Trial reportJCI insight2024
Focusing HIV-1 Gag T cell responses to highly conserved regions by DNA vaccination in HVTN 119.
Trial report in JCI insight, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03181789 (A Phase 1 Clinical Trial to Evaluate the Safety and Immunogenicity of pDNA Vaccines Expressing HIV M Group p24^Gag Conserved Elements and/or p55^Gag, Administered With IL-12 pDNA, in Healthy, HIV-Uninfected Adult Participants), which is not on this map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase 1 Clinical Trial to Evaluate the Safety and Immunogenicity of pDNA Vaccines Expressing HIV M Group p24^Gag Conserved Elements and/or p55^Gag, Administered With IL-12 pDNA, in Healthy, HIV-Uninfected Adult Participants
Who cites it
7 citing papers in PubMed.
- Harnessing conserved epitopes and multivalent antigen strategies for vaccine design: Lessons learned and opportunities.Human vaccines & immunotherapeutics · 2026Review
- HIV-specific and resistant CAR T cells promote control of HIV replication in people with HIV.Research square · 2026Article
- Minicircle DNA Vaccines: Overcoming Delivery and Expression Barriers in Next-Generation Immunization.Vaccines · 2026Review
- Long-read deep sequencing reveals high rates of multilineage transmission and rapid viral population changes in acute HIV infection.Nature communications · 2026Article
- Long-Read Deep Sequencing Reveals High Rates of Multilineage Transmission and Rapid Viral Population Changes in Acute HIV Infection.bioRxiv : the preprint server for biology · 2025Article
- Prospects for therapeutic T-cell vaccine strategies for HIV cure.Current opinion in HIV and AIDS · 2025Review
- Highly immunogenic DNA/LION nanocarrier vaccine potently activates lymph nodes inducing long-lasting immunity in macaques.iScience · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
19 authors.
Funding
Abstract
BACKGROUNDAn HIV-1 DNA vaccine composed of 7 highly conserved, structurally important elements (conserved elements, CE) of p24Gag was tested in a phase I randomized, double-blind clinical trial (HVTN 119, NCT03181789) in people without HIV. DNA vaccination of CE prime/CE+p55Gag boost was compared with p55Gag.METHODSTwo groups (n = 25) received 4 DNA vaccinations (CE/CE+p55Gag or p55Gag) by intramuscular injection/electroporation, including IL-12 DNA adjuvant. The placebo group (n = 6) received saline. Participants were followed for safety and tolerability. Immunogenicity was assessed for T cell and antibody responses.RESULTSBoth regimens were safe and generally well tolerated. The p24CE vaccine was immunogenic and significantly boosted by CE+p55Gag (64% CD4+, P = 0.037; 42% CD8+, P = 0.004). CE+p55Gag induced responses to 5 of 7 CE, compared with only 2 CE by p55Gag DNA, with a higher response to CE5 in 30% of individuals (P = 0.006). CE+p55Gag induced significantly higher CD4+ CE T cell breadth (0.68 vs. 0.22 CE; P = 0.029) and a strong trend for overall T cell breadth (1.14 vs. 0.52 CE; P = 0.051). Both groups developed high cellular and humoral responses. p24CE vaccine-induced CD4+ CE T cell responses correlated (P = 0.007) with p24Gag antibody responses.CONCLUSIONThe CE/CE+p55Gag DNA vaccine induced T cell responses to conserved regions in p24Gag, increasing breadth and epitope recognition throughout p55Gag compared with p55Gag DNA. Vaccines focusing immune responses by priming responses to highly conserved regions could be part of a comprehensive HIV vaccine strategy.TRIAL REGISTRATIONClinical Trials.gov NCT03181789FUNDINGHVTN, NIAID/NIH.
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