SCN2A
基因产物:钠离子通道α2亚基。
蛋白功能:主要在脑内表达,可与钠离子通道β亚基组成电压门控性钠通道,参与记忆的调控。
相关疾病:自限性家族性新生儿癫痫(AD);自限性家族性婴儿癫痫(AD)[1];遗传性癫痫伴热性惊厥附加症(AD)[5];发育性癫痫性脑病11型(部分可表现为婴儿癫痫伴游走性局灶性发作(AD)[2];大田原综合征(AD)[3];West 综合征(AD)[4];癫痫伴肌阵挛失张力发作(Doose syndrome)(AD)[4];Lennox-Gastaut综合征(AD)[4];Dravet 综合征(AD)[6]等)。
突变数据库:ClinVar数据库。
相关临床研究:PubMed数据库(PMID: 28379373 (Brain. 2017))
用药提醒:分功能增强型(部分对卡马西平、奥卡西平、苯妥英钠等钠通阻滞剂有一定效果,也存在一些效果不好的)和功能减弱型(使用卡马西平、奥卡西平、苯妥英钠等钠通阻滞剂可能会加重)。
讨论版块:点击进入SCN2A基因突变讨论版块。
参考文献
- Berkovic, S.F., et al., Benign familial neonatal-infantile seizures: characterization of a new sodium channelopathy.Ann Neurol, 2004. 55(4): p. 550-7.
- Howell, K.B., et al., SCN2A encephalopathy: A major cause of epilepsy of infancy with migrating focal seizures.Neurology, 2015. 85(11): p. 958-66.
- Touma, M., et al., Whole genome sequencing identifies SCN2A mutation in monozygotic twins with Ohtahara syndrome and unique neuropathologic findings.Epilepsia, 2013. 54(5): p. e81-5.
- Wolff M., et al., Genetic and phenotypic heterogeneity suggest therapeutic implications in SCN2A-related disorders. Brain 140:1316-1336.
- Liu, X.W., et al., The finding of a new heterozygous mutation site of the SCN2A gene in a monozygotic twin family carrying and exhibiting genetic epilepsy with febrile seizures plus (GEFS+) using targeted next-generation sequencing. Clin Neurol Neurosurg, 2018. 169: p. 86-91.
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Steel, D., et al., Dravet syndrome and its mimics: Beyond SCN1A. Epilepsia, 2017. 58(11): p. 1807-1816.