Frequent mutations of SCN1A in severe myoclonic epilepsy in infancy

Sugawara T, Mazaki-Miyazaki E, Fukushima K, Shimomura J, Fujiwara T, Hamano S, Inoue Y, Yamakawa K

Neurology. 2002 Apr 9;58(7):1122-4

Mutations in the neuronal voltage-gated sodium channel alpha-subunit type I gene (SCN1A) were found responsible for severe myoclonic epilepsy in infancy (SMEI). The authors describe novel mutations of SCN1A in Japanese patients with SMEI. They screened 12 unrelated patients and a pair of monozygotic twins and detected 10 mutations that lead to truncation of the protein.

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Gene(s): SCN1A