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CompletedNCT06845852Updated Sep 26, 2025

A Phase 1 Mass Balance Study of Varegacestat

A Phase 1 interventional study of varegacestat in Healthy Volunteer, sponsored by Immunome, Inc.. Completed at 1 site in United States. Open to male participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-26.

Sponsored by Immunome, Inc. · Phase 1, Interventional, and Other

Phase
Phase 1
Study type
Interventional
Enrollment
6
Allocation
Not applicable
Ages
18 Years to 55 Years
Sex
Male
01

Study summary

This clinical study is designed to study the mass balance of a single dose of varegacestat in healthy male participants.

Read the detailed description

This is a single-center, open-label, Phase 1, mass balance study of varegacestat administered as a single oral dose (containing \~100 µCi) [14C]varegacestat in 6 healthy male participants.

Following completion of Screening and Day -1 assessments and an overnight fast of at least 10 hours, eligible participants will be administered a single dose (containing \~100 µCi) [14C]varegacestat as 2 oral capsules followed by approximately 240 mL room temperature filtered water on the morning of Day 1. Whole blood, plasma, urine, feces, and vomitus (if any, up to 24 hours post-dose) will be collected over at least 168 hours post-dose.

02

Conditions studied

  • Healthy Volunteer

Keywords

  • absorption
  • metabolism
  • excretion
  • mass balance
03

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Inclusion criteria

  • Be a male participant between 18 and 55 years of age, inclusive, at Screening.
  • Medically healthy based on the absence of clinically significant abnormal vital sign measurements, clinical laboratory test results (especially tests for renal and hepatic function), resting 12-lead Electrocardiogram (ECG) evaluation, and physical examination, as determined by the Investigator at Screening and the Check-In visit.

Exclusion criteria

Exclusion Criteria:

  • Have taken an investigational drug or participated in a clinical trial evaluating an investigational drug or device within 30 days (or 5 half-lives) prior to the study drug dose, whichever is longer.
  • Have participated in a radiolabeled drug study or have been otherwise exposed to significant diagnostic (excluding dental X-rays), therapeutic, or occupational radiation, where exposure is made known to the Investigator, within one year prior to admission to the clinic for this study. The total estimated 12-month exposure to radio material or ionizing radiation should be below the CFR recommended levels considered safe (per US Title 21 CFR 361.1) or below 3000 mrem.
  • Any condition which, in the opinion of the Investigator and/or Sponsor, would jeopardize participant safety or compliance with the Protocol.
04

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    Drug: varegacestat

    Single oral dose of varegacestat administered on study Day 1

    Drug: varegacestat

Interventions

  • Drugvaregacestat

    Single oral dose of varegacestat

05

What researchers measure

Primary outcomes

  1. The mass balance of varegacestat following administration of a single oral dose (containing ~100 µCi) [14C]varegacestat in healthy adult male participants.

    Time frame: Up to 15 days

Secondary outcomes

  1. The total radioactivity in plasma, whole blood, urine, and feces following administration of a single oral dose (containing ~100 µCi) [14C]varegacestat in healthy adult male participants.

    Time frame: Up to 15 days

  2. The area under the concentration equivalent-time curve (AUC), from time 0 to the last observed non-zero concentration of varegacesatat and AL102-MTB (Varegacestat metabolite) in plasma.

    Time frame: Up to 15 days

  3. The AUC from time 0 extrapolated to infinity, calculated as the sum of AUC0-t plus the ratio of the last measurable plasma concentration to the elimination rate constant of varegacesatat and AL102-MTB in plasma.

    Time frame: Up to 15 days

  4. Maximum observed concentration (Cmax) of varegacesatat and AL102-MTB (Varegacestat metabolite) in plasma.

    Time frame: Up to 15 days

  5. Apparent first-order terminal elimination half-life (t1/2) will be calculated as 0.693/Kel of varegacesatat and AL102-MTB (Varegacestat metabolite) in plasma.

    Time frame: Up to 15 days

  6. Percentage of each metabolite in urine and feces relative to the administered dose or percentage of metabolites in plasma relative to total drug related exposure AUC.

    Time frame: Up to 15 days

  7. The safety and tolerability of a single oral dose (containing ~100 µCi) [14C]varegacestat in healthy adult male participants by incidences of treatment-emergent adverse events.

    Time frame: Up to 15 days

06

Study locations

1 site
  • Frontage Laboratories, Inc.
    Secaucus, New Jersey 07094, United States
07

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

08

Registry details

Key details

Study ID
NCT06845852
Lead sponsor
Immunome, Inc.
Responsible party
Sponsor
First posted
Feb 25, 2025
Start date
Feb 25, 2025
Primary completion
Mar 11, 2025
Completion
Mar 26, 2025
Last update
Sep 26, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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