A Clinical Study of Belzutifan (MK-6482) Alone or With Phenytoin in Healthy Participants (CA46602/MK-6482-035)

NCT ID: NCT06903715

Last Updated: 2025-06-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-03-28

Study Completion Date

2025-05-27

Brief Summary

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Researchers designed belzutifan, the study medicine, to treat certain kinds of cancer.

The goal of this study is to learn what happens to belzutifan in a healthy person's body over time when taken, by mouth, as a tablet. Researchers will learn what happens when belzutifan is taken alone and when it is taken after several days of treatment with phenytoin.

Detailed Description

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Conditions

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Healthy

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Belzutifan + Phenytoin

Participants receive belzutifan during study Period 1, followed by a washout period, then they receive belzutifan and phenytoin during study Period 2.

Group Type EXPERIMENTAL

Belzutifan

Intervention Type DRUG

Oral administration

Phenytoin

Intervention Type DRUG

Oral administration

Interventions

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Belzutifan

Oral administration

Intervention Type DRUG

Phenytoin

Oral administration

Intervention Type DRUG

Other Intervention Names

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MK-6482 PT2977 Welireg™ Phenytoin sodium

Eligibility Criteria

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Inclusion Criteria

* Healthy, adult, male (vasectomized or surgically sterilized) or female (of non-childbearing potential)
* Has a body mass index (BMI) ≥ 18.0 and ≤ 32.0 kg/m2

Exclusion Criteria

* Has a history of any illness that, in the opinion of the PI or designee, might confound the results of the study or poses an additional risk to the participant by their participation in the study
* History or presence of: Seizure (excluding simple febrile seizure), epilepsy, severe head injury, multiple sclerosis, or other known neurological conditions which the PI considers to be clinically significant; Hypersensitivity reaction to anticonvulsant therapy (including phenytoin, primidone, and phenobarbital); Depression, unusual changes in mood or behavior or suicidal thoughts and behavior; Hepatic porphyria (e.g., acute intermittent porphyria, variegate porphyria, porphyria cutanea tarda)
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Merck Sharp & Dohme LLC

Locations

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Celerion, Inc. ( Site 0001)

Tempe, Arizona, United States

Site Status

Countries

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United States

Related Links

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https://www.merckclinicaltrials.com/

Merck Clinical Trials Information

Other Identifiers

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CA46602

Identifier Type: OTHER

Identifier Source: secondary_id

6482-035

Identifier Type: -

Identifier Source: org_study_id

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