中国当代儿科杂志
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中国当代儿科杂志  2020, Vol. 22 Issue (6): 595-601    DOI:10.7499/j.issn.1008-8830.1912040
论著·临床研究 最新目录| 下期目录| 过刊浏览| 高级检索 |
氨酰基-tRNA合成酶基因变异10例分析
吴腾辉1,2, 彭镜1,2, 张慈柳1,2, 吴丽文1,2, 杨丽芬1,2, 彭盼1,2, 庞楠1,2, 尹飞1,2, 何芳1,2
1. 中南大学湘雅医院儿科, 湖南 长沙 410008;
2. 湖南省儿童智力障碍研究中心, 湖南 长沙 410008
Mutations in aminoacyl-tRNA synthetase genes: an analysis of 10 cases
WU Teng-Hui1,2, PENG Jing1,2, ZHANG Ci-Liu1,2, WU Li-Wen1,2, YANG Li-Fen1,2, PENG Pan1,2, PANG Nan1,2, YIN Fei1,2, HE Fang1,2
Department of Pediatrics, Xiangya Hospital, Central South University, Changsha 410008, China
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摘要 

目的 研究氨酰基-tRNA合成酶(ARS)缺陷相关疾病的临床特征。方法 回顾性分析2016年1月至2019年10月通过二代测序诊断的10例ARS基因变异患儿的临床资料及基因突变类型。结果 10例ARS基因变异患儿中,起病年龄为0~9岁,首发症状多为抽搐(7例)。临床表现为共济失调为主而智力轻度落后或正常,伴或不伴有癫痫(4例);或儿童期起病的癫痫,后出现发育倒退(2例);也可表现为新生儿期起病,严重癫痫脑病,出现肌阵挛、全面强直及痉挛发作(4例),伴有严重发育落后(3例)、喂养困难(2例)、听力损害(1例)等。10例患儿中,共检测出5种基因突变,包括AARS2(c.331G > C、c.2682+5G > A、c.2164C > T、c.761G > A,均为新突变)3例,DARS2(c.228-16C > A、c.536G > A,均为已报道突变)2例,CARS2(c.1036C > T、c.323T > G,均为新突变)1例,RARS2(c.1210A > G、c.622C > T,均为新突变)1例,AARS(c.1901T > A、c.229C > T、c.244C > T、c.961G > C、Chr16:70298860-70316687del、c.2248C > T,均为新突变)3例。结论 ARS基因缺陷相关疾病临床表型异质性高。该研究共发现5种ARS基因的14个未报道的变异,丰富了ARS缺陷相关疾病的临床表型及基因型。

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吴腾辉
彭镜
张慈柳
吴丽文
杨丽芬
彭盼
庞楠
尹飞
何芳
关键词 氨酰基-tRNA合成酶缺陷ARS2/ARS基因儿童    
Abstract:Objective To study the clinical features of the diseases associated with aminoacyl-tRNA synthetases (ARS) deficiency. Methods A retrospective analysis was performed of the clinical and gene mutation data of 10 children who were diagnosed with ARS gene mutations, based on next-generation sequencing from January 2016 to October 2019. Results The age of onset ranged from 0 to 9 years among the 10 children. Convulsion was the most common initial symptom (7 children). Clinical manifestations included ataxia and normal or mildly retarded intellectual development (with or without epilepsy; n=4) and onset of epilepsy in childhood with developmental regression later (n=2). Some children experienced disease onset in the neonatal period and had severe epileptic encephalopathy, with myoclonus, generalized tonic-clonic seizure, and convulsive seizure (n=4); 3 had severe delayed development, 2 had feeding difficulty, and 1 had hearing impairment. Mutations were found in five genes:3 had novel mutations in the AARS2 gene (c.331G > C, c.2682+5G > A, c.2164C > T, and c.761G > A), 2 had known mutations in the DARS2 gene (c.228-16C > A and c.536G > A), 1 had novel mutations in the CARS2 gene (c.1036C > T and c.323T > G), 1 had novel mutations in the RARS2 gene (c.1210A > G and c.622C > T), and 3 had novel mutations in the AARS gene (c.1901T > A, c.229C > T, c.244C > T, c.961G > C, c.2248C > T, and Chr16:70298860-70316687del). Conclusions A high heterogeneity is observed in the clinical phenotypes of the diseases associated with the ARS deficiency. A total of 14 novel mutations in 5 genes are reported in this study, which enriches the clinical phenotypes and genotypes of the diseases associated with ARS deficiency.
Key wordsAminoacyl-tRNA synthetases deficiency    ARS/ARS2 gene    Child   
收稿日期: 2019-12-09     
通讯作者: 何芳,女,博士,主治医师。Email:bubbly_ho@163.com。     E-mail: bubbly_ho@163.com
作者简介: 吴腾辉,女,硕士研究生。
引用本文:   
吴腾辉,彭镜,张慈柳等. 氨酰基-tRNA合成酶基因变异10例分析[J]. 中国当代儿科杂志, 2020, 22(6): 595-601.
WU Teng-Hui,PENG Jing,ZHANG Ci-Liu et al. Mutations in aminoacyl-tRNA synthetase genes: an analysis of 10 cases[J]. CJCP, 2020, 22(6): 595-601.
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