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  • Title: Analysis of mutations and the association between polymorphisms in the cerebral dopamine neurotrophic factor (CDNF) gene and Parkinson disease.
    Author: Choi JM, Hong JH, Chae MJ, Ngyuen PH, Kang HS, Ma HI, Kim YJ.
    Journal: Neurosci Lett; 2011 Apr 15; 493(3):97-101. PubMed ID: 21320571.
    Abstract:
    Neurotrophic factors support the survival of dopaminergic neurons. The cerebral dopamine neurotrophic factor (CDNF) is a novel neurotrophic factor with strong trophic activity on dopaminergic neurons comparable to that of glial cell line-derived neurotrophic factor (GDNF). To investigate whether rare or common variants in CDNF are associated with Parkinson disease (PD), we performed mutation analysis of CDNF and a genetic association study between CDNF polymorphisms and PD. We screened 110 early-onset Parkinson disease (EOPD) patients for CDNF mutations. Allelic and genotype frequencies of 3 CDNF single nucleotide polymorphisms (SNPs) (rs1901650, rs7094179, and rs11259365) were compared in 215 PD patients and age- and sex-matched controls. We failed to identify any mutations in CDNF among the EOPD patient sample population. We observed a trend towards increased risk for PD in patients carrying the C allele of SNP rs7094179 (odds ratio (OR)=1.27, 95% confidence interval (CI) 0.96-1.67). Patients carrying the C allele were susceptible to PD in both dominant (CC+CA vs. AA; OR=7.20, 95% CI 0.88-59.1) and recessive (CA+AA vs. CC; OR=0.64, 95% CI 0.41-0.99) models. Genotype and allele frequencies of SNPs rs1901650 and rs11259365 did not differ between PD patients and controls. Our study suggests that the C allele of an intronic CDNF SNP (rs7094179) might be an allele for susceptibility to PD. Further studies with larger sample size are required to confirm our results.
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