HIV Vaccine + Adjuvant for HIV Prevention

Not currently recruiting at 9 trial locations
Age: 18 - 65
Sex: Any
Trial Phase: Phase 1
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)
Stay on Your Current MedsYou can continue your current medications while participating
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial explores a potential vaccine for preventing HIV, focusing on its safety and ability to trigger an immune response in healthy adults. Researchers test different doses and methods of administering the vaccine to find the safest and most effective approach. The trial divides participants into groups, each trying different methods. Individuals who are HIV-negative, generally healthy, and interested in contributing to HIV prevention might be a good fit for this study. As a Phase 1 trial, participants will be among the first to receive this new treatment, helping researchers understand its effects in people.

Do I need to stop my current medications to join the trial?

The trial protocol does not specify if you need to stop taking your current medications. However, certain medications like immunosuppressive drugs, recent vaccines, and treatments for specific conditions may affect eligibility. It's best to discuss your current medications with the trial team to determine if they might impact your participation.

Do I need to stop my current medications to join the trial?

The trial protocol does not specify if you need to stop taking your current medications. However, certain medications like immunosuppressive drugs and recent vaccines may affect eligibility, so it's best to discuss your specific situation with the trial team.

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

Research has shown that the N332-GT5 gp140, a component of the HIV vaccine under testing, remains in the early stages of human trials. Detailed safety information is not yet available. However, earlier studies have demonstrated promising safety results for the saponin/MPLA nanoparticles (SMNP), which enhance the immune response to the vaccine. These studies found that SMNP was well-tolerated in pre-human tests.

The current study seeks to determine a safe dose and method for administering the vaccine and adjuvant. As a phase 1 trial, the primary goal is to ensure safety for participants. Although clear data on human side effects is not yet available, the study is carefully designed to minimize risks. Participants will be closely monitored to address any side effects promptly.12345

Why are researchers excited about this trial's treatments?

Researchers are excited about the N332-GT5 gp140 and SMNP treatments because they represent a novel approach to HIV prevention. Unlike standard HIV treatments that focus on managing the virus in infected individuals, these investigational treatments aim to prevent infection altogether by stimulating the immune system to produce protective antibodies before exposure. The combination of N332-GT5 gp140, a designed protein, with the SMNP adjuvant potentially enhances the immune response, distinguishing it from existing vaccines that lack this specific targeting mechanism. This could lead to a more effective preventative strategy against HIV, sparking hope for a significant advancement in global HIV prevention efforts.

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

Research has shown that the N332-GT5 gp140 trimer, an investigational treatment in this trial, helps the immune system recognize and fight HIV by activating certain B cells, which protect the body from infections. Another treatment option in this trial, the adjuvant SMNP, is used with the trimer to further enhance this immune response. Animal studies demonstrated that SMNP improves the body's ability to remember and respond to HIV-like threats. These findings suggest that this combination could be an important step toward preventing HIV infection.12456

Who Is on the Research Team?

LB

Lindsey Baden

Principal Investigator

Brigham and Women's Hospital

Are You a Good Fit for This Trial?

Adults aged 18-55, in good health with a low risk of HIV, can join this trial. They must have normal blood counts and organ function tests, live near a participating research site, and commit to the study's duration. Those with certain cancers or lymph disorders cannot participate.

Inclusion Criteria

My overall health is good, as confirmed by recent medical exams and tests.
Assessment of Understanding (AoU): Volunteer demonstrates understanding of this study by completing a questionnaire prior to the first vaccination with verbal demonstration of understanding of all questionnaire items answered incorrectly
I am open to talking about HIV risks and receiving advice on reducing these risks.
See 19 more

Exclusion Criteria

History of angioedema or anaphylaxis with specified conditions
My blood pressure is high.
I have not received any blood products in the last 4 months.
See 22 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive N332-GT5 gp140 HIV trimer protein adjuvanted with SMNP via subcutaneous or intramuscular route, with 2 bolus immunizations or fractionated escalating dose prime followed by a bolus immunization boost

10 weeks

Follow-up

Participants are monitored for safety and effectiveness after treatment, including planned safety holds and Adverse Event of Special Interest (AESI) health contact 1 year after last vaccination

12 months

What Are the Treatments Tested in This Trial?

Interventions

  • N332-GT5 gp140
  • SMNP
Trial Overview The trial is testing N332-GT5 gp140, an experimental HIV vaccine given with SMNP adjuvant via different methods and schedules. It aims to find safe doses and see if it triggers immune responses without causing HIV.
How Is the Trial Designed?
15Treatment groups
Experimental Treatment
Group I: Part B SC Immunogenicity - Group 14Experimental Treatment2 Interventions
Group II: Part B Immunogenicity - Group 15Experimental Treatment4 Interventions
Group III: Part B IM Immunogenicity - Group 13Experimental Treatment2 Interventions
Group IV: Part A Subcutaneous (SC) safety with dose finding - Group 7Experimental Treatment2 Interventions
Group V: Part A SC safety with dose finding - Group 9Experimental Treatment2 Interventions
Group VI: Part A SC safety with dose finding - Group 8Experimental Treatment2 Interventions
Group VII: Part A SC safety with dose finding - Group 12Experimental Treatment2 Interventions
Group VIII: Part A SC safety with dose finding - Group 11Experimental Treatment2 Interventions
Group IX: Part A SC safety with dose finding - Group 10Experimental Treatment2 Interventions
Group X: Part A Intramuscular (IM) safety with dose finding - Group 1Experimental Treatment2 Interventions
Group XI: Part A IM safety with dose finding - Group 6Experimental Treatment2 Interventions
Group XII: Part A IM safety with dose finding - Group 5Experimental Treatment2 Interventions
Group XIII: Part A IM safety with dose finding - Group 4Experimental Treatment2 Interventions
Group XIV: Part A IM safety with dose finding - Group 3Experimental Treatment2 Interventions
Group XV: Part A IM safety with dose finding - Group 2Experimental Treatment2 Interventions

Find a Clinic Near You

Who Is Running the Clinical Trial?

National Institute of Allergy and Infectious Diseases (NIAID)

Lead Sponsor

Trials
3,361
Recruited
5,516,000+

National Institutes of Health (NIH)

Collaborator

Trials
2,896
Recruited
8,053,000+

Department of Health and Human Services

Collaborator

Trials
240
Recruited
944,000+

Published Research Related to This Trial

In a study using a simian immunodeficiency virus (SIV) model, a sequential immunization strategy combining DNA, modified vaccinia virus Ankara (MVA), and a protein boost significantly increased antibody responses, with some vaccinated animals showing complete protection against SIV infection after challenges.
The protein boost with virus-like particles (VLPs) enhanced binding antibody titers and neutralizing responses, but highlighted the importance of optimizing CD8 T cell engagement for effective early viral control, indicating a need for further development in HIV vaccine strategies.
Virus-Like Particles Displaying Trimeric Simian Immunodeficiency Virus (SIV) Envelope gp160 Enhance the Breadth of DNA/Modified Vaccinia Virus Ankara SIV Vaccine-Induced Antibody Responses in Rhesus Macaques.Iyer, SS., Gangadhara, S., Victor, B., et al.[2021]
In a study involving 50 male mice with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS), treatment with biodegradable nanoparticles coupled to the T2 peptide significantly improved pain thresholds and reduced urinary frequency, indicating potential efficacy in alleviating symptoms of CP/CPPS.
The PLGA-PEMA-T2 treatment not only enhanced the anti-inflammatory cytokine IL-10 but also reduced levels of inflammatory markers like TNF-α and CRP, suggesting a mechanism of action that promotes immune tolerance and reduces inflammation in CP/CPPS.
A nanoparticle-coupled T2 peptide induces immune tolerance and ameliorates chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) in mice model.Cao, Y., Cheng, Y., Ihsan, AU., et al.[2019]
The study identifies poly (I:C) as the most effective adjuvant for enhancing cellular immune responses when combined with the HIV gp140 trimer vaccine, leading to increased production of specific T cells and IFN-γ.
Combining different adjuvants, such as MPL with Alum or MDP, can enhance the quality and magnitude of antibody responses, indicating that the right adjuvant-antigen pairing is crucial for developing an effective HIV vaccine.
HIV Envelope Trimer Specific Immune Response Is Influenced by Different Adjuvant Formulations and Heterologous Prime-Boost.Apostólico, Jde S., Boscardin, SB., Yamamoto, MM., et al.[2018]

Citations

Study Details | NCT06033209 | A Trial to Evaluate an HIV ...This study will evaluate the safety and immunogenicity of combining 2 FIH products: N332-GT5 gp140 HIV trimer protein adjuvanted with SMNP, co-administered as ...
mRNA-LNP HIV-1 trimer boosters elicit precursors to broad ...Here, using our established BG18gH mouse model, we found that an mRNA-LNP N332-GT5/B11 or B16 prime-boost regimen was highly effective. The relative ease of ...
A Trial to Evaluate an HIV Envelope Trimer, N332-GT5 ...The study aims to evaluate the safety and tolerability of N332-GT5 gp140 adjuvanted with SMNP in adult volunteers without HIV and in overall ...
A Trial to Evaluate an HIV Envelope Trimer, N332-GT5 ...The study aims to evaluate the safety and tolerability of N332-GT5 gp140 adjuvanted with SMNP in adult volunteers without HIV and in overall good health.
Vaccine priming of rare HIV broadly neutralizing antibody ...Here, immunization with N332-GT5, an HIV envelope trimer designed to target precursors of the HCDR3-dominant bnAb BG18, primed bnAb-precursor B cells in 8 of 8 ...
HIV Vaccine + Adjuvant for HIV PreventionThe safety data for the HIV Vaccine + Adjuvant, which includes components like N332-GT5 gp140, HIV envelope trimer, SMNP, and Saponin/MPLA nanoparticles, ...
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