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A Study Investigating the Safety, Absorption, and Elimination of Radioactively Labeled Etrumadenant, a New Compound in the Treatment of Cancer

A Phase 1, Open-label Study to Assess the Absorption, Metabolism, and Excretion, Including the Mass Balance, of a Single Oral Dose of [14C]-Etrumadenant in Healthy Male Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05411146
Enrollment
8
Registered
2022-06-09
Start date
2022-05-25
Completion date
2022-07-07
Last updated
2024-05-24

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

Conditions

Healthy Participants

Keywords

Etrumadenant, Pharmacokinetics, AB928, Healthy participants

Brief summary

This study will assess absorption, metabolism, and excretion of Radioactively Labeled Etrumadenant in healthy volunteers.

Interventions

DRUG[14C]-etrumadenant

Administered as specified in the treatment arm.

Sponsors

Gilead Sciences
CollaboratorINDUSTRY
Arcus Biosciences, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* BMI between 18.0 to 32.0 kg/m2 * Body weight ≥50 kg * Good physical and mental health on the basis of medical history, physical examination, clinical laboratory, ECG, and vital signs, as judged by the Investigator. * All clinical laboratory test results within the normal range or showing no clinically relevant deviations as judged by the Investigator. * Male subjects, if not surgically sterilized, must agree to use adequate contraception and not donate sperm from (first) admission to the clinical research center until 90 days after the study drug administration. Adequate contraception for the male subject (and his female partner, if she is of childbearing potential) is defined as using hormonal contraceptives or an intrauterine device combined with at least 1 of the following forms of contraception: a diaphragm, a cervical cap, or a condom. Total abstinence from heterosexual intercourse, in accordance with the lifestyle of the subject, is also acceptable.

Exclusion criteria

* Positive drug and alcohol screen (opiates, methadone, cocaine, amphetamines \[including ecstasy\], cannabinoids, barbiturates, benzodiazepines, tricyclic antidepressants, and alcohol) at screening or admission to the clinical research center. * Significant and/or acute illness within 5 days prior to drug administration that may impact safety assessments, in the opinion of the Investigator. * Irregular defecation pattern (less than once per 2 days). * For a study with a radiation burden of superior to 0.1 mSv, the subject will be excluded if he participated in another study with a radiation burden of superior to 0.1 mSv and inferior or equal to 1 mSv in the period of 1 year prior to screening; a radiation burden of superior to 1.1 mSv and inferior or equal 2 mSv in the period of 2 years prior to screening; a radiation burden of superior to 2.1 mSv and inferior or equal 3 mSv in the period of 3 years prior to screening. * Exposure to radiation for diagnostic reasons (except dental X rays and plain X rays of thorax and bony skeleton \[excluding spinal column\]), during work, or during participation in a clinical study in the period of 1 year prior to screening. NOTE: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Number of participants with abnormal electrocardiogram (ECG) readings, abnormal vital signs, abnormal physical examinations and abnormal clinical laboratory tests resultsUp to 38 days
Excretion of total radioactivity in urineUp to 25 days
Excretion of total radioactivity in fecesUp to 25 days
Percentage of total radioactivity in urine at selected time pointsUp to 25 days
Percentage of total radioactivity in feces at selected time pointsUp to 25 days
Mass balance recovery of total radioactivity in urineUp to 25 days
Mass balance recovery of total radioactivy in fecesUp to 25 days
Number of Participants with Treatment Emergent Adverse Events (TEAEs)Up to 38 days

Secondary

MeasureTime frame
Percentage of total radioactivity in plasmaUp to 24 days
Maximum Observed Plasma Concentration (Cmax)Up to 25 days
Time to Cmax (Tmax)Up to 25 days
Area Under the Curve From 0 to Last Observed Non-zero Concentration (AUC [0-Last])Up to 25 days
Area Under the Curve From Time '0' Extrapolated to Infinity (AUC[0-inf])Up to 25 days
Elimination Half-life (t1/2)Up to 25 days
Percentage of total radioactivity in bloodUp to 24 days

Countries

Netherlands

Outcome results

None listed

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