Bioptically demonstrated Lafora disease without EPM2A mutation: a clinical and neurophysiological study of two sisters.

Abstract:

:Lafora disease (LD) is an autosomal recessive inherited form of progressive myoclonic epilepsy with dementia and ataxia, usually presenting in the second decade of life and inexorably progressing until death. Neuropathological hallmarks are Lafora bodies, intracytoplasmic inclusions that can be found in neurons and in other tissues. LD gene (EPM2A), mapping on chromosome 6, encodes for a tyrosine phosphatase protein called laforin. However, up to 20% cases of LD are not genetically linked to chromosome 6. We report two sisters affected from bioptically diagnosed LD but without evidence of EPM2A mutation. Although familial cases of LD are already reported in literature, our observation leads to some considerations on clinical-electrophysiological evolution as well as to remark the genetic heterogeneity of this condition. In addition, we report the good effect of the Levetiracetam for the treatment of myoclonus in these patients, also demonstrated by the electrophysiological findings.

journal_name

Clin Neurol Neurosurg

authors

Boccella P,Striano P,Zara F,Barbieri F,Sarappa C,Vacca G,de Falco FA,Striano S

doi

10.1016/j.clineuro.2003.07.003

keywords:

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

55-9

issue

1

eissn

0303-8467

issn

1872-6968

pii

S0303846703000775

journal_volume

106

pub_type

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