Trial reportThe Journal of infectious diseases2024
Safety, Immunogenicity, and Regimen Selection of Ad26.RSV.preF-Based Vaccine Combinations: A Randomized, Double-blind, Placebo-Controlled, Phase 1/2a Study.
Trial report in The Journal of infectious diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03502707 (A Randomized, Double-blind, Placebo-controlled Phase 1/2a Study for Safety and Immunogenicity Evaluations for Regimen Selection of Ad26.RSV.preF and/or RSV preF Protein Combinations Followed by Expanded Safety Evaluation in Adults Aged 60 Years and Older), which is not on this map. Cited by 15 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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 Randomized, Double-blind, Placebo-controlled Phase 1/2a Study for Safety and Immunogenicity Evaluations for Regimen Selection of Ad26.RSV.preF and/or RSV preF Protein Combinations Followed by Expanded Safety Evaluation in Adults Aged 60 Years and Older
Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- Efficacy, immunogenicity and safety of respiratory syncytial virus prefusion F vaccine: systematic review and meta-analysis.BMC public health · 2024Pooled it
- Trial
- Adenovectored RSV prefusion glycoprotein + soluble glycoprotein combination immunization establishes persistent opsonophagocytic antibody response through IgG3.Frontiers in immunology · 2025Trial
- Immunogenicity and safety of Ad26.RSV.preF/RSV preF protein vaccine at predicted intermediate- and end-of-shelf-life as an evaluation of potency throughout shelf life.Human vaccines & immunotherapeutics · 2024Trial
- The role of naturally occurring and vaccine-induced Ad26 neutralizing antibodies in immunogenicity of Ad26-based vaccines.NPJ vaccines · 2026Article
- Developing the next-generation of adenoviral vector vaccines.Human vaccines & immunotherapeutics · 2025Review
- Recent advances in the prevention and treatment of respiratory syncytial virus disease.The Journal of general virology · 2025Review
- Preventing RSV Infection in Children: Current Passive Immunizations and Vaccine Development.Pathogens (Basel, Switzerland) · 2025Review
- Immunogenicity, safety and reactogenicity of Ad26.RSV.preF/RSV preF protein vaccine in adults aged 60 to 75 years: A comparison of phase 2b and phase 3 clinical trial material.Human vaccines & immunotherapeutics · 2024Article
- Vaccine and therapeutic agents against the respiratory syncytial virus: resolved and unresolved issue.MedComm · 2024Review
- Review
- Review
- A Phase 1/2a Study Evaluating Safety and Immunogenicity of Ad26.RSV.preF in RSV-seronegative Toddlers Aged 12-24 Months.Open forum infectious diseases · 2024Article
- Review
- Vaccination for Respiratory Syncytial Virus: A Narrative Review and Primer for Clinicians.Vaccines · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundAd26.RSV.preF is an adenovirus serotype 26 vector-based respiratory syncytial virus (RSV) vaccine encoding a prefusion conformation-stabilized RSV fusion protein (preF) that demonstrated robust humoral and cellular immunogenicity and showed promising efficacy in a human challenge study in younger adults. Addition of recombinant RSV preF protein might enhance RSV-specific humoral immune responses, especially in older populations.
methodsThis randomized, double-blind, placebo-controlled, phase 1/2a study compared the safety and immunogenicity of Ad26.RSV.preF alone and varying doses of Ad26.RSV.preF-RSV preF protein combinations in adults aged ≥60 years. This report includes data from cohort 1 (initial safety, n = 64) and cohort 2 (regimen selection, n = 288). Primary immunogenicity and safety analyses were performed 28 days postvaccination (cohort 2) for regimen selection.
resultsAll vaccine regimens were well tolerated, with similar reactogenicity profiles among them. Combination regimens induced greater humoral immune responses (virus-neutralizing and preF-specific binding antibodies) and similar cellular ones (RSV-F-specific T cells) as compared with Ad26.RSV.preF alone. Vaccine-induced immune responses remained above baseline up to 1.5 years postvaccination.
conclusionsAll Ad26.RSV.preF-based regimens were well tolerated. A combination regimen comprising Ad26.RSV.preF, which elicits strong humoral and cellular responses, and RSV preF protein, which increases humoral responses, was selected for further development. Clinical Trials Registration. NCT03502707.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.