A Study to Evaluate the Effect of Multiple Doses of JNJ-56021927 on the Pharmacokinetics of Multiple Cytochrome P450 and Transporter Substrates in Participants With Castration-Resistant Prostate Cancer

June 4, 2026 updated by: Aragon Pharmaceuticals, Inc.

Drug-drug Interaction Study to Evaluate the Effect of Multiple Doses of JNJ-56021927 on the Pharmacokinetics of Multiple Cytochrome P450 and Transporter Substrates in Subjects With Castration-Resistant Prostate Cancer

The purpose of this study is to evaluate the effects of repeat dosing of JNJ-56021927 on the pharmacokinetics for single-dose multiple cytochrome P450 (CYP450) enzymes (CYP3A4, CYP2C9, CYP2C19, CYP2C8) and transporter (P-gp and BRCP) substrates in participants with castration-resistant prostate cancer (CRPC).

Study Overview

Detailed Description

This is a Phase 1, multicenter, open-label study in participants with CRPC. The study will consist of a Screening Phase to determine eligibility, a Pretreatment Phase, a Treatment Phase, and a Follow-up Phase. The study is designed to estimate the magnitude of the effects of JNJ-56021927 on the pharmacokinetics of probe substrates. In vitro studies have indicated that JNJ-56021927 and its active metabolite JNJ-56142060 (M3) have the potential to affect multiple cytochrome P450 (CYP) enzymes (CYP3A4, CYP2C9, CYP2C19, and CYP2C8) and drug transporters proteins (P-glycoprotein [P-gp] and breast cancer resistance protein [BRCP]) via inhibition or induction. In human hepatocytes, JNJ 56021927 and JNJ-56142060 (M3) were found to be inducers of CYP3A4. The induction of CYP3A4 suggests that JNJ-56021927 and M3 will induce other CYP isozymes and drug transporters (eg, CYP2C and P-gp via activation of pregnane X receptor). The study is designed to confirm the in vivo significance of these non-clinical findings.

Study Type

Interventional

Enrollment (Actual)

23

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Chisinau, Moldova
      • Barcelona, Spain
      • Seville, Spain

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0, 1, or 2
  • Adenocarcinoma of the prostate
  • Participants with non-metastatic castration-resistant prostate cancer (NM-CRPC) or metastatic castration-resistant prostate cancer (mCRPC), who in the opinion of the investigator may benefit from treatment with JNJ-56021927
  • Surgically or medically castrated, with testosterone levels of <50 nanogram per deciliter (ng/dL)
  • If the participant is being treated with a gonadotropin-releasing hormone (GnRHa) (ie, participant who has not undergone bilateral orchiectomy), then this therapy must have been initiated at least 4 weeks prior to the Cycle 1 Day 1 visit and must be continued throughout the study
  • Adequate bone marrow and organ function defined as: Hemoglobin (>=9.0 g/dL, independent of transfusion or growth factor support within the prior 7 days); Absolute neutrophil count (>=1000/mm^3 independent of growth factor support within the prior 7 days); Platelet count (>=75,000/mm^3 independent of transfusion or growth factor support within the prior 7 days); Serum albumin (>=3.0 g/dL); Serum creatinine (<=1.5*upper limit of normal (ULN) or calculated creatinine clearance >=50 mL/min/1.73m^2); Total bilirubin [<1.5*ULN (participants with Gilbert's Syndrome may be enrolled if the total bilirubin is <4 mg/dL with predominance of indirect bilirubin >=80% of total bilirubin]); Aspartate aminotransferase or alanine aminotransferase (<=3.0*ULN); Prothrombin time (PT) or partial thromboplastin time (PTT) or international normalized ratio (INR) (PT <=15 sec or INR <=1.2 PTT <=40 sec).

Exclusion Criteria:

  • Known brain metastases
  • Chemotherapy or immunotherapy for the treatment of prostate cancer within 4 weeks of the Study Day 15 (Cycle 1 Day 1) visit
  • Prior treatment with enzalutamide within 8 weeks before first dose of drug probes
  • Therapies that must be discontinued or substituted prior to study visit Day 1, or must be temporarily interrupted during the course of the study, include the following: a) Medications known to lower the seizure threshold within 4 weeks before Study Day 15 (Cycle 1 Day 1) and b) Medications known to induce or inhibit drug metabolizing enzymes (CYP3A4, CYP2C9, CYP2C19 and CYP2C8) or transporter proteins (P-gp, BRCP, OATP1B1, and OATPB3)
  • Participant has known allergies, hypersensitivity, or intolerance to any of the study drugs/drug probes or excipients
  • History of seizure or any condition that may predispose to seizure within 12 months prior to enrollment (Study Day 1); brain arteriovenous malformation; or intercranial masses such as schwannoma or meningioma that is causing edema or mass effect
  • Participants with poor metabolizer genotype for CYP2C9 (*2, *3), or CYP2C19 (*2, *3, *4, *8)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: JNJ 56021927
Participants will receive drug cocktail (comprising of midazolam [2 milligram {mg}], warfarin [10 mg], vitamin K (10 mg), omeprazole (40 mg), and fexofenadine [30 mg]) orally on Study Day 1 and 43 (Cycle 2 Day 1). On Study Day 8 and 50, pioglitazone 15 mg will be administered orally and on Study Day 9 and 51, rosuvastatin 10 mg will be administered orally. JNJ 56021927, 240 mg once daily will be administered on Study Day 15 up to disease progression, unacceptable toxicity, withdrawal of consent, lost to follow-up, the participant is no longer receiving clinical benefit in the opinion of the Investigator, the start of subsequent anticancer therapy, or the Sponsor ends the study.
JNJ 56021927 will be administered once daily orally in a dose of 240 mg from Study Day 15 up to disease progression, unacceptable toxicity, withdrawal of consent, lost to follow-up, the participant is no longer receiving clinical benefit in the opinion of the Investigator, the start of subsequent anticancer therapy, or the Sponsor ends the study.
Drug cocktail comprise of midazolam (2 mg), warfarin (10 mg), vitamin K (10 mg), omeprazole (40 mg), and fexofenadine (30 mg) will be administered on Study Day 1 and 43.
Pioglitazone 15 mg will be administered orally on Study Day 8 and 50.
Rosuvastatin 15 mg will be administered orally on Study Day 9 and 51.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Maximum Observed Plasma Concentration (Cmax)
Time Frame: Day 1, 8, 9, 43, 50, and 51
Maximum observed plasma concentration (Cmax) is the peak plasma concentration of a drug after administration, obtained directly from the plasma concentration-time curve. Cmax for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Day 1, 8, 9, 43, 50, and 51
Area Under the Plasma Concentration-Time Curve From Time Zero to Last Quantifiable Time (AUC [0-last])
Time Frame: Day 1, 8, 9, 43, 50, and 51
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time. AUC (0-last) for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Day 1, 8, 9, 43, 50, and 51
Area Under the Plasma Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity])
Time Frame: Day 1, 8, 9, 43, 50, and 51
The AUC (0-infinity) is the area under the plasma concentration-time curve from time zero to infinite time, calculated as the sum of AUC(last) and C(last)/lambda(z); wherein AUC(last) is area under the plasma concentration-time curve from time zero to last quantifiable time, C(last) is the last observed quantifiable concentration, and lambda(z) is elimination rate constant. AUC[0-infinity]) for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Day 1, 8, 9, 43, 50, and 51

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Time Frame: Days 1, 8, 9, 43, 50, and 51
The Tmax is defined as actual sampling time to reach maximum observed analyte concentration. Tmax for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Days 1, 8, 9, 43, 50, and 51
Elimination Rate Constant (Lambda[z])
Time Frame: Day 1, 8, 9, 43, 50, and 51
Lambda(z) is first-order elimination rate constant associated with the terminal portion of the curve, determined as the negative slope of the terminal log-linear phase of the drug concentration-time curve. Lambda[z]) for midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Day 1, 8, 9, 43, 50, and 51
Elimination Half-Life (t1/2)
Time Frame: Days 1, 8, 9, 43, 50, and 51
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z). t1/2 for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Days 1, 8, 9, 43, 50, and 51
Apparent Clearance (CL/F)
Time Frame: Days 1, 8, 9, 43, 50, and 51
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. CL/F for Midazolam, S-warfarin, omeprazole, fexofenadine, pioglitazone, rosuvastatin will be assessed along with the metabolites of Midazolam, S-warfarin, omeprazole and pioglitazone.
Days 1, 8, 9, 43, 50, and 51
Maximum Observed Plasma Concentration (Cmax) for JNJ-56021927
Time Frame: Day 43
The Cmax is the maximum observed plasma concentration.
Day 43
Time to Reach Maximum Observed Plasma Concentration (Tmax) for JNJ-56021927
Time Frame: Day 43
The Tmax is defined as actual sampling time to reach maximum observed analyte concentration.
Day 43
Area Under the Plasma Concentration-Time Curve From Time Zero to 24 Hours (AUC[0-24])
Time Frame: Day 43
The AUC (0-24) is the area under the plasma concentration-time curve from time zero to 24 hours.
Day 43
Trough Plasma Concentration (Ctrough)
Time Frame: Day 43, 50 and 51
The (Ctrough) is the plasma concentration before dosing or at the end of the dosing interval of any dose other than the first dose in a multiple dosing regimen.
Day 43, 50 and 51
Number of Participants with Adverse Events
Time Frame: Up to 6 years 6 months
Up to 6 years 6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Director: Janssen Research & Development, LLC Clinical Trial, Janssen Research & Development, LLC

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 12, 2016

Primary Completion (Actual)

November 7, 2016

Study Completion (Estimated)

December 31, 2027

Study Registration Dates

First Submitted

October 29, 2015

First Submitted That Met QC Criteria

October 29, 2015

First Posted (Estimated)

October 30, 2015

Study Record Updates

Last Update Posted (Actual)

June 5, 2026

Last Update Submitted That Met QC Criteria

June 4, 2026

Last Verified

June 1, 2026

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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