Dataset Information

The correlation analysis of two common polymorphisms in STAT6 gene and the risk of asthma: a meta-analysis.

ABSTRACT:

Background

Several studies have reported that the GT dinucleotide repeat length polymorphism and the G2964A polymorphism in signal transducer and activator of transcriptional factor 6 gene are associated with asthma susceptibility, but others have conflicting results. Our meta-analysis aimed to elucidate the emerging paradigms.

Methods

We searched PUBMED, EMBASE, ISI web of knowledge, Chinese National Knowledge Infrastructure, and Wanfang databases. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were used to evaluate the strength of association. We applied Bonferroni step-down and Benjamini-Hochberg step-up methods to adjust the values for multiple comparisons.

Results

A total of 12 individual studies in 11 articles were included in the meta-analysis. For GT repeat polymorphism, the S allele had approximately 45% increased risk of asthma (S vs. L: OR ?= ?1.45, 95% CI ?=? 1.22-1.71, P(UNCORRECTED) < 0.001, P(Bon) < 0.001, P(FDR) < 0.001). Further analysis indicated that GT13 and GT14 contributed to asthma risk, whereas GT15 and GT16 were protective (GT13 vs. GT15: OR ?= ?1.38, 95% CI? = ?1.16-1.65, P(UNCORRECTED?) = ?0.001, P(Bon) =? 0.005, P(FDR) =? 0.002). Similar results were obtained in the subgroup analysis of Asian population. G2964A polymorphism analysis showed that the AA genotype moderately increased the risk of asthma by 47% compared with the GG genotype (OR? = ?1.47, p? = ?0.068) in Chinese population, whereas the 2964A allele moderately increased the risk of asthma in Chinese population by 18% (2964A vs. 2964G: OR? = ?1.18, p? = ?0.08). However, none of the associations reached statistically significant levels particularly after correction for multiple testing.

Conclusions

This meta-analysis suggests that S allele (GT13 and GT14) of the GT repeat polymorphism confers significant risks to asthma. However, the G2964A polymorphism does not have an association with the susceptibility to asthma.

SUBMITTER: Zhu L

PROVIDER: S-EPMC3701693 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Publications

The correlation analysis of two common polymorphisms in STAT6 gene and the risk of asthma: a meta-analysis.

Zhu Li L Zhu Qingqing Q Zhang Xinlin X Wang Hongwei H

PloS one 20130704 7

<h4>Background</h4>Several studies have reported that the GT dinucleotide repeat length polymorphism and the G2964A polymorphism in signal transducer and activator of transcriptional factor 6 gene are associated with asthma susceptibility, but others have conflicting results. Our meta-analysis aimed to elucidate the emerging paradigms.<h4>Methods</h4>We searched PUBMED, EMBASE, ISI web of knowledge, Chinese National Knowledge Infrastructure, and Wanfang databases. Odds ratios (ORs) and 95% confi ...[more]

PMID: 23861779

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Project description:BACKGROUND:Previous studies have indicated that chitinase 3-like 1 (CHI3L1) gene rs4950928 polymorphism and acidic mammalian chitinase (AMCase or CHIA) gene rs10494132 polymorphism are associated with the risk of asthma. However, the results are inconsistent because of small sample size and varied ethnicity and age in studies. Therefore, a systematic meta-analysis was important to clarify the effect of CHI3L1 rs4950928 polymorphism and CHIA rs10494132 variant on asthma risk. METHODS:An electronic literature search was conducted to identify all the eligible studies. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated and sensitivity analysis as well as publication bias were assessed to investigate the associations. All statistical analyses were performed using STATA 12.0. RESULTS:Eight published articles with 10 case-control studies were included, 5 studies were of CHI3L1 rs4950928 polymorphism and another 5 studies involved CHIA rs10494132 polymorphism. Overall, no significant association was found between CHI3L1 polymorphism and asthma susceptibility. After stratified according to ethnicity, CHI3L1 rs4950928 variant was associated with decreased asthma risk in Caucasians (GG?+?GC vs. CC: OR?=?0.621, 95% CI?=?0.484-0.797, P?=?0.000; GC vs. CC: OR?=?0.612, 95% CI?=?0.470-0.796, P?=?0.000; G vs. C: OR?=?0.696, 95% CI?=?0.567-0.856, P?=?0.001). When stratified population by age, there was no association in children under all genetic models. As for CHIA rs10494132 polymorphism, no evidence of association between CHIA rs10494132 polymorphism and asthma risk was identified. Furthermore, subgroup analysis by ethnicity revealed a positive correlation between CHIA rs10494132 polymorphism and asthma risk among Asians (TT vs. TC?+?CC: OR?=?1.476, 95% CI?=?1.071-2.032, P?=?0.017; T vs. C: OR?=?1.326, 95% CI?=?1.024-1.717, P?=?0.032). Additionally, in the subgroup analysis conducted according to age, CHIA rs10494132 variant was also found to be associated with the increased risk of asthma in children (TT vs. TC?+?CC: OR?=?1.472, 95% CI?=?1.067-2.030, P?=?0.019; T vs. C: OR?=?1.320, 95% CI?=?1.016-1.713, P?=?0.037). CONCLUSIONS:The G allele of CHI3L1 rs4950928 might be a protective factor against the development of asthma. However, the rs10494132 polymorphism of CHIA might be a risk factor for asthma.

Dataset Information

The correlation analysis of two common polymorphisms in STAT6 gene and the risk of asthma: a meta-analysis.

Background

Methods

Results

Conclusions

Publications

The correlation analysis of two common polymorphisms in STAT6 gene and the risk of asthma: a meta-analysis.

Similar Datasets

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