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

NCT ID: NCT07053384

Last Updated: 2025-12-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-07-10

Study Completion Date

2028-03-24

Brief Summary

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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).

Detailed Description

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Conditions

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HIV Infections

Keywords

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VH3810109 N6LS Broadly neutralizing antibody (bNAb) Fostemsavir (FTR) RUKOBIA INSTI-based ART Human Immunodeficiency Virus (HIV) HIV reservoir Adults living with HIV

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

This is an open-label study.

Study Groups

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Participants receiving SOC INSTI-based ART plus VH3810109

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

SOC INSTI-based ART

Intervention Type DRUG

A SOC INSTI-based ART regimen will be administered.

Participants receiving SOC INSTI-based ART plus VH3810109 plus FTR

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Fostemsavir (FTR)

Intervention Type DRUG

Fostemsavir will be administered.

SOC INSTI-based ART

Intervention Type DRUG

A SOC INSTI-based ART regimen will be administered.

Participants receiving standard of care (SOC) integrase strand transfer inhibitor (INSTI)-based ART

Group Type ACTIVE_COMPARATOR

SOC INSTI-based ART

Intervention Type DRUG

A SOC INSTI-based ART regimen will be administered.

Interventions

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VH3810109

VH3810109 will be administered.

Intervention Type BIOLOGICAL

Fostemsavir (FTR)

Fostemsavir will be administered.

Intervention Type DRUG

SOC INSTI-based ART

A SOC INSTI-based ART regimen will be administered.

Intervention Type DRUG

Other Intervention Names

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RUKOBIA

Eligibility Criteria

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Inclusion Criteria

* 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.

Exclusion Criteria

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.

* Participants with severe hepatic impairment.
* Advanced MAFLD and advanced non-alcoholic steatohepatitis, if evidence for substantial fibrosis (fibrosis score ≥F2) or evidence of cirrhosis.
* Unstable liver disease.
* History of liver cirrhosis with or without hepatitis viral co-infection.

NEUROPSYCHIATRIC CONDITIONS

• Participants who pose a significant suicide risk.

LABORATORY DIAGNOSTIC ASSESSMENTS

* Participants who are experiencing (Population 1) or are known to have initiated ART during (Population 2) acute HIV infection.
* Any verified Grade 4 laboratory abnormality at Screening, excluding asymptomatic elevations of lipids or CPK.
* Alanine transferase (ALT) \>=3 times the upper limit of normal (ULN) at Screening.
* Estimated glomerular filtration rate (eGFR) of \<60 mL/min/1.73 m\^2.
* Hemoglobin \>=Grade 2 at Screening.
* Platelets \>=Grade 2 at Screening.
* Absolute Neutrophil Count (ANC) ≥Grade 2 at Screening.
* Any acute abnormality at Screening, which, in the opinion of the investigator, would preclude the participant's inclusion in an interventional clinical study.

Population 2 only • Two or more plasma HIV-1 RNA results \>=50 c/mL in the 18 months prior to Screening.

INFECTIOUS DISEASES

* Active hepatitis B virus (HBV) co-infection.
* Active hepatitis C virus (HCV) co-infection.
* Participant has untreated syphilis before enrolment.
* Known current untreated or incompletely treated active Mycobacterium TB infection.

ANTIRETROVIRAL RESISTANCE

• Known major resistance-associated mutations to second-generation INSTIs or to antiretroviral (ARV) agents from 2 or more drug classes.

PRIOR AND CONCOMITANT MEDICATIONS

* Prior use of any of the following agents:

o long-acting ARVs (any dose in the past 24 months or within 5 half-lives \[whichever is longer\])

o FTR (any lifetime use)
* HIV-1 immunotherapeutic vaccines or prophylactic vaccines (any lifetime use)
* HIV-1 monoclonal antibody therapy (any lifetime use).
* Prior receipt of any approved or experimental non-HIV vaccination within 2 weeks prior to study enrolment.
* History of systemic corticosteroids, immunosuppressive anti-cancer, interleukins, systemic interferons, or systemic chemotherapy, within 6 months prior to Screening.
* Participant has received an experimental drug or experimental vaccine within either 30 days, 5 half-lives of the test agent, or twice the duration of the biological effect of the test agent (whichever is longer), prior to enrolment.
* Treatment with any of the following agents within 30 days of enrolment:

o radiation therapy

o cytotoxic chemotherapeutic agents
* anti-tuberculosis therapy
* immunomodulators that alter immune responses such as chronic systemic corticosteroids, interleukins, or interferons.
* Participant is receiving any protocol-defined prohibited medication and is unwilling or unable to switch to an alternate medication. Prohibited medications must be stopped within 7 days (or 14 days if the drug is a potential CYP3A4 enzyme inducer) or 5 half-lives (whichever is longer), prior to enrolment.

Population 1 only • Known use of PrEP or PEP within \<30 days (for oral agents) or \<52 weeks (for LA parenteral agents) of HIV-1 diagnosis. Participants with a documented seronegative result \>=30 days after the last dose of oral PrEP or PEP (or \>=52 weeks after the last dose of LA PrEP) are not excluded.

Population 2 only

• Current use of NNRTI-containing ART.

OTHER EXCLUSIONS

* History or presence of allergy or intolerance to the study drugs or their components or drugs of their class, or a history of drug or other allergy that contraindicates study participation.
* Any condition which may interfere with the absorption, distribution, metabolism or excretion of the study drugs or render the participant unable to receive study drugs.
* Any pre-existing physical or mental condition (including substance use disorder) which, may interfere with the participant's ability to comply with the dosing schedule and/or protocol evaluations or which may compromise the safety of the participant.
* Participant is currently participating in, or anticipates being selected for, any other interventional study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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ViiV Healthcare

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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GSK Investigational Site

Bakersfield, California, United States

Site Status RECRUITING

GSK Investigational Site

San Diego, California, United States

Site Status RECRUITING

GSK Investigational Site

Ft. Pierce, Florida, United States

Site Status RECRUITING

GSK Investigational Site

Orlando, Florida, United States

Site Status RECRUITING

GSK Investigational Site

Chicago, Illinois, United States

Site Status RECRUITING

GSK Investigational Site

Kansas City, Missouri, United States

Site Status RECRUITING

GSK Investigational Site

St Louis, Missouri, United States

Site Status RECRUITING

GSK Investigational Site

New York, New York, United States

Site Status RECRUITING

GSK Investigational Site

Cincinnati, Ohio, United States

Site Status RECRUITING

GSK Investigational Site

Philadelphia, Pennsylvania, United States

Site Status RECRUITING

GSK Investigational Site

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

GSK Investigational Site

Dallas, Texas, United States

Site Status RECRUITING

GSK Investigational Site

Dallas, Texas, United States

Site Status RECRUITING

GSK Investigational Site

Brussels, , Belgium

Site Status RECRUITING

GSK Investigational Site

Ghent, , Belgium

Site Status RECRUITING

GSK Investigational Site

Aarhus, , Denmark

Site Status RECRUITING

GSK Investigational Site

Hvidovre, , Denmark

Site Status RECRUITING

GSK Investigational Site

Rotterdam, , Netherlands

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Barcelona, , Spain

Site Status RECRUITING

GSK Investigational Site

Córdoba, , Spain

Site Status RECRUITING

GSK Investigational Site

La Laguna Santa Cruz, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Madrid, , Spain

Site Status RECRUITING

GSK Investigational Site

Palma de Mallorca, , Spain

Site Status RECRUITING

GSK Investigational Site

Palma de Mallorca, , Spain

Site Status RECRUITING

GSK Investigational Site

Seville, , Spain

Site Status RECRUITING

GSK Investigational Site

Valencia, , Spain

Site Status RECRUITING

GSK Investigational Site

Valencia, , Spain

Site Status RECRUITING

GSK Investigational Site

London, , United Kingdom

Site Status RECRUITING

GSK Investigational Site

London, , United Kingdom

Site Status RECRUITING

GSK Investigational Site

London, , United Kingdom

Site Status RECRUITING

Countries

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United States Belgium Denmark Netherlands Spain United Kingdom

Central Contacts

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US GSK Clinical Trials Call Center

Role: CONTACT

Phone: 877-379-3718

Email: [email protected]

EU GSK Clinical Trials Call Center

Role: CONTACT

Phone: +44 (0) 20 89904466

Email: [email protected]

Facility Contacts

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US GSK Clinical Trials Call Center

Role: primary

EU GSK Clinical Trials Call Centre

Role: backup

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EU GSK Clinical Trials Call Centre

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Other Identifiers

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2025-520629-19-00

Identifier Type: OTHER

Identifier Source: secondary_id

221794

Identifier Type: -

Identifier Source: org_study_id