Source:http://linkedlifedata.com/resource/pubmed/id/15532032
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
2004-11-11
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pubmed:abstractText |
We describe a unique family in which several individual are affected with episodes of ataxia that best fit the phenotype of episodic ataxia type 2 (EA2). All of the affected family members had episodes typically lasting for several hours, and none of them had muscle abnormalities including myokymia. Episodic ataxia type 1 (EA1) was not considered initially as a clinical diagnosis for the affected individuals in this family. However, by linkage mapping, sequencing and polymorphism analysis, all affecteds were found to have a novel mutation in KCNA1. Numerous missense mutations have been described previously in KCNA1 that cause EA1. The mutation c.1025G>T replaces a highly conserved serine with isoleucine at position 342 (p.Ser342Ile) in the highly conserved fifth transmembrane domain of the KCNA1. This mutation leads to a distinct clinical phenotype without myokymia broadening the scope of clinical characteristics of EA1 and highlighting the heterogeneity of phenotypic effects from distinct missense mutations.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
1098-1004
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 2004 Wiley-Liss, Inc.
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pubmed:issnType |
Electronic
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pubmed:volume |
24
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
536
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:15532032-Adult,
pubmed-meshheading:15532032-Amino Acid Sequence,
pubmed-meshheading:15532032-Ataxia,
pubmed-meshheading:15532032-Chromosome Mapping,
pubmed-meshheading:15532032-Chromosomes, Human, Pair 19,
pubmed-meshheading:15532032-Female,
pubmed-meshheading:15532032-Genetic Linkage,
pubmed-meshheading:15532032-Humans,
pubmed-meshheading:15532032-Kv1.1 Potassium Channel,
pubmed-meshheading:15532032-Male,
pubmed-meshheading:15532032-Molecular Sequence Data,
pubmed-meshheading:15532032-Mutation, Missense,
pubmed-meshheading:15532032-Myokymia,
pubmed-meshheading:15532032-Pedigree,
pubmed-meshheading:15532032-Potassium Channels, Voltage-Gated,
pubmed-meshheading:15532032-Sequence Analysis, DNA
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pubmed:year |
2004
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pubmed:articleTitle |
A novel mutation in KCNA1 causes episodic ataxia without myokymia.
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pubmed:affiliation |
Department of Human Genetics, University of California, Los Angeles, California, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Case Reports,
Research Support, N.I.H., Extramural
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