De novo mutations in ATP1A3 cause alternating hemiplegia of childhood.

De novo mutations in ATP1A3 cause alternating hemiplegia of childhood.
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DOI:
10.1038/ng.2358
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发表时间:
2012-09
期刊:
影响因子:
30.8
通讯作者:
Goldstein, David B.
Goldstein, David B.
中科院分区:
生物学1区
文献类型:
--
作者:
Heinzen, Erin L.;Swoboda, Kathryn J.;Hitomi, Yuki;Gurrieri, Fiorella;Nicole, Sophie;de Vries, Boukje;Tiziano, F. Danilo;Fontaine, Bertrand;Walley, Nicole M.;Heavin, Sinead;Panagiotakaki, Eleni;Fiori, Stefania;Abiusi, Emanuela;Di Pietro, Lorena;Sweney, Matthew T.;Newcomb, Tara M.;Viollet, Louis;Huff, Chad;Jorde, Lynn B.;Reyna, Sandra P.;Murphy, Kelley J.;Shianna, Kevin V.;Gumbs, Curtis E.;Little, Latasha;Silver, Kenneth;Ptacek, Louis J.;Haan, Joost;Ferrari, Michel D.;Bye, Ann M.;Herkes, Geoffrey K.;Whitelaw, Charlotte M.;Webb, David;Lynch, Bryan J.;Uldall, Peter;King, Mary D.;Scheffer, Ingrid E.;Neri, Giovanni;Arzimanoglou, Alexis;van den Maagdenberg, Arn M. J. M.;Sisodiya, Sanjay M.;Mikati, Mohamad A.;Goldstein, David B.

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儿童交替性偏瘫 (AHC) 是一种罕见的严重神经发育综合征,其特征是反复发作的偏瘫发作和独特的神经系统表现。 AHC 通常是一种病因不明的散发性疾病。通过对 7 名 AHC 患者及其未受影响的父母进行外显子组测序,我们在所有 7 名 AHC 患者中发现了 ATP1A3 的从头非同义突变。随后对另外 98 名患者进行的 ATP1A3 序列分析显示,78% 的 AHC 病例可能存在 ATP1A3 致病突变,其中包括 AHC 家族病例中的一种遗传突变。值得注意的是,六种 ATP1A3 突变解释了大多数患者的情况,其中包括在 36 名患者中观察到的一种突变。与引起快速发作的肌张力障碍帕金森病的 ATP1A3 突变不同,引起 AHC 的突变显示 ATP 酶活性持续降低,而不影响蛋白质表达。这项工作将 ATP1A3 从头突变确定为 AHC 的主要原因,并通过扩大与该基因突变相关的表型谱来深入了解疾病病理生理学。
Alternating hemiplegia of childhood (AHC) is a rare, severe neurodevelopmental syndrome characterized by recurrent hemiplegic episodes and distinct neurologic manifestations. AHC is usually a sporadic disorder with unknown etiology. Using exome sequencing of seven patients with AHC, and their unaffected parents, we identified de novo nonsynonymous mutations in ATP1A3 in all seven AHC patients. Subsequent sequence analysis of ATP1A3 in 98 additional patients revealed that 78% of AHC cases have a likely causal ATP1A3 mutation, including one inherited mutation in a familial case of AHC. Remarkably, six ATP1A3 mutations explain the majority of patients, including one observed in 36 patients. Unlike ATP1A3 mutations that cause rapid-onset-dystonia-parkinsonism, AHC-causing mutations revealed consistent reductions in ATPase activity without effects on protein expression. This work identifies de novo ATP1A3 mutations as the primary cause of AHC, and offers insight into disease pathophysiology by expanding the spectrum of phenotypes associated with mutations in this gene.
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