Mammalian target of rapamycin pathway mutations cause hemimegalencephaly and focal cortical dysplasia.

Mammalian target of rapamycin pathway mutations cause hemimegalencephaly and focal cortical dysplasia.
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DOI:
10.1002/ana.24357
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发表时间:
2015-04
影响因子:
11.2
通讯作者:
Poduri, Annapurna
Poduri, Annapurna
中科院分区:
医学1区
文献类型:
--
作者:
D'Gama, Alissa M.;Geng, Ying;Couto, Javier A.;Martin, Beth;Boyle, Evan A.;LaCoursiere, Christopher M.;Hossain, Amer;Hatem, Nicole E.;Barry, Brenda J.;Kwiatkowski, David J.;Vinters, Harry V.;Barkovich, A. James;Shendure, Jay;Mathern, Gary W.;Walsh, Christopher A.;Poduri, Annapurna

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皮质发育的局灶性畸形,包括局灶性皮质发育不良(FCD)和半巨脑(HME),是儿童难治性癫痫的重要原因。对53例FCD或HME患者的脑组织标本和非脑组织标本的DNA进行靶向测序和外显子组测序,发现9例患者存在多种PI3K/AKT途径基因的致病种系突变和嵌合体突变,1例患者可能存在致病变异。我们的数据证实了DEPDC5与散发性FCD的关联,但也首次发现该基因与HME有关。我们的发现表明,mTOR通路的调节可能对畸形相关的癫痫有希望。
Focal malformations of cortical development, including focal cortical dysplasia (FCD) and hemimegalencephaly (HME), are important causes of intractable childhood epilepsy. Using targeted and exome sequencing on DNA from resected brain samples and non-brain samples from 53 patients with FCD or HME, we identified pathogenic germline and mosaic mutations in multiple PI3K/AKT pathway genes in 9 patients, and a likely pathogenic variant in 1 additional patient. Our data confirm the association of DEPDC5 with sporadic FCD but also implicate this gene for the first time in HME. Our findings suggest that modulation of the mTOR pathway may hold promise for malformation-associated epilepsy.
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