Trial reportJCI insight2017
Human vaccination against RH5 induces neutralizing antimalarial antibodies that inhibit RH5 invasion complex interactions.
Trial report in JCI insight, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
89 citing papers in PubMed, 149 citations in OpenAlex.
- Antibodies from malaria-exposed Malians generally interact additively or synergistically with human vaccine-induced RH5 antibodies.Cell reports. Medicine · 2021Trial
- Protein/AS01Cell reports. Medicine · 2021Trial
- Phase 1/2 trial of SARS-CoV-2 vaccine ChAdOx1 nCoV-19 with a booster dose induces multifunctional antibody responses.Nature medicine · 2021Trial
- A dual-antigen mRNA-lipid polyplex vaccine elicits durable multistage immunity and sterile protection against malaria in mice.Acta pharmacologica Sinica · 2026Article
- Broad and durable protection against SARS-CoV-2 and SARS-CoV by an intranasal chimpanzee adenovirus vaccine expressing tandem RBDs and nucleocapsid.PLoS pathogens · 2026Article
- Recent Advances, Bottlenecks, and Future Directions inVaccines · 2026Review
- Erythrocyte invasion in malaria: from molecular mechanisms to rational vaccines.Nature reviews. Microbiology · 2026Review
- B and T cell responses to pre-erythrocytic R21/Matrix-M and blood-stage RH5.1/Matrix-M malaria vaccines in endemic settings.Frontiers in immunology · 2026Article
- Developing the next-generation of adenoviral vector vaccines.Human vaccines & immunotherapeutics · 2025Review
- Overview of the host immune response toJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2025Review
- Article
- PfRH5 vaccine; from the bench to the vial.NPJ vaccines · 2025Review
- Antibody correlates of risk of clinical malaria in an area of low and unstable malaria transmission in western Kenya.Malaria journal · 2025Article
- Molecular Mechanism of VSV-Vectored ASFV Vaccine Activating Immune Response in DCs.Veterinary sciences · 2025Article
- Performance characteristics and potential public health impact of improved pre-erythrocytic malaria vaccines targeting childhood burden.PLOS global public health · 2025Article
- Article
- Blood-stage malaria vaccine candidate RH5.1/Matrix-M in healthy Tanzanian adults and children; an open-label, non-randomised, first-in-human, single-centre, phase 1b trial.The Lancet. Infectious diseases · 2024Article
- Article
- Article
- Preclinical development of a stabilized RH5 virus-like particle vaccine that induces improved antimalarial antibodies.Cell reports. Medicine · 2024Article
29 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
42 authors at 11 institutions in 9 countries.
Funding
Abstract
The development of a highly effective vaccine remains a key strategic goal to aid the control and eventual eradication of Plasmodium falciparum malaria. In recent years, the reticulocyte-binding protein homolog 5 (RH5) has emerged as the most promising blood-stage P. falciparum candidate antigen to date, capable of conferring protection against stringent challenge in Aotus monkeys. We report on the first clinical trial to our knowledge to assess the RH5 antigen - a dose-escalation phase Ia study in 24 healthy, malaria-naive adult volunteers. We utilized established viral vectors, the replication-deficient chimpanzee adenovirus serotype 63 (ChAd63), and the attenuated orthopoxvirus modified vaccinia virus Ankara (MVA), encoding RH5 from the 3D7 clone of P. falciparum. Vaccines were administered i.m. in a heterologous prime-boost regimen using an 8-week interval and were well tolerated. Vaccine-induced anti-RH5 serum antibodies exhibited cross-strain functional growth inhibition activity (GIA) in vitro, targeted linear and conformational epitopes within RH5, and inhibited key interactions within the RH5 invasion complex. This is the first time to our knowledge that substantial RH5-specific responses have been induced by immunization in humans, with levels greatly exceeding the serum antibody responses observed in African adults following years of natural malaria exposure. These data support the progression of RH5-based vaccines to human efficacy testing.
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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.