Evidence map›Paper›PMID 22551816›Full record

ArticleThe Journal of infectious diseases2012

Use of massively parallel pyrosequencing to evaluate the diversity of and selection on Plasmodium falciparum csp T-cell epitopes in Lilongwe, Malawi.

Jeffrey A Bailey, Tisungane Mvalo, Nagesh Aragam, Matthew Weiser, Seth Congdon, Debbie Kamwendo, Francis Martinson, Irving Hoffman, Steven R Meshnick, Jonathan J Juliano

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
5.0field-weighted citation impact, top 5% 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

47 citing papers in PubMed, 65 citations in OpenAlex.

  1. Trial
  2. Review
  3. Complexity of Infection andmedRxiv : the preprint server for health sciences · 2026
    Article
  4. Haplotype diversity ofFrontiers in parasitology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Genetic polymorphism and evidence of signatures of selection in themedRxiv : the preprint server for health sciences · 2024
    Article
  10. Genetic variation of theFrontiers in parasitology · 2024
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
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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

10 authors at 2 institutions in 1 country.

Jeffrey A BaileyDivision of Transfusion Medicine and Program in Bioinformatics and Integrative Biology, University of Massachusetts School of Medicine, Worcester, USA.
Tisungane Mvalo
Nagesh Aragam
Matthew Weiser
Seth Congdon
Debbie Kamwendo
Francis Martinson
Irving Hoffman
Steven R Meshnick
Jonathan J Juliano
University of Massachusetts Chan Medical School · USUniversity of North Carolina at Chapel Hill · US

Funding

UNC CLINICAL AND TRANSLATIONAL SCIENCE AWARD: BPCAUL1RR025747 · NCRR · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RUNGE, MARSCHALL S. · 2008 to 2011
$44.6M
UNC Clinical Translation Science Award-K12 Scholars Program (KL2)KL2RR025746 · NCRR · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RUNGE, MARSCHALL S. · 2008 to 2011
$9.0M
Within Host Selection of P. falciparum Variants by Artemisinin Combination TherapR01AI089819 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI JULIANO, JONATHAN J · 2010 to 2014
$1.9M
NCRR NIH HHS KL2 RR025746NCRR NIH HHS KL2RR025746NCRR NIH HHS UL1 RR025747NCRR NIH HHS UL1RR025747NIAID NIH HHS 1R01AI089819NIAID NIH HHS R01 AI089819
6 · The paper itself

Abstract

The development of an effective malaria vaccine has been hampered by the genetic diversity of commonly used target antigens. This diversity has led to concerns about allele-specific immunity limiting the effectiveness of vaccines. Despite extensive genetic diversity of circumsporozoite protein (CS), the most successful malaria vaccine is RTS/S, a monovalent CS vaccine. By use of massively parallel pyrosequencing, we evaluated the diversity of CS haplotypes across the T-cell epitopes in parasites from Lilongwe, Malawi. We identified 57 unique parasite haplotypes from 100 participants. By use of ecological and molecular indexes of diversity, we saw no difference in the diversity of CS haplotypes between adults and children. We saw evidence of weak variant-specific selection within this region of CS, suggesting naturally acquired immunity does induce variant-specific selection on CS. Therefore, the impact of CS vaccines on variant frequencies with widespread implementation of vaccination requires further study.

Indexed as

Genetic VariationAdultChild, PreschoolDNA, ProtozoanEpitopes, T-LymphocyteFemaleHaplotypesHigh-Throughput Nucleotide SequencingHumansInfantMalaria, FalciparumMalawiMaleMiddle AgedMolecular Sequence DataPlasmodium falciparumcircumsporozoite protein, ProtozoanDNA, ProtozoanEpitopes, T-LymphocyteProtozoan Proteins

Identifiers

PMID22551816
PMCPMC3491736
OpenAlexW2143594833

What OpenQuestion holds

Textmetadata
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.