Mosaicism of a missense SCN1A mutation and Dravet syndrome in a Roma/Gypsy family

被引:12
作者
Azmanov, Dimitar N. [1 ,11 ]
Zhelyazkova, Sashka [2 ]
Dimova, Petya S. [3 ]
Radionova, Melania [2 ]
Bojinova, Veneta [3 ]
Florez, Laura [1 ,11 ]
Smith, Shelagh J. [4 ]
Tournev, Ivailo [2 ,5 ]
Jablensky, Assen [6 ]
Mulley, John [7 ]
Scheffer, Ingrid [8 ,9 ]
Kalaydjieva, Luba [1 ,11 ]
Sander, Josemir W. [4 ,10 ]
机构
[1] Univ Western Australia, Western Australian Inst Med Res, Perth, WA 6009, Australia
[2] Med Univ, Dept Neurol, Sofia, Bulgaria
[3] Med Univ, Clin Child Neurol, St Naum Univ Hosp Neurol & Psychiat, Sofia, Bulgaria
[4] UCL Inst Neurol, Dept Clin & Expt Epilepsy, London, England
[5] New Bulgarian Univ, Dept Cognit Sci & Psychol, Sofia, Bulgaria
[6] Univ Western Australia, Sch Psychiat & Clin Neurosci, Perth, WA 6009, Australia
[7] Womens & Childrens Hosp, Epilepsy Res Program, Adelaide, SA, Australia
[8] Univ Melbourne, Dept Med, Heidelberg, Vic, Australia
[9] Univ Melbourne, Royal Childrens Hosp, Dept Paediat, Melbourne, Vic, Australia
[10] SEIN Epilepsy Inst Netherlands Fdn, Heemstede, Netherlands
[11] Univ Western Australia, Mol Genet Lab, Med Res Ctr, Perth, WA 6009, Australia
基金
英国医学研究理事会;
关键词
Dravet syndrome; GEFS; SCN1A; mutation; mosaicism; febrile seizures plus; borderline SMEI; SEVERE MYOCLONIC EPILEPSY; FEBRILE SEIZURES; SODIUM-CHANNEL; INFANCY SMEI; GENERALIZED EPILEPSY; GENE SCN1A; SPECTRUM;
D O I
10.1684/epd.2010.0311
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
SCN1A mutations account for a large proportion of Dravet syndrome patients, and are reported in other cases of epilepsy, such as some families with genetic epilepsy with febrile seizures plus (GEFS+). While most Dravet syndrome cases are caused by de novo mutations, 5% inherit a mutation from a mildly affected or symptom-free parent. Parental mosaicism has been identified, with documented cases involving truncating mutations or gene rearrangements. We describe a Roma/Gypsy family, where a missense mutation in SCN1A, p.D194N, is transmitted from a mosaic GEFS+ father to a child with Dravet syndrome. Mosaicism may be more common than assumed and should be considered regardless of the nature of the mutation.
引用
收藏
页码:117 / 124
页数:8
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