Evidence map›Paper›PMID 24791170›Full record

ArticleAnnals of thoracic medicine2014

IL-4 receptor alpha single-nucleotide polymorphisms rs1805010 and rs1801275 are associated with increased risk of asthma in a Saudi Arabian population.

Saleh Al-Muhsen, Alejandro Vazquez-Tello, Ashraf Alzaabi, Mohamed S Al-Hajjaj, Hamdan H Al-Jahdali, Rabih Halwani

Open access · diamondAbstract read
In one paragraph

Article in Annals of thoracic medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
1.0field-weighted citation impact, top 24% 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. A Systematic Review of the Prevalence of Atopic Diseases in Children on the Arabian Peninsula.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 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

6 authors at 2 institutions in 2 countries.

Saleh Al-MuhsenPrince Naif Center for Immunology Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia ; Department of Paediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Alejandro Vazquez-TelloPrince Naif Center for Immunology Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Ashraf AlzaabiZayed Military Hospital, Abu Dhabi, UAE.
Mohamed S Al-HajjajDepartment of Internal Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Hamdan H Al-JahdaliKing Saud University for Health Sciences, Riyadh, Saudi Arabia.
Rabih HalwaniPrince Naif Center for Immunology Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia ; Department of Paediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
King Saud University · SAZayed Military Hospital · AE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe IL-4 receptor alpha subunit (IL-4Rα), when associated with the common gamma chain receptor, or the IL-13Rα1 subunit, transduces signals to STAT6 in response to IL-4 and IL-13 stimulations. This results in a number of cell-specific responses including Th2 differentiation, lymphocyte proliferation and IgE production. Given the prominent role of IL-4Rα in allergic disorders, several single-nucleotide polymorphisms (SNPs) have been found associated with asthma and other atopic disorders, including rs1805010 (I75V) and rs1801275 (Q576R) SNPs; however, lack of significant association have also been reported for some ethnic groups. The objective of this study was to determine whether IL-4Rα rs1805010 and rs1801275 polymorphisms are associated with asthma in patients from Saudi Arabia. MATERIALS AND

methodsOne hundred and ninety severe asthmatic patients (11-70 years old) and 194 healthy subjects of equivalent age range were recruited for blood donation. DNA was purified and genotyping for rs1801275 and rs1805010 polymorphisms in the IL-4Rα gene was performed by PCR amplification, followed by cycle sequencing of the purified PCR fragments using BigDye chain terminator and capillary electrophoresis.

resultsPearson's Chi-square tests showed that the minor alleles, G, for both rs1805010 and rs1801275 SNPs, were significantly more frequent in asthmatics than in the healthy group (Yates' P < 0.05); conversely, the major alleles, A, were significantly more frequent in healthy than in asthmatics (P < 0.05). Concerning association analysis, odds for A/G-G/G genotypes were significantly higher to be associated with asthma predisposition (rs1801275: OR = 2.12; 95% CI = 1.39-3.22; P < 0.001*; rs1805010: OR = 1.6; 95% CI = 1.01-2.53; P < 0.05*; dominant model). Analysis of gender-genotype interactions, with genders nested within A/G-G/G, indicated higher odds for females than males of significant association with asthma (rs1801275: OR = 5.19, 95% CI = 2.09-12.94*; rs1805010: OR = 3.73, 95% CI = 2.06-6.74*). Rs1805010 and rs1801275 were in linkage disequilibrium (D' = 0.27; P < 0.0004*), with G-G haplotype being more frequent in asthmatics than in healthy subjects (OR = 2.43, 95% CI = 1.59-3.71*).

conclusionsThe risk alleles, G, of IL-4Rα rs1805010 and rs1801275 SNPs and corresponding A/G-G/G genotypes were significantly associated with asthma predisposition in asthmatics from Saudi Arabia.

Indexed as

allergyassociationAsthmagenotypeIL-4 receptor alphaSTAT6susceptibility

Identifiers

PMID24791170
PMCPMC4005166
OpenAlexW1985078918

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.