Journal
SEIZURE-EUROPEAN JOURNAL OF EPILEPSY
Volume 21, Issue 9, Pages 740-742Publisher
W B SAUNDERS CO LTD
DOI: 10.1016/j.seizure.2012.07.006
Keywords
Benign familial infantile convulsions; PRRT2; Infantile convulsions with choreoathetosis syndrome; Paroxysmal kinesigenic dyskinesia; Fukuyama-Watanabe-Vigevano syndrome
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Funding
- Deutsche Forschungsgemeinschaft [STE16511-2]
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Purpose: Mutations in the PRRT2 gene have been recently described as a cause of paroxysmal kinesigenic dyskinesia, infantile convulsions with choreoathetosis syndrome and, less often, infantile convulsions. We have analysed the frequency of PRRT2 mutations in families with benign familial infantile convulsions without paroxysmal kinesigenic dyskinesia. Methods and results: Direct sequencing of the coding region identified the PRRT2 mutation c.649dupC in 5/5 families with infantile convulsions. The mutation was present in 23 family members, of which 18 were clinically affected and 2 were obligate carriers. The affected carriers of this mutation presented with different types of epileptic seizures during early childhood but did not develop additional neurological symptoms later in life. Conclusion: Our data demonstrate that the PRRT2 mutation c.649dupC is a frequent cause of benign familial infantile convulsions. (c) 2012 British Epilepsy Association. Published by Elsevier Ltd. All rights reserved.
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