Islatravir + Ulonivirine for HIV

No longer recruiting at 25 trial locations
Age: 18+
Sex: Any
Trial Phase: Phase 2
Sponsor: Merck Sharp & Dohme Corp.
Must be taking: BIC/FTC/TAF
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)
Prior Safety DataThis treatment has passed at least one previous human trial

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial tests a new combination of medications, islatravir and ulonivirine, for individuals with HIV-1 who have successfully managed their virus with their current treatment. The goal is to assess the safety and tolerability of these new medications compared to the standard treatment (BIC/FTC/TAF, a combination of antiretroviral drugs). This trial may suit someone who has maintained a stable HIV treatment for at least six months with no detectable virus in their blood. Participants will either continue their current treatment or switch to the new combination for the study. As a Phase 2 trial, the research focuses on evaluating the treatment's effectiveness in an initial, smaller group of people.

Do I have to stop taking my current medications for the trial?

The trial does not specify if you need to stop taking your current medications, but it requires that you have been on a specific HIV medication (BIC/FTC/TAF) for at least 6 months. It's best to discuss your current medications with the trial team to get a clear answer.

Is there any evidence suggesting that this trial's treatments are likely to be safe?

Research has shown that the combination of islatravir and ulonivirine is generally well-tolerated. Safety results indicate that very few people stopped using the treatment due to side effects. In another study, 17.4% of participants taking islatravir and ulonivirine reported drug-related side effects, slightly higher than the 10% who experienced side effects with the standard treatment of BIC/FTC/TAF. However, only 2.5% of those on islatravir and ulonivirine discontinued due to these side effects. This suggests that while some side effects occur, they are usually not severe enough to cause discontinuation. Overall, the data so far shows that the treatment has a manageable safety profile.12345

Why are researchers excited about this trial's treatments?

Researchers are excited about the combination of Islatravir and Ulonivirine for HIV treatment because it offers a unique approach compared to standard treatments like BIC/FTC/TAF. Islatravir, a novel nucleoside reverse transcriptase translocation inhibitor (NRTTI), works by blocking HIV replication at an early stage, which is different from most current options. Ulonivirine, a new non-nucleoside reverse transcriptase inhibitor (NNRTI), complements this by targeting the virus through another pathway. Additionally, these combinations being tested in once-weekly doses could simplify treatment regimens, potentially improving adherence and outcomes for individuals living with HIV.

What evidence suggests that this trial's treatments could be effective for HIV?

Research has shown that the combination of islatravir and ulonivirine effectively controls HIV-1. In this trial, participants will receive different doses of this combination, with each group testing a specific dose level. Studies have shown promising results in maintaining viral control, with data revealing that taking islatravir and ulonivirine once a week kept the virus suppressed for 24 weeks. This is encouraging for those who prefer less frequent dosing. Some drug-related side effects were reported, but they were generally manageable. Overall, these findings suggest that this combination could be a strong option for managing HIV-1.12346

Who Is on the Research Team?

MD

Medical Director

Principal Investigator

Merck Sharp & Dohme LLC

Are You a Good Fit for This Trial?

Adults over 18 with HIV-1 who've been virologically suppressed for at least 6 months using BIC/FTC/TAF can join. They must have a CD4+ T-cell count >200 cells/mm^3 and an HIV-1 RNA <50 copies/mL. Women can't be pregnant, breastfeeding, or planning to conceive; they must use effective contraception or practice abstinence.

Inclusion Criteria

I am a woman of childbearing potential and use highly effective birth control or practice long-term abstinence.
I have been on BIC/FTC/TAF and my viral load has been low for over 6 months.
I am not pregnant or breastfeeding.
See 3 more

Exclusion Criteria

Has a history or current evidence of any condition (including active tuberculosis infection), therapy, laboratory abnormality or other circumstance (including drug or alcohol use or dependence) that might, in the opinion of the investigator, confound the results of the study or interfere with the participant's participation for the full duration of the study
I am a woman and do not plan to get pregnant or donate eggs during the study.
I have an active hepatitis C or B infection.
See 7 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive ISL + ulonivirine or placebo to ISL + ulonivirine, and BIC/FTC/TAF or placebo to BIC/FTC/TAF

96 weeks

Follow-up

Participants are monitored for safety and effectiveness after treatment

≥6 months

Long-term follow-up

Participants who received ISL + ulonivirine will be followed for long-term safety and effectiveness

Up to 144 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • BIC/FTC/TAF
  • Islatravir
  • Ulonivirine
Trial Overview The trial is testing the safety of Islatravir (ISL) + Ulonivirine in adults with HIV-1 compared to a placebo. Participants are randomly assigned to receive either the study drugs or placebos while their health data is closely monitored.
How Is the Trial Designed?
4Treatment groups
Experimental Treatment
Active Control
Group I: Group 3: ISL 20 mg + Ulonivirine 400 mgExperimental Treatment3 Interventions
Group II: Group 2: ISL 20 mg + Ulonivirine 200 mgExperimental Treatment4 Interventions
Group III: Group 1: ISL 20 mg + Ulonivirine 100 mgExperimental Treatment4 Interventions
Group IV: Group 4: BIC/FTC/TAFActive Control3 Interventions

Find a Clinic Near You

Who Is Running the Clinical Trial?

Merck Sharp & Dohme Corp.

Lead Sponsor

Trials
2,287
Recruited
4,582,000+
Chirfi Guindo profile image

Chirfi Guindo

Merck Sharp & Dohme Corp.

Chief Medical Officer

Engineering degree from Ecole Centrale de Paris, MBA from New York University Stern School of Business

Robert M. Davis profile image

Robert M. Davis

Merck Sharp & Dohme Corp.

Chief Executive Officer since 2021

J.D. from Northwestern University Pritzker School of Law, MBA from Northwestern University Kellogg Graduate School of Management, Bachelor's in Finance from Miami University

Merck Sharp & Dohme LLC

Lead Sponsor

Trials
4,096
Recruited
5,232,000+
Chirfi Guindo profile image

Chirfi Guindo

Merck Sharp & Dohme LLC

Chief Marketing Officer since 2022

Degree in Engineering from Ecole Centrale de Paris, MBA from New York University Stern School of Business

Robert M. Davis profile image

Robert M. Davis

Merck Sharp & Dohme LLC

Chief Executive Officer since 2021

JD from Northwestern University Pritzker School of Law, MBA from Northwestern University Kellogg Graduate School of Management, Bachelor's in Finance from Miami University

Citations

Merck to Present New Data Highlighting Research ...Data from two Phase 1 trials evaluating the safety and tolerability of weekly ulonivirine and drug interactions between islatravir and ...
NCT06891066 | A Study of Islatravir (ISL) and Ulonivirine ...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 ...
Islatravir Patient Drug Record | NIHAvailable data was presented at IAS 2025 and showed that islatravir plus ulonivirine (given at three different dose levels) was effective in maintaining viral ...
Once-weekly oral ART with ulonivirine plus islatravirOnce-weekly oral ART with ulonivirine plus islatravir: 24-week phase 2 results. Back to the "HIV and Co-Infections News" list. HIV Treatment.
Investigational Once-Weekly ART Combo Maintained Viral ...Drug-related adverse events occurred in 17.4% receiving islatravir/ulonivirine and 10% receiving BIC/FTC/TAF, with 2.5% receiving islatravir/ ...
Clinical Study of Islatravir (ISL) and Ulonivirine (ULO) in ...The main objective of this study is to investigate and evaluate the safety, tolerability, and efficacy of Islatravir (ISL) and Ulonivirine (ULO) ...
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