title: Further delineation of the association signal on chromosome 5 from the first whole genome association study in Parkinson's disease.
abstract: A recently published whole genome association study showed the involvement of 13 SNPs in the pathogenesis of Parkinson disease (PD). We performed a replication study to assess their involvement in our sporadic cohort consisting of 663 cases and 1002 controls ascertained from Germany. One of the previously reported SNP, rs7723605, showed evidence of association (p value 0.04) in our sample. We further refined the signal by genotyping additional 22 SNPs around SNP rs7723605. Our refinement analysis, however, did not provide evidence for association in our sample after adjusting for multiple testing by permutation procedure. In conclusion, our study did not lend support to the finding that the reported SNPs are directly influencing the susceptibility to sporadic form of PD at least in our population.
authors.affiliation: Hertie-Institute for Clinical Brain Research, Department of Neurodegenerative Diseases, University of Tuebingen, Hoppe-Seyler Strasse 3, 72076 Tuebingen, Germany.
authors.forename: Manu
authors.initials: M
authors.lastname: Sharma
authors.forename: Peter
authors.initials: P
authors.lastname: Lichtner
authors.forename: Rejko
authors.initials: R
authors.lastname: Kruger
authors.forename: Daniela
authors.initials: D
authors.lastname: Berg
authors.forename: Claudia
authors.initials: C
authors.lastname: Schulte
authors.forename: Thomas
authors.initials: T
authors.lastname: Illig
authors.forename: Olaf
authors.initials: O
authors.lastname: Riess
authors.forename: Thomas
authors.initials: T
authors.lastname: Gasser
mesh_terms: D002895:Chromosomes, Human, Pair 5; D015331:Cohort Studies; D005260:Female; D005787:Gene Frequency; D055106:Genome-Wide Association Study; D005838:Genotype; D005858:Germany; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D010300:Parkinson Disease / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D017422:Sequence Analysis, DNA