- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06136598
A Study of Opevesostat (MK-5684) in China Participants With Metastatic Castration-Resistant Prostate Cancer (mCRPC) (MK-5684-001)
April 24, 2024 updated by: Merck Sharp & Dohme LLC
A Phase 1 Clinical Study to Investigate the Safety and Pharmacokinetics of MK-5684 in China Participants With Metastatic Castration-Resistant Prostate Cancer
The primary objectives of this study are to evaluate the safety and tolerability of opevesostat in the treatment of male Chinese participants with metastatic castration-resistant prostate cancer (mCRPC) and to characterize the pharmacokinetic profile of opevesostat.
There are no formal hypotheses to be tested in this study.
Study Overview
Status
Recruiting
Intervention / Treatment
Study Type
Interventional
Enrollment (Estimated)
14
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 Contact
- Name: Toll Free Number
- Phone Number: 1-888-577-8839
- Email: Trialsites@merck.com
Study Locations
-
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Beijing
-
Beijing, Beijing, China, 100034
- Recruiting
- Peking University First Hospital-Urology ( Site 0001)
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Contact:
- Study Coordinator
- Phone Number: 8613910688432
-
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Hubei
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Wuhan, Hubei, China, 430000
- Recruiting
- Tongji Hospital Tongji Medical,Science & Technology ( Site 0002)
-
Contact:
- Study Coordinator
- Phone Number: 13971656164
-
-
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
- Adult
- Older Adult
Accepts Healthy Volunteers
No
Description
The main inclusion and exclusion criteria include but are not limited to the following:
Inclusion Criteria:
- Has histologically or cytologically confirmed adenocarcinoma of the prostate without small cell histology.
- Has prostate cancer while receiving androgen deprivation therapy (ADT), or post-bilateral orchiectomy, within 6 months before screening.
- Has evidence of progression >4 weeks since last flutamide treatment or >6 weeks since last bicalutamide or nilutamide treatment.
- Has evidence of metastatic disease documented by either bone lesions on bone scan and/or soft tissue shown by CT/MRI.
- Has disease that progressed during or after treatment with at least 1 line of next-generation hormonal agents (NHAs) for hormone-sensitive prostate cancer (HSPC) or castration-resistant prostate cancer (CRPC) for at least 8 weeks (at least 14 weeks for participants with bone progression).
- Has received at least 1 line of taxane-based chemotherapy for HSPC or CRPC and have had progressed disease during or on treatment, or refused or ineligible to receive chemotherapy.
- Has a life expectancy of >3 months.
Exclusion Criteria:
- Has history of a second malignancy, unless potentially curative treatment has been completed with no evidence of malignancy for 3 years.
- Has presence of gastrointestinal condition, e.g. malabsorption, that might affect the adsorption of study intervention.
- Has a history of pituitary dysfunction.
- Has poorly controlled diabetes mellitus.
- Has active or unstable cardio/cerebro-vascular disease, including thromboembolic events.
- Has undergone major surgery, including local prostate intervention (except prostate biopsy), within 4 weeks of the date of allocation.
- Has received an anticancer monoclonal antibody (mAb) within 4 weeks of allocation, or has not recovered from adverse events (AEs) due to mAbs administered more than 4 weeks before the date of allocation.
- Received prior systemic anticancer therapy including investigational agents within 4 weeks before the date of allocation.
- Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any form of immunosuppressive therapy within 7 days prior to the start of study intervention.
- Has a known active central nervous system (CNS) metastases and/or carcinomatous meningitis.
- Has an active autoimmune disease that has required systemic treatment in the past 2 years.
- Has a history of or current human immunodeficiency virus (HIV) infection.
- Has a concurrent Hepatitis B or Hepatitis C virus infection.
- Has a history of allogenic tissue or solid organ transplant.
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: Opevesostat
Participants will receive opevesostat by oral tablets twice daily plus dexamethasone and fludrocortisone by oral tablets once daily continuously until unacceptable toxicity or documented progression.
Hydrocortisone will also be provided to participants for use as rescue medication.
|
Tablets to be taken orally
Other Names:
Tablets to be taken orally.
Other Names:
Tablet to be taken orally as a rescue medication.
Other Names:
Tablets to be taken orally.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants Who Experience an Adverse Event (AE)
Time Frame: Up to approximately 27 months
|
An AE is defined as any untoward medical occurrence associated with the use of a drug in a participant, whether or not considered drug related.
An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product and does not imply any judgment about causality.
|
Up to approximately 27 months
|
Number of Participants Who Discontinue Study Intervention Due to an AE
Time Frame: Up to approximately 27 months
|
An AE is defined as any untoward medical occurrence associated with the use of a drug in a participant, whether or not considered drug related.
An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product and does not imply any judgment about causality.
|
Up to approximately 27 months
|
Maximum Plasma Concentration (Cmax) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the Cmax of opevesostat.
|
Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Time to Maximum Plasma Concentration (Tmax) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the Tmax of opevesostat.
|
Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Area Under the Curve from Time 0 to 12 hours postdose (AUC0-12) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the AUC0-12 of opevesostat.
|
Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Apparent Volume of Distribution (Vz/F) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the Vz/F of opevesostat.
|
Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Oral Clearance (CL/F) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the CL/F of opevesostat.
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Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Half-Life (t1/2) of opevesostat
Time Frame: Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Blood samples will be collected at pre-specified timepoints to determine the t1/2 of opevesostat.
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Day 1 and Day 8: predose and 0.5, 1, 2, 3, 4, 6, 9, and 12 hours postdose, Day 29, Day 57, and Day 89: pre-dose
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Prostate-specific Antigen (PSA) Response Rate
Time Frame: Up to approximately 44 months
|
The PSA response rate is defined as the percentage of participants in the analysis population with a reduction in PSA level of ≥50% measured twice ≥3 weeks apart.
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Up to approximately 44 months
|
Radiographic Progression-free Survival (rPFS) Per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1)
Time Frame: Up to approximately 44 months
|
rPFS is defined as the time from first dose of study intervention to radiographic progression per PCWG-modified RECIST 1.1 as assessed by the investigator OR death due to any cause, whichever occurs first.
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Up to approximately 44 months
|
Objective Response Rate (ORR) Per PCWG-modified RECIST 1.1
Time Frame: Up to approximately 44 months
|
ORR is defined as the percentage of participants who have a best overall response of either confirmed Complete Response (CR: disappearance of all target lesions) or a confirmed Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per PCWG-modified RECIST 1.1 as assessed by the investigator.
|
Up to approximately 44 months
|
Duration of Response (DOR) Per PCWG-modified RECIST 1.1
Time Frame: Up to approximately 44 months
|
For participants who demonstrate a confirmed Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per PCWG-modified RECIST 1.1, DOR is defined as the time from first documented evidence of confirmed CR or PR until disease progression or death from any cause, whichever occurs first.
|
Up to approximately 44 months
|
Overall Survival (OS)
Time Frame: Up to approximately 44 months
|
OS is defined as time from first dose of study intervention to death due to any cause.
|
Up to approximately 44 months
|
Blood Concentrations of Steroids
Time Frame: At designated timepoints (up to approximately 44 months)
|
Blood samples collected at multiple timepoints after the administration of opevesostat will be used to determine the blood concentrations of steroids.
|
At designated timepoints (up to approximately 44 months)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Study Director: Medical Director, Merck Sharp & Dohme LLC
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Helpful Links
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)
January 30, 2024
Primary Completion (Estimated)
April 30, 2026
Study Completion (Estimated)
October 14, 2027
Study Registration Dates
First Submitted
November 13, 2023
First Submitted That Met QC Criteria
November 13, 2023
First Posted (Actual)
November 18, 2023
Study Record Updates
Last Update Posted (Actual)
April 25, 2024
Last Update Submitted That Met QC Criteria
April 24, 2024
Last Verified
April 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Neoplasms
- Urogenital Neoplasms
- Neoplasms by Site
- Genital Neoplasms, Male
- Prostatic Diseases
- Urogenital Diseases
- Male Urogenital Diseases
- Genital Diseases, Male
- Genital Diseases
- Prostatic Neoplasms
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Autonomic Agents
- Peripheral Nervous System Agents
- Enzyme Inhibitors
- Anti-Inflammatory Agents
- Antineoplastic Agents
- Antiemetics
- Gastrointestinal Agents
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Antineoplastic Agents, Hormonal
- Protease Inhibitors
- Dexamethasone
- Dexamethasone acetate
- BB 1101
- Hydrocortisone
- Hydrocortisone 17-butyrate 21-propionate
- Hydrocortisone acetate
- Hydrocortisone hemisuccinate
- Fludrocortisone
Other Study ID Numbers
- 5684-001
- MK-5684-001 (Other Identifier: Merck)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
YES
IPD Plan Description
http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
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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