Evidence map›Paper›PMID 27149991›Full record

ArticleMalaria journal2016

Differences in PfEMP1s recognized by antibodies from patients with uncomplicated or severe malaria.

Michael F Duffy, Rintis Noviyanti, Takafumi Tsuboi, Zhi-Ping Feng, Leily Trianty, Boni F Sebayang, Eizo Takashima, Fransisca Sumardy, Daniel A Lampah, Louise Turner and 10 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in Malaria journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.1field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Malaria monoclonals block brain binding.Trends in parasitology · 2025
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  11. Article
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  14. RNAseq of Infected Erythrocyte Surface Antigen-Encoding Genes.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  15. Article
  16. Review
  17. Naturally Acquired Humoral Immunity AgainstFrontiers in immunology · 2020
    Review
  18. Article
  19. Article
  20. 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

20 authors at 12 institutions in 6 countries.

Michael F DuffyDepartment of Medicine, Royal Melbourne Hospital, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia. mduffy@unimelb.edu.au.
Rintis NoviyantiThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Takafumi TsuboiDivision of Malaria Research, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan.
Zhi-Ping FengBioinformatics Division, The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Leily TriantyThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Boni F SebayangThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Eizo TakashimaDivision of Malaria Research, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan.
Fransisca SumardyDepartment of Medicine, Royal Melbourne Hospital, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Daniel A LampahTimika Malaria Research Program, Papuan Health and Community Development Foundation, Timika, Papua, Indonesia.
Louise TurnerCentre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark.
Thomas LavstsenCentre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark.
Freya J I FowkesThe Burnet Institute, Melbourne, Victoria, Australia.
Peter SibaThe Papua New Guinea Institute for Medical Research, Madang, Papua New Guinea.
Stephen J RogersonDepartment of Medicine, Royal Melbourne Hospital, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Thor G TheanderCentre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark.
Jutta MarfurtGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Ric N PriceGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Nicholas M AnsteyGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Graham V BrownThe Nossal Institute for Global Health, The University of Melbourne, Parkville, Victoria, Australia.
Anthony T PapenfussBioinformatics Division, The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Eijkman Institute for Molecular Biology · IDUniversity of Copenhagen · DKEhime University · JPMenzies School of Health Research · AUUniversity of Melbourne · AUWalter and Eliza Hall Institute of Medical Research · AUBurnet Institute · AUCharles Darwin University · AUPapua New Guinea Institute of Medical Research · PGPeter Doherty Institute · AUState University of Papua · IDThe Royal Melbourne Hospital · AU

Funding

Wellcome Trust 091625
6 · The paper itself

Abstract

backgroundPlasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) variants are encoded by var genes and mediate pathogenic cytoadhesion and antigenic variation in malaria. PfEMP1s can be broadly divided into three principal groups (A, B and C) and they contain conserved arrangements of functional domains called domain cassettes. Despite their tremendous diversity there is compelling evidence that a restricted subset of PfEMP1s is expressed in severe disease. In this study antibodies from patients with severe and uncomplicated malaria were compared for differences in reactivity with a range of PfEMP1s to determine whether antibodies to particular PfEMP1 domains were associated with severe or uncomplicated malaria.

methodsParts of expressed var genes in a severe malaria patient were identified by RNAseq and several of these partial PfEMP1 domains were expressed together with others from laboratory isolates. Antibodies from Papuan patients to these parts of multiple PfEMP1 proteins were measured.

resultsPatients with uncomplicated malaria were more likely to have antibodies that recognized PfEMP1 of Group C type and recognized a broader repertoire of group A and B PfEMP1s than patients with severe malaria.

conclusionThese data suggest that exposure to a broad range of group A and B PfEMP1s is associated with protection from severe disease in Papua, Indonesia.

Indexed as

AdolescentAdultAntibodies, ProtozoanChild, PreschoolFemaleHumansIndonesiaMalaria, FalciparumMaleProtozoan ProteinsYoung AdultAntibodies, Protozoanerythrocyte membrane protein 1, Plasmodium falciparumProtozoan ProteinsPfEMP1Severe malariavar genes

Identifiers

PMID27149991
PMCPMC4858840
OpenAlexW2345604021

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.