A Study of Belzutifan (MK-6482) in Participants With Renal Impairment (MK-6482-021)

March 19, 2025 updated by: Merck Sharp & Dohme LLC

An Open-Label, Single-Dose Study to Investigate the Influence of Renal Impairment on the Pharmacokinetics of MK-6482

The primary purpose of this study is to compare the plasma pharmacokinetics (PK) of belzutifan (MK-6482) following a single oral 120 mg dose in participants with end stage renal disease (ESRD) before and after hemodialysis (HD) to each other and also to that of healthy matched control participants. This study will also evaluate the safety and tolerability of a single oral 120 mg dose of belzutifan in participants with ESRD and the extent of belzutifan removed by HD.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
14

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Florida
      • Orlando, Florida, United States, 32809
        • Orlando Clinical Research Center ( Site 0001)

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

For Participants With Healthy Renal Function

  • Is in good health based on the opinion of the investigator.
  • Male participants agree to remain abstinent from heterosexual intercourse on a long-term basis or must agree to use contraception as instructed.
  • Female participants must be of nonchildbearing potential.

For Participants With end stage renal disease (ESRD)

  • With exception of the renal impairment, is in good health based on the opinion of the investigator.
  • Has ESRD maintained on stable regimen of at least 3 times per week hemodialysis (HD) for at least 3 months prior to the initial administration of the study intervention.
  • Male participants agree to remain abstinent from heterosexual intercourse on a long-term basis or must agree to use contraception as instructed.
  • Female participants must be of nonchildbearing potential.

Exclusion Criteria:

For Participants With Healthy Renal Function

  • Has a history of clinically significant endocrine, gastrointestinal (GI), cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or diseases.
  • Has a history of cancer (malignancy).
  • Is positive for hepatitis B surface antigen (HBsAg), hepatitis C antibodies or human immunodeficiency virus (HIV).
  • Had major surgery, donated or lost 1 unit of blood (approximately 500 mL) within 4 weeks prior to the prestudy (screening) visit.
  • Has received any non-live vaccine starting from 14 days prior to study intervention or is scheduled to receive any non-live vaccine through 30 days following study intervention (except coronavirus disease 2019 [COVID-19]).

Participants With ESRD

  • Has a history of cancer (malignancy).
  • Has required frequent emergent HD (≥3) within a year prior to the initial dose of study intervention.
  • Is positive for HBsAg, hepatitis C antibodies, or HIV.
  • Had major surgery, donated or lost 1 unit of blood (approximately 500 mL) within 4 weeks prior to the prestudy (screening) visit.
  • Has received any non-live vaccine starting from 14 days prior to study intervention or is scheduled to receive any non-live vaccine through 30 days following study intervention (except COVID-19)

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: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Belzutifan in Participants with ESRD
In period 1, participants with ESRD will receive a single, oral dose of belzutifan 120 mg on Day 1 after HD. In period 2, participants with ESRD will receive a single, oral dose of belzutifan 120 mg on Day 1 before HD. Each period is 4 days.
Drug: Belzutifan
Three 40 mg tablets given as a single oral 120 mg dose.
Other Names:
  • MK-6482
  • PT2977
  • WELIREG
Experimental: Belzutifan in Healthy Participants
In period 1, healthy participants will receive a single, oral dose of belzutifan 120 mg on Day 1 of a 4-day period.
Drug: Belzutifan
Three 40 mg tablets given as a single oral 120 mg dose.
Other Names:
  • MK-6482
  • PT2977
  • WELIREG

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Area Under the Plasma Concentration Time Curve of Belzutifan From Hour 0 to Infinity (AUC0-inf)
Time Frame: Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
AUC0-inf was defined as the area under the concentration-time curve of belzutifan from time zero to infinity. Blood samples collected predose and at multiple timepoints postdose were used to determine AUC0-inf of belzutifan in plasma.
Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
Area Under the Plasma Concentration Time Curve of Belzutifan From Hour 0 to 24 (AUC0-24)
Time Frame: Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, and 24 hours postdose
AUC0-24 was defined as the area under the concentration-time curve of belzutifan from time zero to 24 hours postdose. Blood samples collected predose and at multiple timepoints postdose were used to determine AUC0-24 of belzutifan in plasma.
Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, and 24 hours postdose
Maximum Plasma Concentration (Cmax) of Belzutifan
Time Frame: Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
Cmax is the maximum concentration of belzutifan observed in plasma. Blood samples collected predose and at multiple timepoints postdose were used to determine Cmax of belzutifan in plasma.
Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
Time to Maximum Plasma Concentration (Tmax) of Belzutifan
Time Frame: Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
Tmax is the amount of time that belzutifan is present at the maximum concentration observed in plasma. Blood samples collected predose and at multiple timepoints postdose were used to determine Tmax of belzutifan in plasma.
Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
Apparent Terminal Half-life (t½) of Plasma Belzutifan
Time Frame: Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose
t1/2 is defined as the time required to divide plasma concentration of belzutifan by half. Blood samples collected predose and at multiple timepoints postdose were used to determine the apparent terminal t1/2 of belzutifan in plasma.
Predose, and at 0.5, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48, and 72 hours postdose

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Dialysis Clearance of Belzutifan Based on Plasma (CLD, Plasma)
Time Frame: Pre-dialysis, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, and 4 hours post-dialysis on Day 1 of Period 2 (Study Day ~12)
CLD, plasma is defined as a measure of the extent of belzutifan removed by HD. Blood samples collected at pre-dialysis and at multiple timepoints post-dialysis were used to measure the extent of belzutifan in plasma removal by HD.
Pre-dialysis, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, and 4 hours post-dialysis on Day 1 of Period 2 (Study Day ~12)
Percentage of Participants Who Experienced an Adverse Event (AE)
Time Frame: Up to 32 days
An AE is any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE. The percentage of participants who experienced an AE are reported.
Up to 32 days
Percentage of Participants Who Discontinue Study Intervention Due to an AE
Time Frame: Up to 12 days
An AE is any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product or protocol-specified procedure, whether or not considered related to the medicinal product or protocol-specified procedure. Any worsening of a preexisting condition that is temporally associated with the use of the Sponsor's product, is also an AE. The percentage of participants who discontinue study intervention due to an AE are reported.
Up to 12 days

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Merck Sharp & Dohme LLC

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • 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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 12, 2022

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 11, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 2, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 2, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 6, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 6, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 19, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 6482-021
  • MK-6482-021 (Other Identifier: MSD)

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

Yes

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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