A Study to Evaluate the Absorption, Distribution, Metabolism, and Excretion of [14C]-MRM-3379

July 14, 2026 updated by: Mirum Pharmaceuticals, Inc.

A Phase 1, Open-label, Trial of the Absorption, Distribution, Metabolism, and Excretion of [14C]-MRM-3379 Following a Single Oral Dose in Healthy Male Participants

This is a Phase 1, open label study in healthy male participants to study the Absorption, Distribution, Metabolism, and Excretion of [14C]-MRM-3379 drug following a single oral dose.

Study Overview

Status

Status

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

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 (Estimated)

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.
8

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 Contact Backup

Study Locations

  • United States
    • Wisconsin
      • Madison, Wisconsin, United States, 53704
        • Recruiting
        • Fortrea Clinical Research Unit Inc
        • Contact:

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

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Male of any race, between 18 and 55 years of age, inclusive.
  2. Body mass index between 18.0 and 32.0 kg/m2, inclusive, and a body weight between 50 and 110 kg, inclusive.
  3. In good health, as determined by medical history, and as assessed by the investigator (or designee).
  4. Able to comprehend and are willing to sign the ICF and abide by the trial restrictions.

Exclusion Criteria:

  1. History of or current medical condition that would place the participant at risk from study participation.
  2. Administration of any vaccine within 30 days prior to dosing.
  3. Use or intend to use any medications/products known to alter drug absorption, metabolism, or elimination processes, including St. John's wort, within 30 days prior to dosing, considered to potentially impact participant safety or the objectives of the trial, as determined by the investigator (or designee).
  4. Participation in a clinical trial involving administration of an IMP (new chemical entity) in the past 30 days or 5 half-lives of that drug (if known) prior to dosing, whichever is longer.
  5. Have previously completed or withdrawn from this trial or any other trial investigating MRM-3379 or have previously received MRM-3379.
  6. Participants who have previously been dosed in >2 radiolabeled drug studies in the last 12 months. For participants who have previously been dosed in ≤2 radiolabeled drug studies within the last 12 months, the previous radiolabeled dose must be at least 4 months prior to check-in to the trial site where exposures are known to the investigator or 6 months prior to check-in to the trial site for a radiolabeled drug trial where exposures are not known to the investigator. The total 12-month exposure from this trial and a maximum of 2 other previous radiolabeled studies must be within the CFR recommended levels considered safe, per US Title 21 CFR 361.1.
  7. Participants with exposure to significant diagnostic or therapeutic radiation or current employment in a job requiring radiation exposure monitoring within 12 months prior to check-in.
  8. Participants who, in the opinion of the investigator (or designee), should not participate in this trial.

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: Basic Science
  • Allocation: N/A
  • Interventional Model: Single Group 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: Healthy Male Volunteers
Participants in this arm will receive a single dose of 5 mg [14C]-MRM-3379.
Drug: [14C]-MRM-3379
Oral capsule administered on Day 1 only.
Other Names:
  • MRM-3379

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
Total radioactivity recovery of MRM-3379 in urine and feces
Time Frame: Up to 11 days post dose
Evaluate the cumulative and total radioactivity in urine and feces following administration of a single oral dose of radiolabeled MRM-3379.
Up to 11 days post dose
Maximum observed concentration (Cmax) of MRM-3379 and 2 metabolites in plasma
Time Frame: Up to 11 days post dose
Up to 11 days post dose
Time to maximum observed concentration (tmax) of MRM-3379 and 2 metabolites in plasma
Time Frame: up to 11 days post dose
up to 11 days post dose
Area under the concentration-time curve from time zero to the last quantifiable concentration (AUC0-tlast) of MRM-3379 and 2 metabolites in plasma
Time Frame: up to 11 days post dose
up to 11 days post dose
Maximum observed concentration (Cmax) of total radioactivity in plasma and whole blood
Time Frame: up to 11 days post dose
up to 11 days post dose
Time to maximum observed concentration (tmax) of total radioactivity in plasma and whole blood
Time Frame: up to 11 days post dose
up to 11 days post dose
Area under the concentration-time curve from time zero to the last quantifiable concentration (AUC0-tlast) of total radioactivity in plasma and whole blood
Time Frame: Up to 11 days post dose
Up to 11 days post dose
Amount of MRM-3379 and 2 metabolites excreted in the urine (Ae) over sampling period
Time Frame: Up to 11 days post dose
Up to 11 days post dose
Fraction of MRM-3379 and 2 metabolites excreted in the urine (Fe) as Ae/dose
Time Frame: Up to 11 days post dose
Up to 11 days post dose
Renal clearance of MRM-3379 as Ae/AUC
Time Frame: Up to 11 days post dose
Up to 11 days post dose

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
Assessment of metabolites in plasma and excreta by liquid chromatography-radiochemical-detection and subsequent mass spectrometry
Time Frame: Up to 11 days post dose
Evaluate the quantitative metabolic profile of MRM-3379 in plasma, urine, and feces via radiochromatographic profiles and identify associated metabolites following administration of a single oral dose of radiolabeled MRM-3379.
Up to 11 days post dose
Number of subjects with treatment-related adverse events
Time Frame: Up to 11 days post dose
Up to 11 days post dose

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.
Mirum Pharmaceuticals, Inc.

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.
  • Principal Investigator: Kimberly Cruz, MD, Fortrea Clinical Research Unit Inc.

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.
May 29, 2026

Primary Completion (Estimated)

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.
July 1, 2026

Study Completion (Estimated)

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.
July 1, 2026

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).
June 26, 2026

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.
July 14, 2026

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.
July 17, 2026

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.
July 17, 2026

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.
July 14, 2026

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.
July 1, 2026

More Information

Terms related to this study

Keywords

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.
  • ENV-105

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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