| Literature DB >> 22243967 |
Sarah E Heron1, Bronwyn E Grinton, Sara Kivity, Zaid Afawi, Sameer M Zuberi, James N Hughes, Clair Pridmore, Bree L Hodgson, Xenia Iona, Lynette G Sadleir, James Pelekanos, Eric Herlenius, Hadassa Goldberg-Stern, Haim Bassan, Eric Haan, Amos D Korczyn, Alison E Gardner, Mark A Corbett, Jozef Gécz, Paul Q Thomas, John C Mulley, Samuel F Berkovic, Ingrid E Scheffer, Leanne M Dibbens.
Abstract
Benign familial infantile epilepsy (BFIE) is a self-limited seizure disorder that occurs in infancy and has autosomal-dominant inheritance. We have identified heterozygous mutations in PRRT2, which encodes proline-rich transmembrane protein 2, in 14 of 17 families (82%) affected by BFIE, indicating that PRRT2 mutations are the most frequent cause of this disorder. We also report PRRT2 mutations in five of six (83%) families affected by infantile convulsions and choreoathetosis (ICCA) syndrome, a familial syndrome in which infantile seizures and an adolescent-onset movement disorder, paroxysmal kinesigenic choreoathetosis (PKC), co-occur. These findings show that mutations in PRRT2 cause both epilepsy and a movement disorder. Furthermore, PRRT2 mutations elicit pleiotropy in terms of both age of expression (infancy versus later childhood) and anatomical substrate (cortex versus basal ganglia).Entities:
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Year: 2012 PMID： 22243967 PMCID： PMC3257886 DOI： 10.1016/j.ajhg.2011.12.003
Source DB: PubMed Journal: Am J Hum Genet ISSN： 0002-9297 Impact factor: 11.025