Evidence map›Paper›PMID 29079846›Full record

ArticleScientific reports2017

Hemoglobin variants shape the distribution of malaria parasites in human populations and their transmission potential.

Bronner P Gonçalves, Issaka Sagara, Mamadou Coulibaly, Yimin Wu, Mahamadoun H Assadou, Agnes Guindo, Ruth D Ellis, Mahamadou Diakite, Erin Gabriel, D Rebecca Prevots and 2 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

16 citing papers in PubMed, 39 citations in OpenAlex.

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  16. Functional antibodies againstWellcome open research · 2018
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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

12 authors at 5 institutions in 3 countries.

Bronner P GonçalvesLaboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, United States of America.
Issaka SagaraMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.
Mamadou CoulibalyMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.
Yimin WuLaboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, United States of America.
Mahamadoun H AssadouMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.
Agnes GuindoMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.
Ruth D EllisLaboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, United States of America.
Mahamadou DiakiteMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.ORCID 0000-0002-4268-8857
Erin GabrielBiostatistics Research Branch, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, United States of America.ORCID 0000-0002-0504-8404
D Rebecca PrevotsLaboratory of Clinical Infectious Diseases - Epidemiology Unit, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD, United States of America.
Ogobara K DoumboMalaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali.
Patrick E DuffyLaboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, United States of America. patrick.duffy@nih.gov.ORCID 0000-0002-4483-5005
Université des Sciences, des Techniques et des Technologies de Bamako · MLNational Institute of Allergy and Infectious Diseases · USLondon School of Hygiene & Tropical Medicine · GBScientific Consulting Group · USU.S. President's Malaria Initiative · US

Funding

Mali International Center for Excellence in Research: Malaria Clinical ResearchZIAAI001056 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2009 to 2024
$43.1M
6 · The paper itself

Abstract

Hemoglobin variants C and S protect against severe malaria but their influence on parameters not directly linked to disease severity such as gametocyte carriage and infection chronicity is less well understood. To assess whether these infection-related phenotypes depend on the host hemoglobin genotype, we followed 500 Malian individuals over 1-2 years and determined their parasitological status during monthly visits and incidental clinical episodes. While adults heterozygous for hemoglobin S mutation were less often parasitemic compared to AA adults (odds ratio [OR] 0.50 95% confidence interval [CI] 0.31-0.79, P = 0.003), schoolchildren (but not toddlers or adults) with AC genotype carried parasites, including gametocytes, more often than their AA counterparts (OR 3.01 95% CI 1.38-6.57, P = 0.006). AC children were also likelier to be parasite-positive during the dry season, suggesting longer infections, and were more infectious in mosquito skin feeding assays than AA children. Notably, AC school-aged children, who comprise ~5% of the population, harbor a third of infections with patent gametocytes between May and August, when transmission transitions from very low to intense. These findings indicate that schoolchildren with hemoglobin C mutation might contribute disproportionately to the seasonal malaria resurgence in parts of West Africa where the HbC variant is common.

Indexed as

AdolescentChildChild, PreschoolFemaleHemoglobin CHemoglobin, SickleHeterozygoteHumansMalaria, FalciparumMalePlasmodium falciparumSeasonsHemoglobin CHemoglobin, Sickle

Identifiers

PMID29079846
PMCPMC5660173
OpenAlexW2766055885

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.