Evidence map›Paper›PMID 18186920›Full record

ArticleRespiratory research2008

IL13 gene polymorphisms modify the effect of exposure to tobacco smoke on persistent wheeze and asthma in childhood, a longitudinal study.

Alireza Sadeghnejad, Wilfried Karmaus, S Hasan Arshad, Ramesh Kurukulaaratchy, Marianne Huebner, Susan Ewart

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
5.2field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 76 citations in OpenAlex.

  1. Pooled it
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  3. Trial
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  6. Article
  7. Genetic Determinants of Poor Response to Treatment in Severe Asthma.International journal of molecular sciences · 2021
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  13. Observational
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  19. Genetics of asthma: an introduction for the clinician.European clinical respiratory journal · 2015
    Review
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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

6 authors at 5 institutions in 2 countries.

Alireza SadeghnejadCenter for Human Genomics, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA. asadeghn@wfubmc.edu
Wilfried Karmaus
S Hasan Arshad
Ramesh Kurukulaaratchy
Marianne Huebner
Susan Ewart
Michigan State University · USDavid Hide Asthma and Allergy Research Centre · GBSt. Mary's Hospital · GBUniversity of South Carolina · USWake Forest University · US

Funding

Genetic &epidemiologic cohort study of asthma &allergyR01AI061471 · NIAID · MICHIGAN STATE UNIVERSITY · PI EWART, SUSAN L · 2005 to 2009
$1.8M
NIAID NIH HHS R01 AI061471NIAID NIH HHS R01AI061471
6 · The paper itself

Abstract

backgroundTobacco smoke and genetic susceptibility are risk factors for asthma and wheezing. The aim of this study was to investigate whether there is a combined effect of interleukin-13 gene (IL13) polymorphisms and tobacco smoke on persistent childhood wheezing and asthma.

methodsIn the Isle of Wight birth cohort (UK, 1989-1999), five IL13 single nucleotide polymorphisms (SNPs): rs1800925 (-1112C/T), rs2066960, rs1295686, rs20541 (R130Q) and rs1295685 were genotyped. Parents were asked whether their children had wheezed in the last 12 months at ages 1, 2, 4 and 10 years. Children who reported wheeze in the first 4 years of life and also had wheezing at age 10 were classified as early-onset persistent wheeze phenotype; non-wheezers never wheezed up to age 10. Persistent asthma was defined as having a diagnosis of asthma both during the first four years of life and at age 10. Logistic regression methods were used to analyze data on 791 children with complete information. Potential confounders were gender, birth weight, duration of breast feeding, and household cat or dog present during pregnancy.

resultsMaternal smoking during pregnancy was associated with early-onset persistent wheeze (OR 2.93, p < 0.0001); polymorphisms in IL13 were not (OR 1.15, p = 0.60 for the common haplotype pair). However, the effect of maternal smoking during pregnancy was stronger in children with the common IL13 haplotype pair compared to those without it (OR 5.58 and OR 1.29, respectively; p for interaction = 0.014). Single SNP analysis revealed a similar statistical significance for rs20541 (p for interaction = 0.02). Comparable results were observed for persistent childhood asthma (p for interaction = 0.03).

conclusionThis is the first report that shows a combined effect of in utero exposure to smoking and IL13 on asthma phenotypes in childhood. The results emphasize that genetic studies need to take environmental exposures into account, since they may explain contradictory findings.

Indexed as

Polymorphism, GeneticAsthmaCausalityChildChild, PreschoolCohort StudiesFemaleGene FrequencyGenetic Predisposition to DiseaseGenotypeHumansInfantInterleukin-13Logistic ModelsLongitudinal StudiesMaleInterleukin-13

Identifiers

PMID18186920
PMCPMC2265286
OpenAlexW2043969166

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Textmetadata
LicenceCC BY
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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.