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Träfflista för sökning "WFRF:(Farrer M J) ;pers:(Gasser T.)"

Sökning: WFRF:(Farrer M J) > Gasser T.

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  • Fuchs, J, et al. (författare)
  • Phenotypic variation in a large Swedish pedigree due to SNCA duplication and triplication.
  • 2007
  • Ingår i: Neurology. - : Ovid Technologies (Wolters Kluwer Health). - 1526-632X .- 0028-3878. ; 68:12, s. 916-922
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: The " Lister family complex," an extensive Swedish family with autosomal dominant Parkinson disease, was first described by Henry Mjones in 1949. On the basis of clinical, molecular, and genealogic findings on a Swedish and an American family branch, we provide genetic evidence that explains the parkinsonism in this extended pedigree. Methods: Clinical methods included a detailed neurologic exam of the proband of the Swedish family branch, MRI, and ([ 123] I) - beta - CIT SPECT imaging. Genomic analysis included alpha-synuclein sequencing, SNCA real-time PCR dosage, chromosome 4q21 microsatellite analysis, and high-resolution microarray genotyping. The geographic origin and ancestral genealogy of each pedigree were researched in the medical literature and Swedish Parish records. Results: The proband of the Swedish family branch presented with early dysautonomia followed by progressive parkinsonism suggestive of multiple system atrophy. Molecular analysis identified a genomic duplication of < 0.9 Mb encompassing alpha-synuclein and multimerin 1 ( SNCA- MMRN1), flanked by long interspersed repeat sequences ( LINE L1). Microsatellite variability within the genomic interval was identical to that previously described for a Swedish American family with an alpha- synuclein triplication. Subsequent genealogic investigation suggested that both kindreds are ancestrally related to the Lister family complex. Conclusion: Our findings extend clinical, genetic, and genealogical research on the Lister family complex. The genetic basis for familial parkinsonism is an SNCA- MMRN11 multiplication, but whereas SNCA- MMRN1 duplication in the Swedish proband ( Branch J) leads to late- onset autonomic dysfunction and parkinsonism, SNCA- MMRN1 triplication in the Swedish American family ( Branch I) leads to early- onset Parkinson disease and dementia.
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