Evidence map›Paper›PMID 17786209›Full record

ArticlePloS one2007

CCR5 haplotypes and mother-to-child HIV transmission in Malawi.

Bonnie R Pedersen, Deborah Kamwendo, Melinda Blood, Victor Mwapasa, Malcolm Molyneux, Kari North, Stephen J Rogerson, Peter Zimmerman, Steven R Meshnick

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.3field-weighted citation impact, top 25% 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

17 citing papers in PubMed, 25 citations in OpenAlex.

  1. The Influence BetweenAIDS research and human retroviruses · 2023
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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

9 authors at 4 institutions in 3 countries.

Bonnie R PedersenUniversity of North Carolina, Chapel Hill, North Carolina, United States of America.
Deborah Kamwendo
Melinda Blood
Victor Mwapasa
Malcolm Molyneux
Kari North
Stephen J Rogerson
Peter Zimmerman
Steven R Meshnick
University of North Carolina at Chapel Hill · USCase Western Reserve University · USUniversity of Malawi · MWUniversity of Melbourne · AU

Funding

Topical Agents to Prevent Mucosal HIV TransmissionP01AI051649 · NIAID · UNIVERSITY OF GENEVA · PI LEDERMAN, MICHAEL MARCEL · 2002 to 2006
$7.5M
MALARIA AND HIV IN PREGNANT WOMEN IN MALAWIR01AI049084 · NIAID · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI MESHNICK, STEVEN RICHARD · 2001 to 2005
$1.5M
TRAINING MED SCHOOL FACULTY TO TACKLE MALARIA IN MALAWID43TW000908 · FIC · MICHIGAN STATE UNIVERSITY · PI TAYLOR, TERRIE ELLEN · 1997 to 2002
$430k
FIC NIH HHS 5 D43 TW00908FIC NIH HHS D43 TW000908NIAID NIH HHS 5P01AI051649-05NIAID NIH HHS AI 49084NIAID NIH HHS P01 AI051649NIAID NIH HHS R01 AI049084Wellcome Trust
6 · The paper itself

Abstract

backgroundCCR5 and CCR2 gene polymorphisms (SNPs) have been associated with protection against HIV transmission in adults and with delayed progression to AIDS. The CCR5 Delta32 deletion and SNP -2459G are associated with reduced expression of the CCR5 protein. METHODOLOGY/PRINCIPAL

findingsWe investigated the association between infant CCR2/CCR5 diplotype and HIV mother to child transmission (MTCT) in Malawi. Blood samples from infants (n = 552) of HIV positive women who received nevirapine were genotyped using a post-PCR multiplex ligase detection reaction and haplotypes were identified based on 8 CCR2/CCR5 SNPs and the open reading frame 32 base pair deletion. Following verification of Hardy-Weinberg equilibrium, log linear regression was performed to examine the association between mutations and MTCT. Overall, protection against MTCT was weakly associated with two CCR5 SNPs, -2459G (Risk ratio [RR], 0.78; confidence interval [CI], 0.54-1.12), and the linked CCR5 -2135T (RR, 0.78; CI, 0.54-1.13). No child carried the CCR5 Delta32 SNP. Maternal Viral Load (MVL) was found to be an effect measure modifier. Among mothers with low MVL, statistically significant protection against MTCT was observed for -2459G (RR, 0.50; CI, 0.27-0.91), and -2135T (RR, 0.51; CI, 0.28-0.92). Statistically significant protection was not found at high MVL. CONCLUSIONS/SIGNIFICANCE: Results from this study suggest that CCR5 SNPs -2459G and -2135T associated with reduced receptor expression protect against MTCT of HIV at low MVLs, whereas high MVLs may over-ride differences in coreceptor availability.

Indexed as

HaplotypesInfectious Disease Transmission, VerticalFemaleHIV InfectionsHumansInfant, NewbornMalawiPhylogenyPolymerase Chain ReactionPolymorphism, Single NucleotidePregnancyPregnancy Complications, InfectiousReceptors, CCR5Receptors, CCR5

Identifiers

PMID17786209
PMCPMC1950791
OpenAlexW2001801626

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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.