Evidence map›Paper›PMID 15578041›Full record

ArticleGenes and immunity2005

A complement receptor-1 polymorphism with high frequency in malaria endemic regions of Asia but not Africa.

B N Thomas, B Donvito, I Cockburn, T Fandeur, J A Rowe, J H M Cohen, J M Moulds

Abstract read
In one paragraph

Article in Genes and immunity, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.0field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 35 citations in OpenAlex.

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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

7 authors at 4 institutions in 4 countries.

B N ThomasDepartment of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA.
B Donvito
I Cockburn
T Fandeur
J A Rowe
J H M Cohen
J M Moulds
Drexel University · USUniversité de Reims Champagne-Ardenne · FRUniversity of Edinburgh · GBInstitut Pasteur du Cambodge · KH

Funding

Malaria:Clinical Research and Trial Preparation Sites-26685346N01AI085346 · NIAID · Univ Maryland · 1998 to 2004
$2.8M
CRL POLYMORPHISMS AND SUSCEPTIBILITY TO SEVERE MALARIAR01AI042367 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI MOULDS, JOANN M · 1997 to 2000
$280k
CR1 Polymorphisms and Susceptibility to Severe MalariaR21AI042367 · NIAID · DREXEL UNIVERSITY · PI MOULDS, JOANN M · 2002 to 2002
$264k
NIAID NIH HHS N01 AI085346NIAID NIH HHS N01-AI-85346NIAID NIH HHS R01-AI-42367NIAID NIH HHS R21 AI042367Wellcome Trust 067431
6 · The paper itself

Abstract

Complement receptor-1 (CR1) is a ligand for rosette formation, a phenomenon associated with cerebral malaria (CM). Binding is dependent on erythrocyte CR1 copy number. In Caucasians, low CR1 expressors have two linked mutations. We determined the Q981H and HindIII RFLP distribution in differing population groups to ascertain a possible role in adaptive evolution. We examined 194 Caucasians, 180 Choctaw Indians, 93 Chinese-Taiwanese, 304 Cambodians, 89 Papua New Guineans (PNG) and 366 Africans. PCR/RFLP used HindIII for CR1 expression and BstNI for the Q981H mutation. DNA sequencing and pyrosequencing were performed to resolve inconclusive results. Gene frequencies for the L allele were 0.15 in Africans, 0.16 in Choctaws, 0.18 in Caucasians, 0.29 in Chinese-Taiwanese, 0.47 in Cambodians and 0.58 in PNG. Allelic frequency for 981H were 0.07 in Africans, 0.15 in Caucasians, 0.18 in Choctaws, 0.29 in Chinese-Taiwanese, 0.47 in Cambodians and 0.54 in PNG. The Q981H polymorphism correlates with the HindIII RFLP in most groups except West Africans and appears to be part of a low CR1 expression haplotype. The gene frequency for the haplotype is highest in the malaria-endemic areas of Asia, suggesting that this haplotype may have evolved because it protects from rosetting and CM.

Indexed as

Polymorphism, Restriction Fragment LengthPolymorphism, Single NucleotideAfricaAsia, SoutheasternEndemic DiseasesFemaleGene FrequencyHumansMalaria, CerebralMaleRacial GroupsReceptors, Complement 3bReceptors, Complement 3b

Identifiers

PMID15578041
PMCPMC2877660
OpenAlexW2001103260

What OpenQuestion holds

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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.