title: The tau gene haplotype h1 confers a susceptibility to Parkinson's disease.
abstract: BACKGROUND
  Polymorphisms in the tau gene may be associated with increased risk for idiopathic Parkinson's disease (PD); however, most of previous association studies have been underpowered to detect a potentially modest contribution of the tau variants to PD risk.
  
  
  OBJECTIVE
  To clarify the relationship between genetic variation in tau gene and PD risk, we conducted a meta-analysis of all published association studies. We identified 14 independent case-control studies including 2,093 PD cases and 2,258 controls. After excluding two studies contributing to most of between-study heterogeneity, the pooled odds ratios (OR) and 95% confidence intervals (CI) of PD were 1.42 (95% CI, 1.23-1.65) for those with H1/H1 genotype compared with all others and 1.52 (95% CI, 1.12-2.04) for all individuals carrying H1 haplotype versus all others. Based on the data available, the results were not significantly different according to sex, family history of PD, age at onset and dementia status.
  
  
  CONCLUSIONS
  Our results support the notion that tau gene H1 haplotype may be an important risk factor of PD.
authors.affiliation: Department of Neurology, the Third Hospital of Beijing University, Beijing, China. who626@163.com
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Yiqing
authors.initials: Y
authors.lastname: Song
authors.forename: Honglei
authors.initials: H
authors.lastname: Chen
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Fan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D016001:Confidence Intervals; D020022:Genetic Predisposition to Disease / Q000453:epidemiology*; D006239:Haplotypes; D006801:Humans; D015201:Meta-Analysis as Topic; D008875:Middle Aged; D016017:Odds Ratio; D010300:Parkinson Disease / Q000235:genetics*; D011110:Polymorphism, Genetic; D012307:Risk Factors; D016875:tau Proteins / Q000235:genetics*
chemical_list: D016875:tau Proteins