title: [Correlation study of semaphorin 5a with risk of Parkinson's disease in a Chinese Han population].
abstract: OBJECTIVE
  To investigate the relationship of Semaphorin 5A (SEMA5A) and risk of Parkinson's disease (PD).
  
  
  METHODS
  Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay was used to check two single nucleotide polymorphisms (SNPs) within SEMA5A in 244 PD patients and 174 healthy control subjects of Chinese Han ancestry. And the results were verified by gene sequencing.
  
  
  RESULTS
  The SEMA5A variant genotype (allele) of rs7702187 and rs3798097 had no correlation with the risk of PD in the samples (rs7702187: OR(genotype AT) 0.95, 95% CI 0.61-1.48, OR (genotype AA) = 1.84, 95% CI 0.85-3.99, OR(genotype AT + AA) = 1.21, 95% CI 0.82-1.77, P > 0.05; rs3798097: OR(genotype CT) = 1.06, 95% CI 0.62-1.79, OR(genotype TT) = 0.72, 95% CI 0.10-5.18, OR(genotype CT + T) = 1.01, 95% CI 0.62-1.67, P > 0.05). Comparing with the most common haplotype TC, neither AC haplotype nor TT haplotype showed any correlation with risk of PD (OR = 1.19, 95% CI 0.84-1.69 for AC haplotype P > 0.05; OR = 0.99, 95% CI 0.59-1.70 for TT haplotype, P > 0.05).
  
  
  CONCLUSIONS
  SEMA5A is not implicated in PD risk in a Chinese Han population.
authors: Department of Neurology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
authors: Hai-rong
authors: HR
authors: Dong
authors: Ye
authors: Y
authors: Hua
authors: Xin-sheng
authors: XS
authors: Ding
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D002681:China / Q000453:epidemiology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000208:ethnology; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D008875:Middle Aged; D009419:Nerve Tissue Proteins / Q000235:genetics*; D010300:Parkinson Disease / Q000453:epidemiology / Q000208:ethnology / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D039961:Semaphorins
chemical_list: D008565:Membrane Proteins; D009419:Nerve Tissue Proteins; C491228:SEMA5A protein, human; D039961:Semaphorins