SCN1A

SCN1A

A gene on chromosome 2q24.3 that encodes a large alpha subunit of a transmembrane glycoprotein complex, which forms a voltage-gated sodium channel. The SCN1A protein product is expressed in muscle and brain.

Molecular pathology
SCN1A mutations are linked to various seizure and migraine disorders.
References in periodicals archive ?
Approximately 85% of Dravet syndrome cases are caused by spontaneous, heterozygous loss of function mutations in the SCN1A gene.
STK-001 is designed to selectively upregulate one allele of the SCN1A gene to restore the protein expression to near-normal levels.
Bu yatkinlik genetik bir nedeni dusundurmekte olup 2001 yilinda voltaj kapili sodyum kanallarinin al alt unitesini kodlayan SCN1A geni mutasyonlari ile hastaligin iliskisi kanitlanmistir (5).
Generalized epilepsy with febrile seizures plus(GEFS+): clinical spectrum in seven Italian families unrelated to SCN1A, SCN1B and GABRG2 gene mutations.
Dravet syndrome is a type of epileptic encephalopathy that is associated with SCN1A sodium channel mutations.
Quest Diagnostics ease, ci mother sued the lab after it conducted her son's genetic testing for Dravet's disease under the theory that its failure to label her son's SCN1A mutation as disease-causing led to his death.
(%) NPHS2 V260E rs775006954 0.005 TTN T587Hfr11Ter NA NR SCN1A R604C rs148371904 0.002 SCN11A R838Q rs149681198 0.007 SPTBN4 R527W NA NR HSPG2 R2196W rs5 66319401 0.003 DSG L171F rs199926617 0.002 Variant impact prediction (b) Gene ACMG class Sift Mutation PolyPhen Tester NPHS2 Del.
[63] showed an increasing risk of SJS/TEN that is dependent on the epoxide hydrolase 1 (EPHX1) polymorphism, yet no influence of CYP3A4, multidrug resistance protein 1, FAS, and SCN1a polymorphism in Chinese Han population could be observed.
Preliminary studies indicate that agnogenic EOEE might be related to gene mutation,[9] and the results of genetic tests of part of our enrolled cases showed gene mutation in gene STXBP1, SCN1A, and KCNQ2 in our patient, which also have been reported in the previous studies.[10],[11] 33 (53.2%) infants in the nEOEE group had certain etiology, and most of them were mild to moderate HIE, IVH of degree II, benign familial neonatal convulsion, transient hypoglycemia, hypocalcemia, and hypomagnesemia.
It was previously known as Severe Myoclonic Epilepsy of Infancy, and affects one out of 15,700 individuals, 80 percent of whom have a mutation in their SCN1A gene, according to (https://www.dravetfoundation.org/what-is-dravet-syndrome/) Dravet Syndrome Foundation . 
Currently, we recognize three types of FHM, each of them linked to a different gene [8]: CACNA1A, ATP1A2, and SCN1A. The only prevalence study was conducted in Denmark and it showed a prevalence of 0.003%, but in Portugal there are many families identified either with HM (namely type I) or with episodic ataxia type 2 or spinocerebellar ataxia type 6 [28-31].