Pathogenicity of the Lrrk2 R1514Q substitution in Parkinson's disease

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An increasing number of nonsynonymous LRRK2 variants are being reported as putative pathogenic mutations. We identified one large kindred harboring the Lrrk2 R1514Q substitution; however, the variant did not segregate fully with disease. Combined analyses of three case–control series demonstrate that the R1514Q substitution is not associated with increased risk of disease (OR: 1.3; 95% CI: 0.6–2.8; P = 0.45). These findings highlight the importance of using family-based studies and multiple population screenings when examining the association of these polymorphic LRRK2 gene variants with Parkinson's disease. © 2007 Movement Disorder Society

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