Medline ® Abstract for Reference 27
of 'Classification and evaluation of myoclonus'
27
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Distal myoclonus and late onset in a large Dutch family with myoclonus-dystonia.
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Foncke EM, Gerrits MC, van Ruissen F, Baas F, Hedrich K, Tijssen CC, Klein C, Tijssen MA
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Neurology. 2006;67(9):1677.
We report a large myoclonus-dystonia (M-D) pedigree with a two-base pair deletion in Exon 5 of the epsilon-sarcoglycan gene. Three individuals had onset after age 40 years. Distal myoclonus of the arms was present in all 20 symptomatic mutation carriers. These findings expand the known phenotype of M-D and require revision of the current diagnostic criteria. Five of 14 asymptomatic mutation carriers who inherited the mutation from their mother showed minimal axial dystonia, arguing against a maternal imprinting mechanism.
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Department of Neurology, Academic Medical Centre, University of Amsterdam, The Netherlands.
PMID