Evidence map›Paper›PMID 30337594›Full record

ArticleScientific reports2018

Global genetic diversity of var2csa in Plasmodium falciparum with implications for malaria in pregnancy and vaccine development.

Ernest Diez Benavente, Damilola R Oresegun, Paola Florez de Sessions, Eloise M Walker, Cally Roper, Jamille G Dombrowski, Rodrigo M de Souza, Claudio R F Marinho, Colin J Sutherland, Martin L Hibberd and 4 more

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

35 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Cells · 2025
    Article
  6. Diamonds in the rif: Alignment-free comparative genomics analysis reveals strain-transcendent Plasmodium falciparum antigens amidst extensive genetic diversity.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2025
    Article
  7. Article
  8. Exploring theFrontiers in immunology · 2025
    Article
  9. Article
  10. Exploring the genetic progression of MDR1 inCurrent research in microbial sciences · 2024
    Article
  11. Article
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  13. Article
  14. Article
  15. Article
  16. Article
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  19. Article
  20. An open dataset ofWellcome open research · 2021
    Article
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

14 authors.

Ernest Diez BenaventeFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.ORCID http://orcid.org/0000-0002-4313-4290
Damilola R OresegunSchool of Water, Energy and Environment, Applied Bioinformatics, Cranfield University, Cranfield, United Kingdom.ORCID http://orcid.org/0000-0003-3762-3802
Paola Florez de SessionsGenomics Institute of Singapore, Biopolis, Singapore.
Eloise M WalkerFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Cally RoperFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.ORCID http://orcid.org/0000-0002-6545-309X
Jamille G DombrowskiDepartment of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Rodrigo M de SouzaDepartment of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Claudio R F MarinhoDepartment of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.ORCID http://orcid.org/0000-0002-1227-3845
Colin J SutherlandFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.ORCID http://orcid.org/0000-0003-1592-6407
Martin L HibberdFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Fady MoharebSchool of Water, Energy and Environment, Applied Bioinformatics, Cranfield University, Cranfield, United Kingdom.
David A BakerFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom.ORCID http://orcid.org/0000-0002-5490-8933
Taane G ClarkFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom. taane.clark@lshtm.ac.uk.ORCID http://orcid.org/0000-0001-8985-9265
Susana CampinoFaculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom. Susana.campino@lshtm.ac.uk.

Funding

Biotechnology and Biological Sciences Research Council BB/R013063/1Medical Research Council MR/K000551/1Medical Research Council MR/M01360X/1Medical Research Council MR/N010469/1Medical Research Council MR/R020973/1
6 · The paper itself

Abstract

Malaria infection during pregnancy, caused by the sequestering of Plasmodium falciparum parasites in the placenta, leads to high infant mortality and maternal morbidity. The parasite-placenta adherence mechanism is mediated by the VAR2CSA protein, a target for natural occurring immunity. Currently, vaccine development is based on its ID1-DBL2Xb domain however little is known about the global genetic diversity of the encoding var2csa gene, which could influence vaccine efficacy. In a comprehensive analysis of the var2csa gene in >2,000 P. falciparum field isolates across 23 countries, we found that var2csa is duplicated in high prevalence (>25%), African and Oceanian populations harbour a much higher diversity than other regions, and that insertions/deletions are abundant leading to an underestimation of the diversity of the locus. Further, ID1-DBL2Xb haplotypes associated with adverse birth outcomes are present globally, and African-specific haplotypes exist, which should be incorporated into vaccine design.

Indexed as

Genetic VariationAntibodies, ProtozoanAntigenic VariationAntigens, ProtozoanFemaleHaplotypesHumansMalaria, FalciparumMalaria VaccinesPlacentaPlasmodium falciparumPregnancyPregnancy Complications, ParasiticAntibodies, ProtozoanAntigens, ProtozoanMalaria VaccinesVAR2CSA protein, Plasmodium falciparum

Identifiers

PMID30337594
PMCPMC6193930

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.