A Study to Investigate the Use of VH3810109 With or Without Fostemsavir (FTR) to Reduce the Size and Activity of the Viral Reservoir in People Living With HIV
ENTRANCE
An Exploratory Phase 1b, Multicenter, Randomized, Open-Label Study to Investigate the Impact of the Administration of Intravenous VH3810109 With or Without Oral Fostemsavir in Combination With Integrase Inhibitor-Based Antiretroviral Therapy on the Viral Reservoir in Adults Living With HIV-1
2 other identifiers
interventional
107
6 countries
41
Brief Summary
This study investigates the use of VH3810109 with or without FTR to reduce the size and activity of the HIV viral reservoir in two sub-populations of people living with HIV: treatment-naïve adults (Population 1) and treatment-experienced adults currently taking a standard of care (SOC) integrase strand transfer inhibitor (INSTI)-based antiretroviral therapy (ART) regimen (Population 2).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1 hiv-infections
Started Jul 2025
Typical duration for phase_1 hiv-infections
41 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 26, 2025
CompletedFirst Posted
Study publicly available on registry
July 8, 2025
CompletedStudy Start
First participant enrolled
July 10, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 22, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
September 6, 2028
March 24, 2026
March 1, 2026
1.5 years
June 26, 2025
March 23, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change from baseline in cell-associated HIV-1 RNA transcripts per million cluster of differentiation 4 (CD4+) T cells
From Baseline (Day 1) to Month 12
Secondary Outcomes (8)
Change from baseline in total, intact, and defective proviral HIV-1 DNA per million CD4+ T cells
From Baseline (Day 1) to Month 12
Absolute change in cell-associated HIV-1 RNA/proviral DNA ratios in CD4+ T cells
From Baseline (Day 1) to Month 12
Absolute values for p24+ CD4+ T cell count
From Baseline (Day 1) to Month 12
Change from baseline in number of p24+ CD4+ T cells
From Baseline (Day 1) to Month 12
Absolute values for HIV-1-specific CD8+ T cell count
From Baseline (Day 1) to Month 12
- +3 more secondary outcomes
Study Arms (3)
Participants receiving standard of care (SOC) integrase strand transfer inhibitor (INSTI)-based ART
ACTIVE COMPARATORParticipants receiving SOC INSTI-based ART plus VH3810109
EXPERIMENTALParticipants receiving SOC INSTI-based ART plus VH3810109 plus FTR
EXPERIMENTALInterventions
VH3810109 will be administered.
Fostemsavir will be administered.
A SOC INSTI-based ART regimen will be administered.
Eligibility Criteria
You may qualify if:
- Age between 18 years and 70 years old at the time of obtaining informed consent.
- Persons of any sex or gender are eligible. Note: Participants of childbearing potential (POCBP) are eligible to participate if not pregnant, not lactating, and agreeing to adhere to study requirements for use of contraception and pregnancy avoidance.
- Participant has a documented diagnosis of HIV-1 infection Note: Participants in Population 1 must have a documented positive HIV antibody result available for Screening.
- Population 1 only:
- Plasma HIV-1 RNA \>=2000 copies/milliliter (c/mL) at Screening.
- CD4+ T cell count \>=300 cells/microliter (μL) at Screening.
- Antiretroviral treatment naïve, defined as no exposure to ART after a diagnosis of HIV-1 infection, prior to enrollment.
- Population 2 only:
- Participant is stably virologically suppressed (plasma HIV-1 RNA \<50 c/mL).
- Documented evidence of uninterrupted treatment with oral non-boosted INSTI-based ART for at least 6 months prior to Screening, as well as uninterrupted treatment with ART (any guideline-recommended oral regimen) for at least 24 months prior to Screening.
- CD4+ T cell count \>=450 cells/μL at Screening.
- Body weight \>=50 kg to \<=115 kg.
- Participant is capable of giving written informed consent, which includes adherence to the requirements and restrictions listed in the consent form and in the protocol.
You may not qualify if:
- CONCURRENT MEDICAL CONDITIONS \& MEDICAL HISTORY
- Participant is pregnant, breastfeeding, or planning to become pregnant or breastfeed during the study.
- Participant has documented diagnosis of HIV-2 infection.
- Participant is known to have acquired HIV via perinatal transmission.
- Any evidence of a current or known past Center for Disease Control and Prevention (CDC) Stage 3 disease.
- Any ongoing malignancy or history of systemic cancers, such as Kaposi's sarcoma and lymphoma, or other virus-associated malignancies.
- Ongoing or clinically relevant pancreatitis.
- Current HIV-related kidney disease.
- History of or active HIV-associated dementia or progressive multifocal leukoencephalopathy.
- CARDIAC \& CARDIOVASCULAR CONDITIONS
- Participants who are at clinically significant risk of cardiovascular disease.
- Ongoing or any lifetime history of clinically significant cardiovascular or cardiac disease.
- Confirmed QTcF value outside normal range at Screening or Day 1.
- HEPATIC CONDITIONS
- History of clinically relevant hepatitis in the 6 months prior to Screening.
- +44 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- ViiV Healthcarelead
Study Sites (41)
GSK Investigational Site
Bakersfield, California, 93301, United States
GSK Investigational Site
San Diego, California, 92103, United States
GSK Investigational Site
Ft. Pierce, Florida, 34982, United States
GSK Investigational Site
Orlando, Florida, 32803, United States
GSK Investigational Site
Chicago, Illinois, 60611, United States
GSK Investigational Site
Kansas City, Missouri, 64111, United States
GSK Investigational Site
St Louis, Missouri, 63110, United States
GSK Investigational Site
New York, New York, 10032, United States
GSK Investigational Site
Cincinnati, Ohio, 45267, United States
GSK Investigational Site
Philadelphia, Pennsylvania, 19104, United States
GSK Investigational Site
Pittsburgh, Pennsylvania, 15213, United States
GSK Investigational Site
Dallas, Texas, 75208, United States
GSK Investigational Site
Dallas, Texas, 75246, United States
GSK Investigational Site
Brussels, 1000, Belgium
GSK Investigational Site
Ghent, 9000, Belgium
GSK Investigational Site
Aarhus, 8200, Denmark
GSK Investigational Site
Hvidovre, 2650, Denmark
GSK Investigational Site
Rotterdam, 3015 GD, Netherlands
GSK Investigational Site
Barcelona, 08003, Spain
GSK Investigational Site
Barcelona, 08026, Spain
GSK Investigational Site
Barcelona, 08035, Spain
GSK Investigational Site
Barcelona, 08036, Spain
GSK Investigational Site
Barcelona, 08916, Spain
GSK Investigational Site
Barcelona, 8907, Spain
GSK Investigational Site
Córdoba, 14004, Spain
GSK Investigational Site
La Laguna Santa Cruz, 38320, Spain
GSK Investigational Site
Madrid, 28020, Spain
GSK Investigational Site
Madrid, 28031, Spain
GSK Investigational Site
Madrid, 28034, Spain
GSK Investigational Site
Madrid, 28040, Spain
GSK Investigational Site
Madrid, 28041, Spain
GSK Investigational Site
Madrid, 28046, Spain
GSK Investigational Site
Madrid, 28224, Spain
GSK Investigational Site
Palma de Mallorca, 07120, Spain
GSK Investigational Site
Palma de Mallorca, 7198, Spain
GSK Investigational Site
Seville, 41013, Spain
GSK Investigational Site
Valencia, 46014, Spain
GSK Investigational Site
Valencia, 46026, Spain
GSK Investigational Site
London, NW3 2QG, United Kingdom
GSK Investigational Site
London, SE1 7EH, United Kingdom
GSK Investigational Site
London, W2 1NY, United Kingdom
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- NONE
- Masking Details
- This is an open-label study.
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 26, 2025
First Posted
July 8, 2025
Study Start
July 10, 2025
Primary Completion (Estimated)
January 22, 2027
Study Completion (Estimated)
September 6, 2028
Last Updated
March 24, 2026
Record last verified: 2026-03
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP, ICF, CSR
- Time Frame
- Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or asset(s) with development terminated across all indications.
- Access Criteria
- Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension may be granted, when justified, for up to 6 months.
Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.viiv-studyregister.com/documents/About\_ViiV\_Patient\_Level\_Data\_Sharing\_Final\_25Sep2023.pdf