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A Drug-Drug Interaction Study of Itraconazole and Opevesostat (MK-5684) in Healthy Adult Male Participants (MK-5684-017)

A Phase 1, Open-Label, Fixed-Sequence Study to Evaluate the Effects of Multiple Doses of Itraconazole on the Single-Dose Pharmacokinetics of MK-5684 in Healthy Adult Male Participants

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07548606
Enrollment
14
Registered
2026-04-23
Start date
2026-05-04
Completion date
2026-06-14
Last updated
2026-04-30

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

Conditions

Healthy

Brief summary

Researchers have designed a study medicine called opevesostat as a new way to treat prostate cancer. The purpose of this study is to learn what happens to opevesostat in a person's body over time (a pharmacokinetic or PK study). Researchers will compare what happens to opevesostat in the body when it is given with and without another medicine called itraconazole.

Interventions

Administered via oral film-coated tablet

DRUGPrednisone

Administered via oral tablet

Administered via oral tablet

DRUGItraconazole

Administered via oral capsule

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

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

Inclusion criteria

The main inclusion criteria include but are not limited to the following: * Has a body mass index ≥18.0 and ≤32.0 kg/m\^2 * Is medically healthy with no clinically significant medical history

Exclusion criteria

The main

Design outcomes

Primary

MeasureTime frameDescription
Area under the concentration versus time curve from 0 to infinity after single dosing (AUC0-inf) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the AUC0-inf of opevesostat.
Area under the concentration versus time curve from 0 to last quantifiable sample (AUC0-last) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the AUC0-last of opevesostat.
Maximum concentration (Cmax) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the Cmax of opevesostat.
Time to Maximum concentration (Tmax) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the Tmax of opevesostat.
Apparent terminal half-life (t1/2) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the t1/2 of opevesostat.
Apparent Clearance (CL/F) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the CL/F of opevesostat.
Apparent volume of distribution during terminal phase (Vz/F) of opevesostatPredose, and at designated timepoints up to 144 hours post-doseBlood samples will be collected to determine the Vz/F of opevesostat.

Secondary

MeasureTime frameDescription
Number of participants who experience one or more adverse events (AEs)Up to approximately 28 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.
Number of participants who discontinue study intervention due to an AEUp to approximately 28 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 intervention due to an AE will be reported.

Countries

United States

Contacts

CONTACTToll Free Number
Trialsites@merck.com1-888-577-8839
STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 1, 2026