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HIV InfectionsPhase 2NCT06061081

A Study to Investigate the Antiviral Effect, Safety, Tolerability and Pharmacokinetics of VH3739937 in in Treatment-Naive Adults Living With HIV-1

A Phase 2 study testing VH3739937 in people with HIV Infections, run by ViiV Healthcare at 18 sites in 6 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The primary purpose of this study is to assess the antiviral activity of VH3739937 in Human Immunodeficiency Virus Type-1 (HIV-1) infected treatment naive (TN) participants during monotherapy. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
HIV Infections
What is being tested?
VH3739937
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
21 participants
Where
18 sitesin 6 countries
Study dates
21 Dec 2023to 27 Aug 2024
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participants who are overtly healthy (other than HIV infection) as determined by the Investigator or medically qualified designee based on a medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring
  • Positive HIV antibody test
  • Treatment-naïve: No Antiretrovirals (ARVs) (in combination or monotherapy) received after the diagnosis of HIV-1 infection
  • Body weight ≥50.0 kilogram (kg) (110 pounds [lbs]) for men and ≥45.0 kg (99 lbs) for women and BMI for all participants within the range 18.5-35.0 kilogram per meter square (kg/m^2).
  • Capable of giving signed informed consent
  • Participant must be willing and able to start Combination Antiretrovial Therapy (cART) as selected with the Investigator on Study Day 8 (except in the case of early termination, clinically relevant AE/SAE, lab abnormality, the withdrawal of consent, lost to follow-up, etc., where circumstances could dictate otherwise).

Who cannot join

  • Current or chronic history of liver disease or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones)
  • Participants with primary HIV infection, evidenced by acute retroviral syndrome (e.g., fever, malaise, fatigue, etc) and/or evidence of recent (within 3 months) documented viremia without antibody production and/or evidence of recent (within 3 months) documented seroconversion
  • Myocardial infarction, acute coronary syndrome, unstable angina, stroke, transient ischemic attack, or intermittent claudication in the past 3 months
  • The participant has received an investigational HIV vaccine (immunotherapeutic or immunomodulatory)
  • Regular use of drugs of abuse
  • Sensitivity to heparin or heparin-induced thrombocytopenia

Trial locations and contacts

18 sites in 6 countries.

18 sites in 6 countries

Spain7 sites
  • GSK Investigational Site

    A Coruña, 15006

  • GSK Investigational Site

    Alicante, 03010

  • GSK Investigational Site

    Granada, 18014

  • GSK Investigational Site

    Jerez de la Frontera, 11407

  • GSK Investigational Site

    Madrid, 28006

  • GSK Investigational Site

    Madrid, 28222

  • GSK Investigational Site

    Vitoria-Gasteiz, 1009

Other trials in Spain

Italy4 sites
  • GSK Investigational Site

    Brescia, 25123

  • GSK Investigational Site

    Genova, 16132

  • GSK Investigational Site

    Milan, 20142

  • GSK Investigational Site

    Roma, 00133

Other trials in Italy

United States3 sites
  • GSK Investigational Site

    Bakersfield, California, 93301

  • GSK Investigational Site

    Dallas, Texas, 75246

  • GSK Investigational Site

    Miami, Florida, 33136

Other trials in United States

Argentina2 sites
  • GSK Investigational Site

    Buenos Aires, C1181ACH

  • GSK Investigational Site

    Rosario, 2000

Other trials in Argentina

Greece1 site
  • GSK Investigational Site

    Athens, 12462

Other trials in Greece

Poland1 site
  • GSK Investigational Site

    Warsaw, 01-201

Other trials in Poland

About this study

Official title: A Randomized, Double-Blind (Sponsor-Unblinded), Placebo-Controlled, Adaptive Study to Investigate the Antiviral Effect, Safety, Tolerability and Pharmacokinetics of VH3739937 in Treatment-Naïve Adults Living With HIV-1

The primary purpose of this study is to assess the antiviral activity of VH3739937 in Human Immunodeficiency Virus Type-1 (HIV-1) infected treatment naive (TN) participants during monotherapy.

Conditions
HIV Infections
Being tested
VH3739937, Placebo
Keywords
VH3739937, Treatment Naïve, HIV-1
Medical subject headings
HIV Infections

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VH3739937Drug

    VH3739937 will be administered.

  • PlaceboDrug

    Placebo will be administered.

Study groups in NCT06061081
Study groupRoleWhat they receive
VH3739937 Low Dose GroupExperimentalParticipants received a low dose of VH3739937 as loading Dose 1 (LD1) on Day 1, followed by a once-daily (QD) dose of VH3739937 as maintenance Dose 1 (MD1) from Days 2 through 7, where MD1 was lower than LD1. On Day 8, all participants transitioned to standard-of-care (SOC) combination antiretroviral therapy (cART) and continued study assessments through Day 25.
Receives: Drug: VH3739937
VH3739937 Medium Dose GroupExperimentalParticipants received a medium dose of VH3739937 as loading Dose 2 (LD2) on Day 1, followed by a QD dose of VH3739937 as maintenance Dose 2 (MD2) from Days 2 through 7, where MD2 was lower than LD2. On Day 8, all participants transitioned to SOC cART and continued study assessments through Day 25.
Receives: Drug: VH3739937
VH3739937 High Dose GroupExperimentalParticipants received a single high dose (Dose 3) of VH3739937 on Day 1. On Day 8, all participants transitioned to SOC cART and continued study assessments through Day 25.
Receives: Drug: VH3739937
Placebo once daily (QD)Placebo comparatorParticipants received Placebo QD from Day 1 through Day 7. On Day 8, all participants transitioned to SOC cART and continued study assessments through Day 25.
Receives: Drug: Placebo
Placebo single dose (SD)Placebo comparatorParticipants received Placebo SD on Day 1. On Day 8, all participants transitioned to SOC cART and continued study assessments through Day 25.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Maximum Change From Baseline in Plasma Human Immunodeficiency Virus-1 (HIV-1) Ribonucleic Acid (RNA).

    Plasma samples were collected for the quantitative analysis of plasma HIV-1 RNA. The maximum change from baseline was calculated by determining the largest change from baseline value across all assessment timepoints. This is identified by subtracting the lowest post-dose visit value up to Day 8 (inclusive) from the baseline value. The baseline was defined as the most recent pre-dose assessment with a valid, non-missing value, including measurements from any unscheduled visits.

    Measured: From Day 1 to Day 8

Secondary outcomes (15)
  1. Number of Participants With Serious Adverse Events (SAEs) During Study Intervention Period

    An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement.

    Measured: From Day 1 to Day 8

  2. Number of Reported Deaths

    Measured: From Day 1 to Day 8

  3. Number of Participants With Adverse Events (AEs) Leading to Discontinuation

    An AE is any untoward medical occurrence (an unfavourable/unintended sign - including an abnormal laboratory finding), symptom, or disease (new or exacerbated) in a clinical study participant that is temporally associated with the study intervention. The AE may or may not be considered related to the study intervention. A participant is considered to have discontinued from the study if no new study procedure has been performed or no new information has been collected for him/her since the date of last contact.

    Measured: From Day 1 to Day 8

  4. Maximum Observed Plasma Concentration (Cmax) of VH3739937 on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h post-dose on Day 1

  5. Time to Maximum Concentration (Tmax) of VH3739937 on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis. Tmax is defined as the time to reach maximum observed plasma concentration (Cmax).

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h post-dose on Day 1

  6. Concentration at 24 Hours (C24) Post Dose of VH3739937 on QD Dosing

    C24 is defined as concentration at nominal time of 24 hours after dosing. Blood samples were collected at indicated timepoints for PK analysis.

    Measured: At 24h post-dose on Day 1

  7. Area Under the Concentration-time Curve From Zero to 24h (AUC[0-24]) of VH3739937 on QD Dosing.

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h, 24h post-dose on Day 1

  8. Cmax of VH3739937 at Steady State (Cmax, ss) on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h post-dose on Day 7

  9. Tmax of VH3739937 at Steady State (Tmax, ss) on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis. Tmax is defined as the time to reach the maximum observed plasma concentration (Cmax).

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h post-dose on Day 7

  10. C24 of VH3739937 at Steady State (C24, ss) on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: At 24h post-dose on Day 7

  11. AUC(0-24) of VH3739937 at Steady State (AUC[0-24], ss) on QD Dosing

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h, 24h post-dose on Day 7

  12. Cmax Post Single Dose of VH3739937

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h, 24h, 48h, 72h, 96h, 120h, 144h, 168h post-dose (single dose administered on Day 1)

  13. Tmax Post Single Dose of VH3739937

    Blood samples were collected at indicated timepoints for PK analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h, 24h, 48h, 72h, 96h, 120h, 144h, 168h post-dose (single dose administered on Day 1)

  14. Concentration at 168 Hours (C168) Post Single Dose of VH3739937

    C168 is defined as concentration of VH3739937 at a nominal time of 168 hours after dosing. Blood samples were collected at indicated timepoints for PK analysis.

    Measured: At 168 hours post-dose (single dose administered on Day 1)

  15. Area Under the Concentration-time Curve From Zero to 168h [AUC(0-168)] Post Single Dose of VH3739937

    Blood samples were collected at indicated timepoints for analysis.

    Measured: Pre-dose, 1 hour (h), 2 h, 4h, 5h, 6h, 7h, 8h, 9h, 10h, 12h, 24h, 48h, 72h, 96h, 120h, 144h, 168h post-dose (single dose administered on Day 1)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Sep 2023
  2. Study start21 Dec 2023
  3. Primary completion27 Aug 2024
  4. Study completion27 Aug 2024

Why it stopped: Sponsor decision

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
21 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06061081
Sponsor's protocol ID
212580
Other IDs
2023-505780-37-00, 2023
Status last verified
Sep 2025
First submitted
22 Sep 2023
Last updated
20 Oct 2025
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers may request access to anonymized individual patient-level data (IPD) and related study documents of the eligible studies via the Data Sharing Portal. Details on GSK's data sharing criteria can be found at: https://www.gsk.com/en-gb/innovation/trials/data-transparency/

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing VH3739937 in people with HIV Infections, run by ViiV Healthcare at 18 sites in 6 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 20 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 18 sites in Spain, Italy, United States, Argentina, Greece and 1 more country. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 20 Oct 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Maximum Change From Baseline in Plasma Human Immunodeficiency Virus-1 (HIV-1) Ribonucleic Acid (RNA). (time frame: From Day 1 to Day 8). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Oct 2025.

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