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J Neurol. 2002 Nov;249(11):1515-9.

Episodic ataxia type 2. Three novel truncating mutations and one novel missense mutation in the CACNA1A gene.

Author information

1
MGC-Department of Human Genetics, Leiden University Medical Centre, Leiden, The Netherlands.

Abstract

We analysed the CACNA1A gene, located on chromosome 19p13, in three unrelated families and one sporadic case with episodic ataxia type 2 (EA-2). In two of the families and the sporadic patient, novel truncating mutations, which disrupt the reading frame and result in a premature stop of the CACNA1A protein, were identified in exons 14, 16 and 26. In the remaining family, a novel missense mutation (H253Y) was found. Of the twenty two EA-2 mutations identified thus far, including those of the present study, seventeen are truncating mutations and five are missense mutations, all resulting in an EA-2 clinical phenotype.

PMID:
12420090
DOI:
10.1007/s00415-002-0860-8
[Indexed for MEDLINE]

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