Evidence map›Paper›PMID 28427365›Full record

ArticleBMC infectious diseases2017

Association between Fcγ receptor IIA, IIIA and IIIB genetic polymorphisms and susceptibility to severe malaria anemia in children in western Kenya.

Elly O Munde, Winnie A Okeyo, Evans Raballah, Samuel B Anyona, Tom Were, John M Ong'echa, Douglas J Perkins, Collins Ouma

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

18 citing papers in PubMed, 31 citations in OpenAlex.

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  8. Construction of a diagnostic model based on random forest and artificial neural network for peri-implantitis.Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2024
    Article
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  17. Susceptibility toFrontiers in immunology · 2020
    Article
  18. 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

8 authors at 4 institutions in 2 countries.

Elly O MundeDepartment of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya.
Winnie A OkeyoDepartment of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya.
Evans RaballahUniversity of New Mexico/KEMRI Laboratories of Parasitic and Viral Diseases, Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya.
Samuel B AnyonaDepartment of Medical Biochemistry, School of Medicine, Maseno University, Maseno, Kenya.
Tom WereDepartment of Medical Laboratory Science, School of Public Health, Biomedical Sciences and Technology, Masinde Muliro University of Science and Technology, Kakamega, Kenya.
John M Ong'echaUniversity of New Mexico/KEMRI Laboratories of Parasitic and Viral Diseases, Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya.
Douglas J PerkinsUniversity of New Mexico/KEMRI Laboratories of Parasitic and Viral Diseases, Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya.
Collins OumaDepartment of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya. collinouma@yahoo.com.
Kenya Medical Research Institute · KEMaseno University · KEMasinde Muliro University of Science and Technology · KENew Mexico Department of Health · US

Funding

TRAINING AND RESEARCH ON SEVERE MALARIAL ANEMIAD43TW005884 · FIC · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Collins Ouma, Douglas Jay Perkins · 2002 to 2026
$5.2M
GENETIC BASIS OF SEVERE MALARIAL ANEMIAR01AI051305 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PERKINS, DOUGLAS JAY · 2002 to 2011
$4.7M
Impacts of surface receptors [Toll like receptor (TLRs) and Fc gamma receptors (FR01TW008306 · FIC · MASENO UNIVERSITY · PI OUMA, COLLINS · 2009 to 2012
$202k
FIC NIH HHS D43 TW005884FIC NIH HHS R01 TW008306NIAID NIH HHS R01 AI051305
6 · The paper itself

Abstract

backgroundNaturally-acquired immunity to Plasmodium falciparum malaria develops after several episodes of infection. Fc gamma receptors (FcγRs) bind to immunoglobulin G (IgG) antibodies and mediate phagocytosis of opsonized microbes, thereby, linking humoral and cellular immunity. FcγR polymorphisms influence binding affinity to IgGs and consequently, can influence clinical malaria outcomes. Specifically, variations in FcγRIIA -131Arg/His, FcγRIIIA-176F/V and FcγRIIIB-NA1/NA2 modulate immune responses through altered binding preferences to IgGs and immune complexes. Differential binding, in turn, changes ability of immune cells to respond to infection through production of inflammatory mediators during P. falciparum infection.

methodsWe determined the association between haplotypes of FcγRIIA-131Arg/His, FcγRIIIA-176F/V and FcγRIIIB-NA1/NA2 variants and severe malarial anemia (SMA; hemoglobin < 6.0 g/dL, any density parasitemia) in children (n = 274; aged 6-36 months) presenting for their first hospital visit with P. falciparum malaria in a holoendemic transmission region of western Kenya. FcγRIIA-131Arg/His and FcγRIIIA-176F/V genotypes were determined using TaqMan® SNP genotyping, while FcγRIIIBNA1/NA2 genotypes were determined using restriction fragment length polymorphism. Hematological and parasitological indices were measured in all study participants.

resultsCarriage of FcγRIIA-131Arg/FcγRIIIA-176F/FcγRIIIBNA2 haplotype was associated with susceptibility to SMA (OR = 1.70; 95% CI; 1.02-2.93; P = 0.036), while the FcγRIIA-131His/ FcγRIIIA-176F/ FcγRIIIB NA1 haplotype was marginally associated with enhanced susceptibility to SMA (OR: 1.80, 95% CI; 0.98-3.30, P = 0.057) and higher levels of parasitemia (P = 0.009). Individual genotypes of FcγRIIA-131Arg/His, FcγRIIIA-176F/V and FcγRIIIB-NA1/NA2 were not associated with susceptibility to SMA.

conclusionThe study revealed that haplotypes of FcγRs are important in conditioning susceptibility to SMA in immune-naive children from P. falciparum holoendemic region of western Kenya.

Indexed as

Polymorphism, GeneticAnemiaChild, PreschoolCross-Sectional StudiesFemaleGenetic Predisposition to DiseaseGenotypeGPI-Linked ProteinsHaplotypesHumansInfantKenyaMalariaMalaria, FalciparumMaleParasite LoadFc gamma receptor IIAFCGR3A protein, humanFCGR3B protein, humanGPI-Linked ProteinsReceptors, IgGFcγRsMalaria anemiaPolymorphismsSusceptibility

Identifiers

PMID28427365
PMCPMC5397742
OpenAlexW2607255086

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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.