Genetic screening of Scandinavian families with febrile seizures and epilepsy or GEFS+.
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Selmer KK, Egeland T, Solaas MH, Nakken KO, Kjeldsen MJ, Friis ML, Brandal K, Corey LA, Undlien DE
Genetic screening of Scandinavian families with febrile seizures and epilepsy or GEFS+.
Acta Neurol Scand. 2008 Apr;117(4):289-92. Epub 2007 Oct 10.
- PubMed ID
- 17927801 [ View in PubMed]
- Abstract
BACKGROUND: Mutations in the three genes SCN1A, SCN1B and GABRG2, all encoding subunits of ion channels, have been known to cause generalized epilepsy with febrile seizures plus (GEFS+) in families of different origin. OBJECTIVE: To study the occurrence of mutations in these genes in families with GEFS+ or a GEFS+ resembling phenotype of Scandinavian origin. MATERIAL AND METHODS: We performed linkage analysis in 19 Scandinavian families with a history of febrile seizures (FS) and epilepsy or GEFS+. Where linkage could not be excluded, the genes of interest were sequenced. RESULTS: We identified only one mutation in SCN1A, which seems to be a rare variant with no functional consequence. CONCLUSION: This suggests that mutations in these three genes are not a prevalent cause of familial cases of FS and epilepsy or GEFS+ in Scandinavia.