Interleukin-13 +2044 G/A and +1923C/T polymorphisms are associated with asthma susceptibility in Asians: A meta-analysis.

Medicine (Baltimore)

Department of Intensive Care Unit, The First People's Hospital of Changde City, Changde, Hunan Department of Medical Oncology, Lung Cancer and Gastrointestinal Unit, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China.

Published: December 2017

AI Article Synopsis

  • A number of studies point to the IL-13 gene's role in asthma susceptibility, with inconsistent findings for the +2044G/A and +1923C/T polymorphisms among Asian populations.
  • Meta-analysis of data from multiple studies shows a significant association between the IL-13 +2044G/A polymorphism and asthma, especially in Asian adults and children.
  • More research is needed with larger sample sizes to fully understand these relationships, as the +1923C/T polymorphism did not show a strong link to age or atopy within Asian subgroups.

Article Abstract

A number of studies have reported that the interleukin 13 (IL-13) gene is associated with asthma susceptibility. However, the reported relationships between the +2044G/A and +1923C/T polymorphisms and asthma susceptibility are inconsistent, especially in Asian adults and children with atopic status. Meta-analysis was used to analyze combined data.The +2044G/A and +1923C/T polymorphisms were investigated using data from 18 and 11 studies, respectively. The results suggested that there was an association between asthma and the IL-13 +2044G/A polymorphisms: odds ratio (OR) 1.34, 95% confidence interval (CI) 1.03-1.75 for AA versus GG + GA and +1923C/T; OR 1.50, 95% CI 1.26-1.78 for TT versus CC; and OR 1.15, 95% CI 1.10-1.21 for TC versus CC. The subgroup meta-analysis demonstrated that IL-13 +2044G/A polymorphisms are associated with asthma: OR 1.47, 95% CI 1.06-2.04 for AA versus GG + GA and +1923C/T; OR 1.70, 95% CI 1.26-2.30 for TT versus CC; and OR 1.27, 95% CI 1.03-1.56 for TC versus CC. In particular, IL-13 +2044G/A polymorphisms are specifically associated with Asian ethnicity in both adults and children with atopic status. However, the 1923C/T polymorphisms were not significantly associated with age group or atopic status within the Asian subgroups. Further investigation using larger samples and meta-analysis is required. No publication bias was detected.This meta-analysis indicates that the IL13 +2044G/A and +1923C/T polymorphisms are risk factors for asthma, especially among Asians.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5758167PMC
http://dx.doi.org/10.1097/MD.0000000000009203DOI Listing

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Interleukin-13 +2044 G/A and +1923C/T polymorphisms are associated with asthma susceptibility in Asians: A meta-analysis.

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  • Meta-analysis of data from multiple studies shows a significant association between the IL-13 +2044G/A polymorphism and asthma, especially in Asian adults and children.
  • More research is needed with larger sample sizes to fully understand these relationships, as the +1923C/T polymorphism did not show a strong link to age or atopy within Asian subgroups.
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