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A Clinical Trial to Evaluate the Effect of Ulonivirine (MK-8507) on Heart Rhythm in Healthy Adults (MK-8507-012)

A Double-Blind, Placebo-Controlled Trial to Evaluate the Effect of MK-8507 on the QTc Interval in Healthy Adult Participants

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07305831
Enrollment
62
Registered
2025-12-26
Start date
2026-01-22
Completion date
2026-04-09
Last updated
2026-03-03

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

Conditions

Healthy

Brief summary

Researchers are looking for new treatments for HIV-1 (human immunodeficiency virus type 1) that are safe, well-tolerated, and can be taken less often. HIV-1 is the most common type of HIV, which is a virus that attacks cells of the immune system. Ulonivirine (MK-8507) is a study medicine designed to treat HIV-1 The goal of this study is to learn if ulonivirine does not increase the QT interval (a measure of heart rhythm on an electrocardiogram) above a certain amount. Researchers also want to learn what happens to the amount of ulonivirine in a healthy person's body over time.

Interventions

Oral tablet

DRUGMoxifloxacin

Oral tablet

DRUGUlonivirine Placebo

Oral tablet

DRUGMoxifloxacin Placebo

Oral tablet

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

* Is in good health before randomization * Has body Mass Index (BMI) between 18 and 32 kg/m2, inclusive

Exclusion criteria

* Has a history of clinically significant endocrine, gastrointestinal (GI), cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or diseases * Has history of cancer (malignancy) * Has positive test(s) for hepatitis B surface antigen (HBsAg), hepatitis C antibodies or human immunodeficiency virus (HIV)

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in QT Interval Corrected for Heart Rate (QTc) Following Ulonivirine AdministrationBaseline and up to approximately 24 hoursChange from baseline in QTc following ulonivirine administration will be reported.
Plasma Concentration of Ulonivirine at QTc Intervals (Cqtc)At designated timepoints (up to approximately 24 hours)Blood samples will be collected to determine the Cqtc of ulonivirine.

Secondary

MeasureTime frameDescription
Change From Baseline in QT Interval Corrected for Heart Rate (QTc) Following Moxifloxacin AdministrationBaseline to up to approximately 24 hoursChange from baseline in QTc following moxifloxacin administration will be reported.
Plasma concentration of Moxifloxacin at QTc intervals (Cqtc)At designated timepoints (up to approximately 24 hours)Blood samples will be collected to determine the Cqtc of moxifloxacin.
Maximum Plasma Concentration (Cmax) of MoxifloxacinAt designated timepoints (up to approximately 168 hours)Blood samples will be collected to determine the Cmax of moxifloxacin.
Area Under the Plasma Concentration-Time Curve From Time 0 to 24 Hours (AUC0-24) of UlonivirineAt designated timepoints (up to 168 hours)Blood samples will be collected to determine the AUC0-24 of ulonivirine.
Maximum Plasma Concentration (Cmax) of UlonivirineAt designated timepoints (up to 168 hours)Blood samples will be collected to determine the Cmax of ulonivirine.
Time to Maximum Plasma Concentration (Tmax) of UlonivirineAt designated timepoints (up to 168 hours)Blood samples will be collected to determine the Tmax of ulonivirine.

Countries

United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Outcome results

None listed

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