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  • Screening PARK genes for mutations in early-onset Parkinson's disease patients from Queensland, Australia

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    Author(s)
    Mellick, George D
    Siebert, Gerhard A
    Funayama, Manabu
    Buchanan, Daniel D
    Li, Yuanzhe
    Imamichi, Yoko
    Yoshino, Hiroyo
    Silburn, Peter A
    Hattori, Nobutaka
    Griffith University Author(s)
    Mellick, George
    Year published
    2009
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    Abstract
    A family history of Parkinson's disease (PD) is the most commonly reported risk factor after age, suggesting a genetic component to the disease in a sub-group of patients. Mutations in at least six genes have been identified that can lead to monogenic forms of PD. We screened a sample of 74 early-onset PD cases out of a cohort of 950 patients (onset <50 years) for genetic abnormalities in known familial Parkinsonism genes. A self-reported family history of PD existed for 30 patients (40.5%). Of these, 13 each had a first- or a second-degree relative with PD and four reported a more distant relative with PD. The entire coding ...
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    A family history of Parkinson's disease (PD) is the most commonly reported risk factor after age, suggesting a genetic component to the disease in a sub-group of patients. Mutations in at least six genes have been identified that can lead to monogenic forms of PD. We screened a sample of 74 early-onset PD cases out of a cohort of 950 patients (onset <50 years) for genetic abnormalities in known familial Parkinsonism genes. A self-reported family history of PD existed for 30 patients (40.5%). Of these, 13 each had a first- or a second-degree relative with PD and four reported a more distant relative with PD. The entire coding region of the PRKN (MIM 602544), DJ-1 (MIM 602533) and PINK1 (MIM 698309) genes, and exon 41 of the LRRK2 gene (MIM 609007) were screened by direct sequencing. All exons of PRKN were examined for gene-dosage abnormalities. Screening identified five patients with putative genetic disease: two patients carried PRKN mutations (p.G12R heterozygous and p.G430D homozygous), one patient carried a p.G411S heterozygous amino acid change in the PINK1 gene and two individuals were heterozygous for the common p.G2019S mutation in LRRK2. No alpha-synuclein or DJ-1 variants were observed. Our data suggest that approximately 7% of early-onset PD cases seen in Queensland movement disorders clinics have mutations involving known PARK genes.
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    Journal Title
    Parkinsonism & Related Disorders
    Volume
    15
    Issue
    2
    DOI
    https://doi.org/10.1016/j.parkreldis.2007.11.016
    Copyright Statement
    © 2009 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Clinical sciences
    Neurology and neuromuscular diseases
    Cognitive and computational psychology
    Publication URI
    http://hdl.handle.net/10072/30641
    Collection
    • Journal articles

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