A Study to Investigate the Safety, Tolerability and Pharmacokinetics of JNJ-64991524 in Healthy Participants

Study Overview
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Brief Summary
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The purpose of this study is to evaluate safety and tolerability of JNJ-64991524 compared with placebo after administration of single ascending oral doses of JNJ-64991524 (Part 1) and multiple ascending oral doses of JNJ-64991524 (Part 2) in healthy participants.

Official Title
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A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Single and Multiple Ascending Dose Study to Assess the Safety, Tolerability and Pharmacokinetics of JNJ-64991524 in Healthy Participants

Conditions
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Healthy

Intervention / Treatment
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* Drug: JNJ-64991524 Dose Level 1
* Drug: JNJ-64991524 Dose Level 2
* Drug: JNJ-64991524 Dose Level 3
* Drug: JNJ-64991524 Dose Level 4
* Drug: JNJ-64991524 Dose Level 5
* Drug: JNJ-64991524 Dose Level 6
* Drug: Placebo
* Drug: JNJ-64991524 Dose Level 7
* Drug: JNJ-64991524 Dose Level 8
* Drug: JNJ-64991524 Dose Level 9


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Weigh at least 50 kilogram (kg), and have a body mass index (BMI) of 18 kg/ meter (m)^2 to 30 kg/m^2, inclusive, at screening Be otherwise healthy on the basis of physical examination, medical history, vital signs, and 12-lead ECG performed at screening and Day-1. This determination must be recorded in the participant's source documents and initialed by the investigator Be otherwise healthy on the basis of clinical laboratory tests performed at screening and Day -1. If the results of the serum chemistry panel, including liver enzymes, white blood cell count and hematocrit, coagulation, or urinalysis are outside the normal reference ranges, the participant may be included only if the investigator judges the abnormalities or deviations from normal 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 confirmed initialed by the investigator Have the platelet count pretreatment clinical laboratory values not below the normal range during Screening and Day -1 A woman must have a negative serum pregnancy test (beta-human chorionic gonadotropin [beta-hCG]) at screening and a negative urine pregnancy test on Day -2 Exclusion Criteria: History of liver or renal insufficiency; significant cardiac, vascular, pulmonary, gastrointestinal, endocrine, neurologic, hematologic, rheumatologic, psychiatric, or metabolic disturbances Known allergies, hypersensitivity, or intolerance to JNJ-64991524 or its excipients History of severe allergic reaction, angioedema, or anaphylaxis to drugs or food Has a history of malignancy before screening. Exceptions are squamous and basal cell carcinomas of the skin and carcinoma in situ of the cervix, or a malignancy which is considered cured with minimal risk of recurrence Has a history of or is infected with human immunodeficiency virus (HIV [positive serology for HIV antibody]); tests positive for hepatitis B virus (HBV) infection; has antibodies to hepatitis C virus (HCV) at screening

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cohort 1:JNJ-64991524 Dose Level (DL) 1 or Placebo(SAD Part 1)<br>Participants will receive a single oral dose (Dose level 1) of either JNJ-64991524 or placebo capsules after an overnight fast (at least 10 hours) on Day 1 of Part 1. | Drug: JNJ-64991524 Dose Level 1<br>* Participants will receive JNJ-64991524 at a Dose Level 1 in SAD Part 1 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 2: JNJ-64991524 DL 2 or Placebo (SAD Part 1)<br>Participants will receive a single oral dose (Dose level 2) of either JNJ-64991524 or placebo capsules after an overnight fast (at least 10 hours) on Day 1 of Part 1. | Drug: JNJ-64991524 Dose Level 2<br>* Participants will receive JNJ-64991524 at a Dose Level 2 in SAD Part 1 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 3: JNJ-64991524 DL 3 or Placebo (SAD Part 1)<br>Participants will receive a single oral dose (Dose level 3) of either JNJ-64991524 or placebo capsules after an overnight fast (at least 10 hours) on Day 1 of Part 1. | Drug: JNJ-64991524 Dose Level 3<br>* Participants will receive JNJ-64991524 at a Dose Level 3 in SAD Part 1 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 4:JNJ-64991524 DL 4 or Placebo (SAD Part 1:Fasted-Fed)<br>Participants will receive a single oral dose (Dose level 4) of either JNJ-64991524 or placebo capsules in a fasted condition on Day 1 and fed condition, on Day 7. | Drug: JNJ-64991524 Dose Level 4<br>* Participants will receive JNJ-64991524 at a Dose Level 4 in SAD Part 1 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 5: JNJ-64991524 DL 5 or Placebo (SAD Part 1)<br>Participants will receive a single oral dose (Dose level 5) of JNJ-64991524 or placebo after an overnight fast (at least 10 hours) on Day 1 of Part 1. | Drug: JNJ-64991524 Dose Level 5<br>* Participants will receive JNJ-64991524 at a dose of Dose Level 5 in SAD Part 1 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 6: JNJ-64991524 DL 6 or Placebo (SAD Part 1)<br>Participants will receive a single oral dose (Dose level 6) of JNJ-64991524 or placebo after an overnight fast (at least 10 hours) on Day 1 of Part 1. | Drug: JNJ-64991524 Dose Level 6<br>* Participants will receive JNJ-64991524 at a Dose Level 6 in SAD Part 1 and MAD part 2 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|
| Experimental: Cohort 1: JNJ-64991524 DL 7 or Placebo (MAD Part 2)<br>Participants will receive an oral dose (Dose level 7) JNJ-64991524 or placebo capsules once daily for 14 days in fasted or fed condition in Part 2. Fasted/fed condition will be determined based on tolerability and pharmacokinetics (PK) from Part 1. | Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>Drug: JNJ-64991524 Dose Level 7<br>* Participants will receive JNJ-64991524 at a dose of Dose Level 7 in MAD Part 2 of study for 14 days.<br>|
| Experimental: Cohort 2: JNJ-64991524 DL 8 or Placebo (MAD Part 2)<br>Participants will receive an oral dose (Dose level 8) JNJ-64991524 or placebo capsules once daily for 14 days in fasted or fed condition in Part 2. Fasted/fed condition will be determined based on tolerability and PK from Part 1. | Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>Drug: JNJ-64991524 Dose Level 8<br>* Participants will receive JNJ-64991524 at a Dose Level 8 in MAD Part 2 of study for 14 days.<br>|
| Experimental: Cohort 3: JNJ-64991524 DL 9 or Placebo (MAD Part 2)<br>Participants will receive an oral dose (Dose level 9) JNJ-64991524 or placebo capsules once daily for 14 days in fasted or fed condition in Part 2. Fasted/fed condition will be determined based on tolerability and PK from Part 1. | Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>Drug: JNJ-64991524 Dose Level 9<br>* Participants will receive JNJ-64991524 at a Dose Level 9 in MAD Part 2 of study for 14 days.<br>|
| Experimental: Cohort 4: JNJ-64991524 DL 6 or Placebo (MAD Part 2)<br>Participants will receive an oral dose (Dose level 6) of JNJ-64991524 or placebo capsules once daily for 14 days in fasted or fed condition in Part 2. Fasted/fed condition will be determined by tolerability and PK from Part 1. | Drug: JNJ-64991524 Dose Level 6<br>* Participants will receive JNJ-64991524 at a Dose Level 6 in SAD Part 1 and MAD part 2 of study.<br>Drug: Placebo<br>* Participants will receive matching placebo in all cohorts on Day 1 in Part 1 and Part 2 of the study.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Part 1: Single Ascending Dose (SAD): Number of Participants with Treatment Emergent Adverse Events (AEs) as a Measure of Safety and Tolerability | An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. Treatment-emergent were events between administration of study drug and up to Day 20 that were absent before treatment or that worsened relative to pre-treatment state. | Up to Day 20 | 
| Part 2: Multiple Ascending Dose (MAD): Number of Participants with Treatment Emergent Adverse Events as a Measure of Safety and Tolerability | An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. Treatment-emergent were events between administration of study drug and up to Day 28 that were absent before treatment or that worsened relative to pre-treatment state. | Up to Day 28 | 
| Number of Participants with Abnormalities in Vital Signs, Physical Examinations, Electrocardiogram (ECG), Cardiac Telemetry and Clinically Significant Laboratory Findings | Number of participants with abnormalities in vital signs, physical examinations, ECG, cardiac telemetry and clinically significant laboratory findings will be measured. | Pre-dose, up to Day 20 (SAD) and up to Day 28 (MAD) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Plasma Concentration of JNJ-64991524 | Plasma concentration assessment will be done to characterize the pharmacokinetics (PK) of JNJ-64991524. | Pre-dose, up to Day 20 (SAD) and up to Day 28 (MAD) |