Novel de novo mutation of a conserved SCN1A amino-acid residue (R1596).

Abstract:

:We report on the case of a 6-year-old boy with epilepsy involving febrile seizures and unprovoked generalized tonic clonic seizures. Genetic testing revealed a novel de novo mutation in the SCN1A gene (C>T 4786, R1596C). The epilepsy phenotype is within the spectrum of generalized epilepsy with febrile seizures plus. However, de novo mutations are more commonly reported in cases of severe myoclonic epilepsy of infancy, and are less often reported in generalized epilepsy with febrile seizures plus. The clinical utility of specific genetic testing in this case is discussed, as are criteria for determining the pathologic significance of novel DNA variants. In this case, the wild type of residue (R1596) is well-conserved across evolution from bacteria to humans, providing support for the hypothesis that this mutation causes epilepsy.

journal_name

Pediatr Neurol

journal_title

Pediatric neurology

authors

Dlugos DJ,Ferraro TN,Buono RJ

doi

10.1016/j.pediatrneurol.2007.06.008

subject

Has Abstract

pub_date

2007-10-01 00:00:00

pages

303-5

issue

4

eissn

0887-8994

issn

1873-5150

pii

S0887-8994(07)00305-0

journal_volume

37

pub_type

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