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Mov Disord. 2003 Jun;18(6):631-6.

Complex interactions in Parkinson's disease: a two-phased approach.

Author information

1
Department of Neurology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA. dmaraganore@mayo.edu

Abstract

The identification of pathogenic mutations in the three genes alpha-synuclein, parkin, and ubiquitin carboxy-terminal hydrolase L1 (UCHL1) has elucidated the ubiquitin proteasome system (UPS) and its potential role as a causal pathway in Parkinson's disease (PD). In addition, polymorphisms of these three genes have been shown to be independently associated with PD. In a sample of 298 unrelated PD cases and 185 controls, we applied a two-phased approach of recursive partitioning and logistic regression analyses to explore complex interactions. For women only, we observed an epistatic interaction of UCHL1 and alpha-synuclein genotypes with significant effects on PD risk (odds ratio = 2.42; P = 0.003). Our findings are consistent with the hypothesis that PD is a multigenic disorder of the UPS.

PMID:
12784265
DOI:
10.1002/mds.10431
[Indexed for MEDLINE]
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