Novel Mutation in Potassium Channel related Gene KCTD7 and Progressive Myoclonic Epilepsy

Summary Progressive myoclonic epilepsy (PME) is a heterogeneous group of epilepsies characterized by myoclonus, seizures and progressive neurological symptoms. The index patient was a 6‐year old boy showing early‐onset therapy resistant PME and severe developmental delay. Genome‐wide linkage analysi...

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Veröffentlicht in:Annals of human genetics 2012-07, Vol.76 (4), p.326-331
Hauptverfasser: Krabichler, Birgit, Rostasy, Kevin, Baumann, Matthias, Karall, Daniela, Scholl-Bürgi, Sabine, Schwarzer, Christoph, Gautsch, Kurt, Spreiz, Ana, Kotzot, Dieter, Zschocke, Johannes, Fauth, Christine, Haberlandt, Edda
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Sprache:eng
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Zusammenfassung:Summary Progressive myoclonic epilepsy (PME) is a heterogeneous group of epilepsies characterized by myoclonus, seizures and progressive neurological symptoms. The index patient was a 6‐year old boy showing early‐onset therapy resistant PME and severe developmental delay. Genome‐wide linkage analysis identified several candidate regions. The potassium channel tetramerization domain containing 7 gene (KCTD7) in the 7q11.21 linkage region emerged as a suitable candidate. Sequence analysis revealed a novel homozygous missense mutation (p.R94W) in a highly conserved segment of exon 2. This is the second family with PME caused by KCTD7 mutations, hence KCTD7 mutations might be a recurrent cause of PME.
ISSN:0003-4800
1469-1809
DOI:10.1111/j.1469-1809.2012.00710.x