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A Study of Carbon-14-Labelled [14C] LY3871801 in Healthy Male Participants

A Phase 1, Open-label Study of the Absorption, Metabolism, and Excretion of [14C]-LY3871801 in Healthy Male Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06049108
Enrollment
8
Registered
2023-09-21
Start date
2023-09-15
Completion date
2023-11-03
Last updated
2024-01-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Brief summary

The main purpose of this study is to evaluate how much of the study drug (LY3871801), administered as a single dose that has the radioactive substance 14C incorporated into it, passes from blood into urine, feces and expired air in healthy male participants. The study will also measure how much of the study drug gets into the bloodstream, how its broken down, and how long it takes the body to get rid of it. The study will last up to approximately 9 weeks including the screening period.

Interventions

DRUG[14C]-LY3871801

Administered orally

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Male participants who are overtly healthy as determined by medical evaluation * Have a body mass index of 18.5 to 32.0 kilograms per meter squared (kg/m²), inclusive * Males who agree to use highly effective or effective methods of contraception

Exclusion criteria

* Have known allergies to LY3871801, related compounds, or any components of the formulation, or a history of significant atopy * Have received or intend to receive any vaccination within 30 days prior to dosing until the follow-up phone call * Have participated in a radiolabeled drug study, where exposures are known to the investigator or designee, within 4 months prior to check-in, or participated in a radiolabeled drug study, where exposures are not known to the investigator or designee, within 6 months prior to check-in

Design outcomes

Primary

MeasureTime frameDescription
Urinary Excretion of LY3871801 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose AdministeredPredose up to Day 7 post doseUrinary Excretion of LY3871801 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered
Fecal Excretion of LY3871801 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose AdministeredPredose up to Day 7 post doseFecal Excretion of LY3871801 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered

Secondary

MeasureTime frameDescription
PK: Maximum Concentration (Cmax) of [¹⁴C]-LY3871801Predose up to Day 7 post dosePK: Cmax of \[¹⁴C\]-LY3871801
PK: Cmax of Total RadioactivityPredose up to Day 7 post dosePK: Cmax of Total Radioactivity
Pharmacokinetics (PK): Area Under the Concentration Curve Versus Time From zero to Infinity (AUC [0-∞]) of [¹⁴C]-LY3871801Predose up to Day 7 post dosePK: AUC \[0-∞\] of \[¹⁴C\]-LY3871801
Total Number of Metabolites of LY3871801Predose up to Day 7 post doseTotal Number of Metabolites of LY3871801
Total Radioactivity Recovered in Urine, Feces, and Expired AirPredose up to Day 7 post doseTotal Radioactivity Recovered in Urine, Feces, and Expired Air
PK: AUC [0-∞] of Total Radioactivity in Plasma and Whole BloodPredose up to Day 7 post dosePK: AUC \[0-∞\] of Total Radioactivity in Plasma and Whole Blood

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026