A Study to Investigate the Virologic Efficacy and Safety of VH3810109 + Cabotegravir Compared to Standard of Care (SOC) in Male and Female Adults Living With Human Immunodeficiency Virus (HIV)

NCT ID: NCT05996471

Last Updated: 2026-01-09

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

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

185 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-08-17

Study Completion Date

2028-11-09

Brief Summary

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The study aims at evaluating the efficacy of VH3810109, dosed in accordance with the dosing schedule as either intravenous (IV) infusion or subcutaneous (SC) infusion with recombinant hyaluronidase (rHuPH20), in combination with cabotegravir (CAB) intramuscular (IM) dosed in accordance with the dosing schedule in virologically suppressed, Antiretroviral therapy (ART)-experienced adult participants living with HIV. VH3810109 plus rHuPH20 plus Cabotegravir arm of the study has been discontinued based on preliminary results. The study will be conducted in 3 parts followed by a Long-Term Follow-up phase (LTFU).

Detailed Description

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Conditions

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HIV Infections

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Part 1A: Participants Receiving VH3810109 Formulation 1 plus Cabotegravir

Participants will receive VH3810109 formulation 1 intravenously (IV) and Cabotegravir intramuscularly (IM) every month (QM). Participants from this arm will either transition to Part 2A or discontinue from the study and enter the LTFU period.

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

Part 1B: Participants Receiving VH3810109 plus rHuPH20 plus Cabotegravir

Participants will receive VH3810109 plus rHuPH20 via subcutaneous (SC) infusion and Cabotegravir IM. This arm was discontinued following preliminary results. Participants from this arm will either transition to Part 1A at the next dosing visit or withdraw from the Investigational Product (IP) and enter the LTFU.

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

rHuPH20

Intervention Type BIOLOGICAL

rHuPH20 will be administered.

Part 1C: Participants Receiving SOC ART

Participants in this arm will either transition to Part 2B or Part 2C or discontinue from the study.

Group Type ACTIVE_COMPARATOR

Standard of care (SOC)

Intervention Type DRUG

Pre-baseline SOC antiretroviral therapy (ART) will be administered.

Part 2A: Participants Receiving VH3810109 Formulation 2 plus Cabotegravir Q2M

Participants will receive VH3810109 formulation 2 intravenously (IV) and Cabotegravir intramuscularly (IM) every 2 months (Q2M). Participants from this arm will either transition to Part 3A or discontinue from the study and enter the LTFU period.

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

Part 2B: Participants Receiving VH3810109 Formulation 2 plus Cabotegravir

Participants will receive VH3810109 formulation 2 intravenously (IV) and Cabotegravir intramuscularly (IM) at Day 1, Month 1, Month 2 and then Q2M. Participants from this arm will either transition to Part 3A or discontinue from the study and enter the LTFU period.

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

Part 2C: Participants continuing SOC ART

Participants in this arm will either transition to Part 3B or discontinue from the study.

Group Type ACTIVE_COMPARATOR

Standard of care (SOC)

Intervention Type DRUG

Pre-baseline SOC antiretroviral therapy (ART) will be administered.

Part 3A: Participants continuing VH3810109 Formulation 2 plus Cabotegravir Q2M

Participants will continue to receive VH3810109 formulation 2 intravenously (IV) and Cabotegravir intramuscularly (IM) every 2 months (Q2M).

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

Part 3B: Participants receiving VH3810109 Formulation 2 plus Cabotegravir

Participants will receive VH3810109 formulation 2 intravenously (IV) and Cabotegravir intramuscularly (IM) at Day 1, Month 1, Month 2 and then Q2M.

Group Type EXPERIMENTAL

VH3810109

Intervention Type BIOLOGICAL

VH3810109 will be administered.

Cabotegravir

Intervention Type DRUG

Cabotegravir will be administered.

Interventions

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VH3810109

VH3810109 will be administered.

Intervention Type BIOLOGICAL

Cabotegravir

Cabotegravir will be administered.

Intervention Type DRUG

Standard of care (SOC)

Pre-baseline SOC antiretroviral therapy (ART) will be administered.

Intervention Type DRUG

rHuPH20

rHuPH20 will be administered.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

Age

1. Participant must be 18 to 70 years of age inclusive, at the time of signing the informed consent.

Type of Participant and Disease Characteristics
2. Must be on uninterrupted current regimen for at least 6 months prior to Screening. Any prior switch, defined as a change of a single drug or multiple drugs simultaneously, must have occurred due to tolerability/safety, access to medications, or convenience/simplification, and must NOT have been done for treatment failure (HIV-1 RNA ≥200 c/mL).

Acceptable stable - ARV regimens prior to Screening include at least one NRTI plus:
* INSTI
* NNRTI
* Boosted PI (or atazanavir \[ATV\] unboosted)
* Excludes current use of cabotegravir or fostemsavir

The addition, removal, or switch of a drug(s) that has been used to treat HIV based on antiretroviral properties of the drug constitutes a change in ART with the following limited exceptions:
* Historical changes in formulations of ART drugs or booster drugs will not constitute a change in ART regimen if the data support similar exposures and efficacy, and the change must have been at least 3 months prior to Screening.
* Historical maternal perinatal use of an NRTI when given in addition to an ongoing HAART will not be considered a change in ART regimen.
* A change in dosing scheme of the same drug from twice daily to once daily will not be considered a change in ART regimen if data support similar exposures and efficacy.

For Part 2

• Any participant who has received or is currently receiving an INSTI at the time of screening must be on their first INSTI-containing regimen and must not have used any other INSTIs previously
3. Documented evidence of at least two plasma HIV-1 RNA measurements \<50 c/mL in the 12 months prior to Screening: one within the 6 to 12-month window, and one within 6 months prior to Screening;
4. Plasma HIV-1 RNA \<50 c/mL at Screening;
5. Screening CD4+ T-cell count ≥350 cells/mm3:

Weight
6. Body weight \>=50 kg to \<=115 kg.

Sex
7. Male and/or female Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies, assuring minimal contraception requirements noted below.

All participants participating in the study should be counselled on safer sexual practices including the use and benefit/risk of effective barrier methods (e.g. male condom) and on the risk of HIV transmission to an uninfected partner.

1. Participants who are female at birth are eligible to participate if at least one of the following conditions applies:

* Not pregnant or breastfeeding and at least one of the following conditions applies:

* Is not a participant of childbearing potential (POCBP). OR
* Is a POCBP and using an acceptable contraceptive method during the intervention period (at a minimum until after the last dose of study intervention). The investigator should evaluate the effectiveness of the contraceptive method in relationship to the first dose of study intervention.
* A POCBP must have a negative highly sensitive pregnancy test (urine or serum as required by local regulations) on Day 1, prior to the first dose of study intervention.

* If a urine test cannot be confirmed as negative (e.g., an ambiguous result), a serum pregnancy test is required. In such cases, the participant must be excluded from participation if the serum pregnancy result is positive.
* The investigator is responsible for review of medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a POCBP with an early undetected pregnancy.

QTc 8. QTc Interval \<450 msec.

Phenotypic Sensitivity 9. Viral phenotypic sensitivity to VH3810109 based on IC90 of \<=2 ug/mL and a Maximum Percent Inhibition \>98% using the Monogram PhenoSense mAb Assay on sample obtained at a screening visit.

Informed Consent 10. Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.

Exclusion Criteria

Medical conditions:

• Participants who are pregnant, breastfeeding, plan to become pregnant or breastfeed during the study
* Participants having skin disease or disorder (i.e. infection, inflammation, dermatitis, eczema, drug rash, drug allergy, psoriasis, food allergy, urticaria) or tattoo overlying potential injection sites which may interfere with interpretation of injection site reactions or administration of VH3810109 or CAB
* Participant has a gluteal implant/enhancement (including fillers) overlying the gluteus area or any other area which may significantly interfere with interpretation of injection site reactions
* Participants with known history of cirrhosis with or without viral hepatitis co-infection
* Participants with ongoing or clinically relevant pancreatitis
* Untreated syphilis infection (positive rapid plasma reagin (RPR) at screening) without documentation of treatment. Participants who are at least 7 days post completed treatment are eligible if recruitment is open
* Prior receipt of licensed or investigational HIV monoclonal antibody
* Any evidence of an active Centers for Disease Control and Prevention (CDC) Stage 3 disease except cutaneous Kaposi's sarcoma not requiring systemic therapy. Historical or current CD4 cell counts less than 200 cells/mm\^3 are not exclusionary
* History of sensitivity to any of the study medications or their components or drugs of their class, or a history of drug or other allergy that, in the opinion of the investigator or Medical Monitor, contraindicates their participation
* Any condition which, in the opinion of the investigator, may interfere with the absorption, distribution, metabolism or excretion of the study drugs, cART or render the participant unable to take oral medication
* Treatment with an HIV-1 immunotherapeutic vaccine within 90 days of Screening
* Previous exposure to cabotegravir
* Participant enrolled in a prior or concurrent clinical study that includes a drug intervention within the last 30 days
* Participants with chronic hepatitis B (HBsAg positive) infection
* Individuals who are co-infected with HIV and Hepatitis B virus (HBV) will be excluded.
* Participants with hepatitis C co-infection
* Unstable liver disease (as defined by any of the following: presence of ascites, encephalopathy, coagulopathy, hypoalbuminemia, esophageal or gastric varices, or persistent jaundice or cirrhosis), known biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones or otherwise stable chronic liver disease per investigator assessment).
* Participants who in the investigator's judgment, pose a significant suicidality risk
* Contraindications, as per the current Prescribing Information for cabotegravir.
* Previous hypersensitivity reaction to cabotegravir or
* Contraindicated co-administered drugs:

* Anticonvulsants: Carbamazepine, oxcarbazepine, phenobarbital, phenytoin
* Antimycobacterials: Rifabutin, rifampin, rifapentine
* Glucocorticoid (systemic): Dexamethasone (more than a single-dose treatment)
* Herbal product: St John's wort (Hypericum perforatum)

Prior/Concomitant Therapy:

• Treatment with an HIV-1 immunotherapeutic vaccine within 90 days of Screening.

• Previous exposure to cabotegravir.
* Treatment with any of the following agents within 60 days of screening:

-radiation therapy;
* cytotoxic chemotherapeutic agents;
* any systemic immune suppressant.
* Exposure to an experimental drug or experimental vaccine within either 28 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 the first dose of study medication.
* Current or anticipated need for chronic anti-coagulants.
* Participants receiving any prohibited medication and who are unwilling or unable to switch to an alternate medication.

Prior/Concurrent Clinical Study Experience • Participant enrolled in a prior or concurrent clinical study that includes a drug intervention within the last 30 days.

Diagnostic Assessments • Any acute laboratory abnormality at Screening, which, in the opinion of the investigator, would preclude the participants inclusion in the study of an investigational compound.

• Any evidence of viral resistance based on the presence of any major cabotegravir resistance-associated mutation \[IAS-USA, 2022\] in any historic resistance test result.
* Any verified Grade 4 laboratory abnormality with the exception of Grade 4 triglycerides or lipid abnormalities. A single repeat test is allowed during the Screening period to verify a result.
* Alanine aminotransferase (ALT) \>=3 times the upper limit of normal (ULN)
* Creatinine clearance of \<50 mL/min/1.73 m\^2 via using the refitted, race-neutral Chronic Kidney Disease Epidemiology Collaboration (CKD-EPIcr\_R) method.
* PT \>=Grade 2 (\>=1.25 ULN). A single repeat test is allowed during the Screening period to verify a result.


• To assess any potential impact on participant eligibility with regard to safety, the investigator must refer to the IB and supplements, approved product labels, and/or local prescribing information for detailed information regarding warnings, precautions, contraindications, AEs, drug interactions, and other significant data pertaining to the study drugs.
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

Birmingham, Alabama, United States

Site Status

GSK Investigational Site

Bakersfield, California, United States

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GSK Investigational Site

Los Angeles, California, United States

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GSK Investigational Site

Los Angeles, California, United States

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GSK Investigational Site

Palm Springs, California, United States

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GSK Investigational Site

Sacramento, California, United States

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GSK Investigational Site

San Francisco, California, United States

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GSK Investigational Site

New Haven, Connecticut, United States

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GSK Investigational Site

Washington D.C., District of Columbia, United States

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GSK Investigational Site

Washington D.C., District of Columbia, United States

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GSK Investigational Site

Fort Lauderdale, Florida, United States

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GSK Investigational Site

Ft. Pierce, Florida, United States

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GSK Investigational Site

Miami, Florida, United States

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GSK Investigational Site

Orlando, Florida, United States

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GSK Investigational Site

Pensacola, Florida, United States

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GSK Investigational Site

Sarasota, Florida, United States

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GSK Investigational Site

Vero Beach, Florida, United States

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GSK Investigational Site

West Palm Beach, Florida, United States

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GSK Investigational Site

Decatur, Georgia, United States

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GSK Investigational Site

Chicago, Illinois, United States

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GSK Investigational Site

Boston, Massachusetts, United States

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GSK Investigational Site

Springfield, Massachusetts, United States

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GSK Investigational Site

Southfield, Michigan, United States

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Columbia, Missouri, United States

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Newark, New Jersey, United States

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Albuquerque, New Mexico, United States

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Santa Fe, New Mexico, United States

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GSK Investigational Site

Manhasset, New York, United States

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GSK Investigational Site

New York, New York, United States

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GSK Investigational Site

New York, New York, United States

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GSK Investigational Site

New York, New York, United States

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GSK Investigational Site

The Bronx, New York, United States

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GSK Investigational Site

Greensboro, North Carolina, United States

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GSK Investigational Site

Cincinnati, Ohio, United States

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GSK Investigational Site

Portland, Oregon, United States

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GSK Investigational Site

Philadelphia, Pennsylvania, United States

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GSK Investigational Site

Nashville, Tennessee, United States

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GSK Investigational Site

Austin, Texas, United States

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GSK Investigational Site

Dallas, Texas, United States

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GSK Investigational Site

El Paso, Texas, United States

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GSK Investigational Site

Houston, Texas, United States

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GSK Investigational Site

Houston, Texas, United States

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GSK Investigational Site

Watertown, Wisconsin, United States

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GSK Investigational Site

San Juan, , Puerto Rico

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GSK Investigational Site

San Juan, , Puerto Rico

Site Status

Countries

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United States Puerto Rico

Other Identifiers

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209639

Identifier Type: -

Identifier Source: org_study_id

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