Abstract：
BACKGROUND:Myoclonus dystonia syndrome (MDS) is a hyperkinetic movement disorder caused, in a proportion of cases, by mutations of the maternally imprinted epsilon-sarcoglycan gene (SGCE). SGCE mutation rates vary between cohorts, suggesting genetic heterogeneity. E- and ζ-sarcoglycan are both expressed in brain tissue. In this study we tested whether zeta-sarcoglycan gene (SGCZ) mutations also contribute to this disorder. METHODS:Patients with clinically suspected MDS and no SGCE mutation were recruited and classified, according to previously published criteria, as to their likelihood of the movement disorder. All SGCZ exons and intron/exon boundaries were screened by direct sequencing. RESULTS:Fifty-four SGCE mutation-negative patients were recruited from the UK and the Netherlands. Subdivided according to the likelihood of the movement disorder resulted in 17 'definite', 16 'probable' and 21 'possible' cases. No pathogenic SGCZ mutations were identified. CONCLUSIONS:SGCZ mutations are unlikely to contribute to the genetic heterogeneity in MDS.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Peall KJ,Ritz K,Waite AJ,Groen JL,Morris HR,Baas F,Blake DJ,Tijssen MAdoi
10.1016/j.neuroscience.2014.04.034subject
Has Abstractpub_date
2014-07-11 00:00:00pages
88-91eissn
0306-4522issn
1873-7544pii
S0306-4522(14)00337-6journal_volume
272pub_type
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