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Eur J Paediatr Neurol. 2010 Jul;14(4):349-53. doi: 10.1016/j.ejpn.2009.11.001. Epub 2009 Dec 21.

Pyruvate dehydrogenase E2 deficiency: a potentially treatable cause of episodic dystonia.

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  • 1Ferguson Smith Centre for Clinical Genetics, Yorkhill Hospital, Dalnair Street, Glasgow, G3 8SJ, UK. cmcwilliam1@nhs.net

Abstract

The association of progressive episodic dystonia and learning disability with distinctive neuroimaging findings may lead to consideration of atypical Pantothenate Kinase Associated Neurodegeneration (PKAN) and investigations directed towards that diagnosis. Recent reports indicate that deficiency of dihydrolipoamide acetyltransferase, the E2 component of the pyruvate dehydrogenase complex, may present similarly, and that this disorder should also be considered in the differential diagnosis. We describe two sisters with early onset episodic dystonia and pyruvate dehydrogenase deficiency caused by defects in the E2 subunit. Both have neuroimaging features similar to previously described patients and have mutations in the DLAT gene. As this condition is potentially treatable with a ketogenic diet, the possibility of this diagnosis should be considered in similar cases.

Copyright (c) 2009 European Paediatric Neurology Society. Published by Elsevier Ltd. All rights reserved.

PMID:
20022530
[PubMed - indexed for MEDLINE]
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