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A Study of Islatravir (ISL) and Ulonivirine (ULO) Once Weekly (QW) in Virologically Suppressed Adults With Human Immunodeficiency Virus Type 1 (HIV-1) (MK-8591B-060)

NCT06891066 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 150

Last updated 2025-10-16

No results posted yet for this study

Summary

Investigators are trying to find better treatments for people with HIV-1. In this clinical study, investigators want to see how well a new treatment called ISL+ULO, taken once a week, works compared to an existing treatment called BIC/FTC/TAF, which is taken every day. Investigators will check how many people still have a high level of the virus in their blood after 24 weeks. The investigators also want to understand if the new treatment, MK-8591B, is safe and how well people can handle it.

Conditions

  • Human Immunodeficiency Virus Type 1 (HIV-1) Infection

Interventions

DRUG

ISL

ISL 1mg oral capsule will be administered as 2mg orally (each capsule 1mg) as part of ISL and ULO combination to group 1 participants for 96 weeks and for group 2 participants in part 2 of the study from 49 to 96 weeks.

DRUG

ULO

ULO 100mg oral tablet will be administered as 200mg (2 tablets) orally as part of ISL and ULO combination to group 1 participants for 96 weeks and for group 2 participants in part 2 of the study from 49 to 96 weeks.

DRUG

BIC/FTC/TAF

BIC 50mg oral tablet/FTC 200mg oral tablet/TAF 25 mg oral tablet administered orally to group 2 participants for 48 weeks in part 1 of the study.

Sponsors & Collaborators

Principal Investigators

  • Medical Director · Merck Sharp & Dohme LLC

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-04-14
Primary Completion
2027-08-10
Completion
2031-09-30
FDA Drug
Yes

Countries

  • United States
  • Australia
  • Puerto Rico
  • Switzerland

Study Locations

More Related Trials

Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06891066 on ClinicalTrials.gov