Association of NIPA1 repeat expansions with amyotrophic lateral sclerosis in a large international cohort.

Association of NIPA1 repeat expansions with amyotrophic lateral sclerosis in a large international cohort.
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DOI:
10.1016/j.neurobiolaging.2018.09.012
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发表时间:
2019-03
影响因子:
4.2
通讯作者:
Project MinE ALS Sequencing Consortium
Project MinE ALS Sequencing Consortium
中科院分区:
医学2区
文献类型:
--
作者:
Tazelaar GHP;Dekker AM;van Vugt JJFA;van der Spek RA;Westeneng HJ;Kool LJBG;Kenna KP;van Rheenen W;Pulit SL;McLaughlin RL;Sproviero W;Iacoangeli A;Hübers A;Brenner D;Morrison KE;Shaw PJ;Shaw CE;Panadés MP;Mora Pardina JS;Glass JD;Hardiman O;Al-Chalabi A;van Damme P;Robberecht W;Landers JE;Ludolph AC;Weishaupt JH;van den Berg LH;Veldink JH;van Es MA;Project MinE ALS Sequencing Consortium

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已知NIPA 1(Prader-Willi/Angelman综合征1中的非印记)突变会导致遗传性痉挛性截瘫6型,这是一种神经退行性疾病,在表型上与肌萎缩侧索硬化症(ALS)在一定程度上重叠。此前,全基因组拷贝数变异筛查发现NIPA 1和ALS中的罕见缺失相关,随后的遗传分析显示NIPA 1中的长(或扩展)聚丙氨酸重复序列增加了ALS的易感性。我们着手进行一项大规模的复制研究,以进一步研究NIPA 1多聚丙氨酸扩增与ALS的作用,其中我们在一个独立的国际队列中对3955例ALS患者和2276例未受影响的对照组进行了NIPA 1重复序列大小的表征,并将我们的结果与以前的报告相结合。对6245名ALS患者和5051名对照者进行的荟萃分析显示,GCG重复长度扩大(>8)的患者患ALS的风险总体增加(比值比= 1.50,p = 3.8×10−5)。与以前的报告一起,这些发现为NIPA 1和ALS中扩展的多聚丙氨酸重复序列的关联提供了证据。
NIPA1 (nonimprinted in Prader-Willi/Angelman syndrome 1) mutations are known to cause hereditary spastic paraplegia type 6, a neurodegenerative disease that phenotypically overlaps to some extent with amyotrophic lateral sclerosis (ALS). Previously, a genomewide screen for copy number variants found an association with rare deletions in NIPA1 and ALS, and subsequent genetic analyses revealed that long (or expanded) polyalanine repeats in NIPA1 convey increased ALS susceptibility. We set out to perform a large-scale replication study to further investigate the role of NIPA1 polyalanine expansions with ALS, in which we characterized NIPA1 repeat size in an independent international cohort of 3955 patients with ALS and 2276 unaffected controls and combined our results with previous reports. Meta-analysis on a total of 6245 patients with ALS and 5051 controls showed an overall increased risk of ALS in those with expanded (>8) GCG repeat length (odds ratio = 1.50, p = 3.8×10−5). Together with previous reports, these findings provide evidence for an association of an expanded polyalanine repeat in NIPA1 and ALS.
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