目的:分析1例由n UBA5基因突变导致的早发性癫痫性脑病患儿的临床及遗传学特征，并进行文献复习。n 方法:对2020年6月就诊于郑州大学第三附属医院小儿神经内科的1例n UBA5基因突变患儿的临床资料及遗传学特征进行回顾性分析，并检索国内外数据库，总结该病的临床特征及基因变异特点。n 结果:1．患儿，女，4月龄出现痉挛发作，脑电图提示高度失律，多种抗癫痫药物治疗效果欠佳，伴严重认知、运动发育落后、肌张力减退、小头畸形。全外显子组测序结果提示n UBA5基因复合杂合突变：第3外显子c.214C>T(p.R72C)及第9外显子c.844_c.845insA(p.Y282Xfs*1)，其父携带c.214C>T突变，其母携带c.844_c.845insA突变。2.至2020年12月，共检索到15例n UBA5突变所致早发性癫痫性脑病患者，表现为难以控制的癫痫发作、脑电图异常、肌张力减退、严重认知障碍及运动障碍、小头畸形、脑萎缩等。共发现n UBA5基因11种不同突变位点，其中c.1111G>A最常见，均符合常染色体隐性遗传。n 结论:UBA5基因突变可导致早发性癫痫性脑病，为常染色体隐性遗传，其起病年龄早，癫痫发作难以控制，远期预后差。n “,”Objective:To explore the clinical and genetic characteristics of a case of early-onset epileptic encephalopathy caused by the n UBA5 gene mutation and to review relevant literatures.n Methods:The clinical characte-ristics and genetic data of a child with the n UBA5 gene mutation in the Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University in June 2020 were retrospectively analyzed.Clinical characteristics and gene variation characteristics of the disease were reviewed in the domestic and foreign databases.n Results:(1) The female patient presented infantile spasms at the age of 4 months.Electroencephalogram(EEG) suggested hypsarrhythmia and she was not responsive to a variety of anti-epileptic drugs.Besides, the patient showed severe cognitive and motor development delay, hypotonia, and microcephaly.The results of whole exome sequencing showed that the compound heterozygous mutation of n UBA5 gene: exon 3 c. 214C>T (p.R72C) and exon 9 c. 844_c.845 insA (p.Y282Xfs*1), her father carries c. 214C>T mutation and her mother carries c. 844_c.845 INSA mutation.(2) To December 2020, a total of 15 cases of early-onset epileptic encephalopathy caused by then UBA5 gene mutation have been reported abroad.The main clinical manifestations were uncontrollable spasms, abnormal EEG findings, hypotonia, severe cognitive and movement disorders, microcephaly, and brain atrophy.A total of 11 mutation sites of the n UBA5 gene were found, all belonging to the autosomal recessive inheritance, of which c. 1111G>A was the most common.n Conclusions:The n UBA5 gene mutation can lead to early-onset epileptic encephalopathy, which belongs to the autosomal recessive inheritance.It is featured by the early onset, uncontrollable seizures and poor long-term prognosis.n