Evidence map›Paper›PMID 22504653›Full record

Trial reportJournal of immunology (Baltimore, Md. : 1950)2012

Antigen-specific IL-2 secretion correlates with NK cell responses after immunization of Tanzanian children with the RTS,S/AS01 malaria vaccine.

Amir Horowitz, Julius C R Hafalla, Elizabeth King, John Lusingu, Denise Dekker, Amanda Leach, Philippe Moris, Joe Cohen, Johan Vekemans, Tonya Villafana and 5 more

Open access · bronzeAbstract readClinical Trial, Phase IIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of immunology (Baltimore, Md. : 1950), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Distinct Helper T Cell Type 1 and 2 Responses Associated With Malaria Protection and Risk in RTS,S/AS01E Vaccinees.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2017
    Trial
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Review
  9. Review
  10. Review
  11. Effect of RTS,S/AS01NPJ vaccines · 2024
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Vaccines · 2021
    Review
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 8 institutions in 9 countries.

Amir HorowitzFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, United Kingdom.
Julius C R Hafalla
Elizabeth King
John Lusingu
Denise Dekker
Amanda Leach
Philippe Moris
Joe Cohen
Johan Vekemans
Tonya Villafana
Patrick H Corran
Philip Bejon
Chris J Drakeley
Lorenz von Seidlein
Eleanor M Riley
London School of Hygiene & Tropical Medicine · GBUNC/NCSU Joint Department of Biomedical Engineering · USGlaxoSmithKline (Belgium) · BEGlaxoSmithKline (Switzerland) · CHUniversity of London · GBAfrican Malaria Network Trust · TZNuffield Orthopaedic Centre · GBProgram for Appropriate Technology in Health · IN

Funding

Medical Research Council G0400225Medical Research Council G1000808Medical Research Council G1002624Wellcome Trust 063516Wellcome Trust 074538Wellcome Trust 078925Wellcome Trust 079920
6 · The paper itself

Abstract

RTS,S/AS01, a vaccine targeting pre-erythrocytic stages of Plasmodium falciparum, is undergoing clinical trials. We report an analysis of cellular immune response to component Ags of RTS,S-hepatitis B surface Ag (HBs) and P. falciparum circumsporozoite (CS) protein-among Tanzanian children in a phase IIb RTS,S/AS01(E) trial. RTS,S/AS01 (E) vaccinees make stronger T cell IFN-γ, CD69, and CD25 responses to HBs peptides than do controls, indicating that RTS,S boosts pre-existing HBs responses. T cell CD69 and CD25 responses to CS and CS-specific secreted IL-2 were augmented by RTS,S vaccination. Importantly, more than 50% of peptide-induced IFN-γ(+) lymphocytes were NK cells, and the magnitude of the NK cell CD69 response to HBs peptides correlated with secreted IL-2 concentration. CD69 and CD25 expression and IL-2 secretion may represent sensitive markers of RTS,S-induced, CS-specific T cells. The potential for T cell-derived IL-2 to augment NK cell activation in RTS,S-vaccinated individuals, and the relevance of this for protection, needs to be explored further.

Indexed as

BiomarkersCells, CulturedEpitopesHumansInfantInterleukin-2KenyaKiller Cells, NaturalLymphocyte ActivationMalaria VaccinesPlasmodium falciparumProtozoan ProteinsTanzaniaT-Lymphocyte SubsetsBiomarkerscircumsporozoite protein, ProtozoanEpitopesInterleukin-2Malaria VaccinesProtozoan Proteins

Identifiers

PMID22504653
PMCPMC3378032
OpenAlexW2133539151

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.