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A Clinical Study To Understand How Radiolabeled MK-5475 Is Taken Up By The Body, Broken Down And Then Removed From The Body in Healthy Participants (MK-5475-011)

An Open-label Phase 1 IV Study to Evaluate Metabolism, Excretion, and Mass Balance of [14C]MK-5475 in Healthy Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06777602
Enrollment
8
Registered
2025-01-16
Start date
2022-08-15
Completion date
2022-10-25
Last updated
2025-10-29

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

Conditions

Healthy

Brief summary

The goal of this study is to understand how radiolabeled MK-5475 administered intravenously (IV) is taken up by the body, broken down and then removed from the body in healthy male participants. The study also aims to understand how much of the compound is broken down and how much leaves the body unchanged.

Interventions

DRUG[14C] MK-5475

\[14C\] MK-5475 is administered as a single IV bolus dose in healthy male participants on Day 1.

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

* Is in good health. * Body mass index (BMI) \>18 and ≤32 kg/m2, inclusive.

Exclusion criteria

* Has history of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or diseases. * Has significant multiple and/or severe allergies, or has had an anaphylactic reaction or significant intolerability to prescription or nonprescription drugs or food. * Has had a major surgery and/or donated or lost 1 unit of blood (approximately 500 mL) or blood products within 4 weeks prior to the prestudy (screening). * Has history of exposure to significant diagnostic or therapeutic radiation or current employment in a job requiring radiation exposure monitoring within 12 months prior to check-in. * Has participated in more than 3 radiolabeled drug studies in the last 12 months.

Design outcomes

Primary

MeasureTime frameDescription
AUC0-infinity Plasma [14C]MK-5475/Total Radioactivity RatioAt designated time points (Up to ~ 23 days)AUC time zero to infinity (0-∞) of \[14C\]MK-5475 in plasma/AUC0-∞ of total radioactivity in plasma.
Apparent Total Clearance (CL; MK-5475 only)At designated time points (Up to ~ 23 days)CL is defined as apparent total clearance of \[14C\]MK-5475 from plasma after IV administration
Apparent Volume of Distribution (Vz; MK-5475 only)At designated time points (Up to ~ 23 days)Vz is defined as apparent volume of distribution of \[14C\]MK-5475 during terminal phase after IV administration.
Amount Excreted in Urine (Aeu)At designated time points (Up to ~ 23 days)Amount of \[14C\]MK-5475 and its metabolites excreted in urine (Aeu) derived from urine collections at each sampling interval.
Cumulative AeuAt designated time points (Up to ~ 23 days)Cumulative amount of \[14C\] MK-5475 and its metabolites excreted in urine derived from urine collections at each sampling interval
Percentage Excreted in Urine (feu)At designated time points (Up to ~ 23 days)Percentage of \[14C\]MK-5475 and its metabolites excreted in urine derived from urine collections at each sampling interval.
Cumulative feuAt designated time points (Up to ~ 23 days)Cumulative percentage of \[14C\]MK-5475 and its metabolites excreted in urine derived from urine collections at each sampling interval.
Amount Excreted in Feces (Aef)At designated time points (Up to ~ 23 days)Amount of \[14C\]MK-5475 and its metabolites excreted in feces derived from feces collections at each sampling interval.
Cumulative AefAt designated time points (Up to ~ 23 days)Cumulative amount of \[14C\]MK-5475 and its metabolites excreted in feces derived from feces collections at each sampling interval.
Cumulative FefAt designated time points (Up to ~ 23 days)Cumulative percentage of \[14C\]MK-5475 and its metabolites excreted in feces derived from feces collections at each sampling interval.
AUC0-tAt designated time points (Up to ~ 23 days)Area under concentration time curve (AUC) from time zero to the last quantifiable concentration derived from the whole blood and plasma concentration-time profiles following IV administration of \[14C\]MK-5475.
AUC0-infinityAt designated time points (Up to ~ 23 days)AUC from time zero extrapolated to infinity derived from the whole blood and plasma concentration-time profiles following IV administration of \[14C\]MK-5475.
Maximum Plasma Concentration (Cmax)At designated time points (Up to ~ 23 days)Cmax is the measure of the maximum amount of \[14C\]MK-5475 in the plasma after the dose is given.
Half-life t1/2At designated time points (Up to ~ 23 days)T1/2 is the time required for \[14C\]MK-5475 concentration in the plasma to decrease by 50%.
Time to Maximum Plasma Concentration (Tmax),At designated time points (Up to ~ 23 days)Tmax is a measure of the time to reach the maximum concentration in the plasma after the \[14C\]MK-5475 dose.

Secondary

MeasureTime frameDescription
Number of Participants Who Discontinue Study Due to an AEUp to ~ 30 daysAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study due to an AE will be reported.
Number of Participants Who Experience an Adverse Event (AE)Up to ~ 30 daysAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experience an AE will be reported.

Countries

United States

Outcome results

None listed

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