title: ATP-binding cassette transporter A1 R219K polymorphism and ischemic stroke risk in the Chinese population: a meta-analysis.
abstract: Recently, many studies have been focused on the association between the ATP-binding cassette transporter A1 (ABCA1) gene R219K polymorphism and ischemic stroke (IS). However, the study results have been inconsistent, especially in the Chinese population. Therefore, we performed a meta-analysis to better clarify the association between the ABCA1 gene and IS. All of the relevant studies used in our meta-analysis were identified using PubMed, OVID, Cochrane Library, Chinese Wan Fang database, Chinese VIP database, China National Knowledge Infrastructure (CNKI), and China Biological Medicine Database (CBM) up to May 2013. Statistical analysis was conducted with STATA software version 11.0. Odds ratios with 95% confidence intervals were applied to evaluate the strength of the association between ABCA1 gene R219K polymorphism and IS. Heterogeneity was evaluated using the Q-test and I(2) statistic. The funnel plots, Begg's and Egger's regression tests were used to assess the publication bias. Our meta-analysis showed the dominant genetic model (OR=0.92, 95% CI: 0.88-0.96), the recessive genetic model (OR=0.73, 95% CI: 0.51-1.05), the homozygote genetic model (OR=0.64, 95% CI: 0.44-0.94), the heterozygote genetic model (OR=0.81, 95% CI: 0.69-0.95), and the allelic genetic model (OR=0.83, 95% CI: 0.69-0.99). For R219K in IS, there were significant associations with these genetic models, but not with the recessive genetic model. Our meta-analysis indicated that the ABCA1 gene R219K polymorphism might be associated with IS and the K allele might be a protective factor in the Chinese population.
authors.affiliation: Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China.
authors.forename: Rongyao
authors.initials: R
authors.lastname: Hou
authors.affiliation: Department of Critical Care Medicine, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China. Electronic address: drpan022@163.com.
authors.forename: Xudong
authors.initials: X
authors.lastname: Pan
authors.affiliation: Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China.
authors.forename: Ruiyou
authors.initials: R
authors.lastname: Guo
authors.affiliation: Department of Neurology, The Affiliated Hiser Hospital of Qingdao University, Qingdao, China.
authors.forename: Teng
authors.initials: T
authors.lastname: Ma
authors.affiliation: Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Xu
mesh_terms: D064286:ATP Binding Cassette Transporter 1 / Q000235:genetics*; D044466:Asian People / Q000208:ethnology / Q000235:genetics*; D002545:Brain Ischemia / Q000175:diagnosis / Q000208:ethnology / Q000235:genetics*; D016022:Case-Control Studies; D006801:Humans; D011110:Polymorphism, Genetic / Q000235:genetics*; D011159:Population Surveillance / Q000379:methods; D012307:Risk Factors; D020521:Stroke / Q000175:diagnosis / Q000208:ethnology / Q000235:genetics*
chemical_list: C577836:ABCA1 protein, human; D064286:ATP Binding Cassette Transporter 1
keywords: ATP-binding cassette transporter A1 (ABCA1); Gene polymorphism; Ischemic stroke; Meta analysis; R219K; The Chinese population