Phenotype analysis in patients with early onset Parkinson's disease with and without parkin mutations.

Abstract excerpt

The data regarding whether parkin genotype attributes phenotypic variation are conflicting. Since the incidence of parkin mutations is very low in patients with an age at onset (AAO) of >40 years, previous studies have unfairly compared phenotypes of two early onset Parkinson's disease (EOPD) groups with different AAOs. Thus, we compared the clinical features between patients with and without parkin mutations in...

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