目的:评价IFN-γ基因多态性与哮喘易感性的关系。方法:检索中文及外文数据库,全面收集2012年3月之前发表的研究IFN-γ基因多态性与哮喘相关性的病例对照研究,对采纳的数据进行Meta分析。结果:21篇文献被纳入分析,其中5篇文献涉及基因位点+874T/A(rs2430561),累积病例381例。Meta分析计算合并比值比(95%可信区间):AA/TT+TA基因型为1.63(1.06~2.49)。AA/TT+TA研究数据不存在发表偏倚(P=0.271)。结论;当前的研究支持IFN-γ+874位点基因型AA可能是哮喘发病的危险因素。+874位点基因型TT和TA与哮喘发病尚无明确关系。
Objective: To investigate the association between the polymorphism of IFN-γ gene and the genetic suscepti- bility to asthma. Methods: Correlative bibliographic database and academic publication of internal and abroad were re- trieved, which were published before the March 2012. Meta-analysis was performed to determine whether the polymor- phism of IFN-γ gene was associated with asthma. Results: Twenty-one literatures were retrieved, and 5 of them were involved in the gene locus +874T/A (rs2430561) in IFN-7 gene including total cumulative 381 cases. The odds ratio for asthma for AA/TT+TA genotypes was 1.63(95%CI 1.06-2. 49). No significant publication bias was found re- garding AA/TT+TA genotypes(P=0. 271). Conclusion: +874AA genotype of IFN-γ gene might be the risk factors for asthma, whereas TT and TA genotypes of IFN-γ gene were no clear relationship with asthma.