Mutation at the SCA17 locus is not a common cause of primary dystonia.
Spinocerebellar ataxia type 17 (SCA17) is a dominant progressive neurodegenerative disorder, caused by a triplet repeat expansion within the TATA-binding protein. As well as ataxia and dementia, Parkinsonism and dystonia are common in SCA17. In some pedigrees focal dystonia in the absence of ataxia has been described as a main clinical feature. To evaluate the relevance of SCA17 mutations for primary dystonia, we examined the TBP repeat expansion in a series of 288 patients with different subtypes of primary torsion dystonia. We did not find any repeat sizes in the pathogenic range. We conclude that the SCA17 repeat expansion is not a common cause of familial and sporadic dystonia.
Grundmann
Kathrin
K
Department of Medical Genetics, University Tübingen, Calwerstrasse 7, 72076 Tübingen, Germany. kathrin.grundmann@onlinehome.de
Laubis-Herrmann
Ulrike
U
Dressler
Dirk
D
Vollmer-Haase
Juliane
J
Bauer
Peter
P
Stuhrmann
Manfred
M
Schulte
Thorsten
T
Schöls
Ludger
L
Topka
Helge
H
Riess
Olaf
O
D000328:Adult; D004252:DNA Mutational Analysis / Q000379:methods; D020821:Dystonic Disorders / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009154:Mutation; D035181:TATA-Box Binding Protein / Q000235:genetics; D019680:Trinucleotide Repeat Expansion
D035181:TATA-Box Binding Protein