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- Title
Mutations in GNAL cause primary torsion dystonia.
- Authors
Fuchs, Tania; Saunders-Pullman, Rachel; Masuho, Ikuo; Luciano, Marta San; Raymond, Deborah; Factor, Stewart; Lang, Anthony E; Liang, Tsao-Wei; Trosch, Richard M; White, Sierra; Ainehsazan, Edmond; Hervé, Denis; Sharma, Nutan; Ehrlich, Michelle E; Martemyanov, Kirill A; Bressman, Susan B; Ozelius, Laurie J
- Abstract
Dystonia is a movement disorder characterized by repetitive twisting muscle contractions and postures. Its molecular pathophysiology is poorly understood, in part owing to limited knowledge of the genetic basis of the disorder. Only three genes for primary torsion dystonia (PTD), TOR1A (DYT1), THAP1 (DYT6) and CIZ1 (ref. 5), have been identified. Using exome sequencing in two families with PTD, we identified a new causative gene, GNAL, with a nonsense mutation encoding p.Ser293* resulting in a premature stop codon in one family and a missense mutation encoding p.Val137Met in the other. Screening of GNAL in 39 families with PTD identified 6 additional new mutations in this gene. Impaired function of several of the mutants was shown by bioluminescence resonance energy transfer (BRET) assays.
- Subjects
DYSTONIA musculorum deformans; GENETIC mutation; GENETIC disorders; MOVEMENT disorders; MUSCLE contraction; BIOLUMINESCENCE assay; G proteins
- Publication
Nature Genetics, 2013, Vol 45, Issue 1, p88
- ISSN
1061-4036
- Publication type
Article
- DOI
10.1038/ng.2496