title: Confirmation of LRRK2 S1647T variant as a risk factor for Parkinson's disease in southern China.
abstract: BACKGROUND
  Leucine-rich repeat kinase 2 (LRRK2) S1647T has been identified as a risk variant for Parkinson's disease (PD) in Han Chinese.
  
  
  METHODS
  To replicate the association of LRRK2 S1647T with risk of PD, we conducted a case-control study of this variant involving 406 PD subjects and 412 controls from southern mainland China.
  
  
  RESULTS
  The results showed that the frequency of A allele was higher in patients with PD (OR=1.238, 95% CI: 1.015-1.510, P=0.035) compared to controls. In a multivariate logistic regression analysis with the disease group (patients with PD vs. controls) as the dependent variable and genotype as an independent factor adjusting for the effect of age and gender, the homozygous S1647T genotype (AA) was associated with an increased risk of PD (OR=1.815, 95% CI:1.270-2.594, P=0.001). The pooled analysis of present data and the data from the previous work demonstrated that the frequency of A allele was higher in patients with PD (OR=1.2, 95% CI: 1.09-1.32, P<0.0001).
  
  
  CONCLUSIONS
  LRRK2 S1647T increases the risk of Parkinson's disease in southern China.
authors.affiliation: Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Zheng
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: Q
authors.initials: Q
authors.lastname: Wu
authors.forename: H
authors.initials: H
authors.lastname: Hong
authors.forename: H
authors.initials: H
authors.lastname: Zhou
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Xian
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
authors.forename: Z
authors.initials: Z
authors.lastname: Pei
authors.forename: L
authors.initials: L
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000235:genetics; D002681:China; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006801:Humans; D000071158:Leucine-Rich Repeat Serine-Threonine Protein Kinase-2; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000235:genetics*; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*; D012307:Risk Factors; D055815:Young Adult
chemical_list: C495280:LRRK2 protein, human; D000071158:Leucine-Rich Repeat Serine-Threonine Protein Kinase-2; D017346:Protein Serine-Threonine Kinases