no higher than 90 mmHg diastolic. If blood pressure is out of range, up to 2 repeated assessments are permitted

Exclusion Criteria:

• History of cardiac arrhythmias (example [e.g.], tachycardia at rest), history of risk factors for Torsade de Pointes syndrome (e.g., hypokalemia, family history of long QT Syndrome) at screening
• Any evidence of heart block or bundle branch block at screening
• Any current, or history of, clinically significant skin disease at screening requiring intermittent or chronic treatment (at the investigator's discretion) such as, but not limited to, dermatitis, eczema, drug rash, psoriasis, food allergy, and urticaria
• Known allergies, hypersensitivity, or intolerance to JNJ-56136379 or itraconazole or its excipients at screening
• History of clinically significant drug allergy at screening such as, but not limited to, sulfonamides and penicillins, or drug allergy witnessed in previous studies with experimental drugs