title: Risk of Budd-Chiari syndrome associated with factor V Leiden and G20210A prothrombin mutation: a meta-analysis.
abstract: BACKGROUND
  Various studies have demonstrated that factor V Leiden (FVL) and G20210A prothrombin mutation contribute to the risk of Budd-Chiari syndrome (BCS), while other studies provided conflicting findings. In order to derive more precise estimations of the relationships, a meta-analysis was performed.
  
  
  METHODS
  Eligible articles were identified through search of databases including Pubmed, Chinese Biomedical Database (CBM, Chinese), and Chinese National Knowledge Infrastructure (CNKI, Chinese). Odd ratios (ORs) with 95% confidence intervals (CIs) were calculated using random- or fixed- model.
  
  
  RESULTS
  Finally, twelve studies were included for FVL and nine studies were included for G20210A prothrombin mutation. With respect to FVL, significantly increased BCS risk was found in the overall population (OR = 6.29, 95%CI = 4.23-9.36). Subgroup analyses suggested that FVL was associated with an increased risk of BCS in the population with high background mutation prevalence (>1% in the normal population). No significant association was found between BCS and G20210A prothrombin mutation (OR = 1.78, 95%CI = 0.77-4.11).
  
  
  CONCLUSIONS
  The presence of FVL should be evaluated in patients with BCS. Conversely, G20210A prothrombin mutation is not significantly associated with risk of BCS. Large-scale well designed studies are necessary to be conducted to further confirm or refute the observed association.
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Peijin
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Guixiang
authors.initials: G
authors.lastname: Sun
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Xiuyin
authors.initials: X
authors.lastname: Gao
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Yan
authors.affiliation: Department of Interventional Radiology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Interventional Radiology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Maoheng
authors.initials: M
authors.lastname: Zu
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: He
authors.initials: H
authors.lastname: Ma
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Public Health, Xuzhou Medical College, Xuzhou, Jiangsu, China.
authors.forename: Zhaojun
authors.initials: Z
authors.lastname: Lu
mesh_terms: D006502:Budd-Chiari Syndrome / Q000235:genetics*; D005165:Factor V / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006801:Humans; D009154:Mutation; D016017:Odds Ratio; D011516:Prothrombin / Q000235:genetics*; D017594:Publication Bias; D012306:Risk
chemical_list: C095381:factor V Leiden; D005165:Factor V; D011516:Prothrombin
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