GBE1基因突变型糖原累积病Ⅳ型1例报告

临床儿科杂志第 37 卷第 10 期  2019 年 10 月J Clin Pediatr Vol.37 No.10 Oct. 2019· 788 ·
doi:10.3969/j.issn.1000-3606.2019.10.017
GBE1基因突变糖原累积病Ⅳ型1例报告协议分析器
江苏南钢龙
仲 任 司绍永 王艺霖 李学荣
青岛大学附属医院(山东青岛 266003)
摘要: 目的 探讨GBE1基因突变的糖原累积病Ⅳ型(GSD IV)患儿的临床特点及其家系的基因突变情况。方法分析1例GSD IV 患儿的临床表现、肝脏病理结果及其父母的全外显子基因测序情况,并进行文献复习。结果 患儿,男,1岁10个月,肝脾肿大6月余伴发热7天;肝脏组织病理示慢性肝损伤,不能除外遗传代谢病。全基因外显子检测示患儿存在2种新的GBE1基因的杂合突变,分别为来自父亲的c.1694G>A杂合突变(致病性变异)和来自母亲的c.218A>G 杂合突变(疑似致病性变异)。结合患儿临床表现、病理及基因检测结果确诊为肝型GSD IV。结论 新发现GEB1基因
形位公差c.1694G>A的致病性杂合突变,丰富了GSD IV型在中国人的突变谱。
关键词: 糖原累积病IV型; GBE1基因; 肝脏活组织检查
战国时期的百家争鸣A new GBE1 mutation that causes glycogen accumulation disease type IV: a case report and literature review  ZHONG
黑龙江畜牧兽医杂志Ren, SI Shaoyong, WANG Yilin, LI Xuerong (The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, China) Abstract: Objective To explore the clinical characteristics of glycogen accumulation disease type IV (GSD IV) caused by GBE1 gene mutation in a child and the genetic mutations in the families. Methods The clinical manifestations, liver pathological results and parental all-exon gene sequencing of a child with GSD IV were analyzed and therelated literature was reviewed.在母亲心里流浪
Results A 1-year-and 10-month-old boy suffered from hepatosplenomegaly for more than 6 months and fever for 7 days. Liver histopathology showed chronic liver injury, and genetic metabolic disease could not be excluded. Whole-genome exon detection showed that the child had two new heterozygous mutations in GBE1 gene, the heterozygous mutation from the father (c.1694G>A, pathogenic mutation) and the heterozygous mutation from the mother (c.218A>G, suspected pathogenic mutation). Combined with the clinical manifestations, pathology and genetic test results, the patient was diagnosed with hepatic GSD IV. Conclusions The newly discovered pathogenic heterozygous mutationof GEB1 gene,C.1694G>A,enriches the mutation spectrum of GSD IV in Chin
ese population.
Key words: glycogen accumulation disease type IV; GBE1 gene; genetic examination; liver biopsy
糖原累积病IV 型(glycogen storage disease IV,GSD IV),是由于合成糖原的分支酶缺陷所致的常染体隐性遗传病,1956年首次报道,发病率为1/600000~1/800000,占糖原累积病的3%[1]。分支酶缺乏可导致异常糖原分子(直链长而分支少)在肝脏、心脏、骨骼肌以及中枢神经系统中累积,出现相应的症状和体征。GSD IV型临床表现异质性较大,缺乏特异性,需肝脏活检测定糖原分支酶活性或基因分析明确诊断。目前已报道的有关IV型糖原贮积病的多个不同位点的基因突变主要为错义突变,大多数突变位点位于外显子12和13内,这种突变可以导致蛋白质催化结构域改变从而损害GBE功能[2-5]。本文描述2种新的GBE1基因突变,分别为致病性和可疑致病性,可提示GSD IV。1 临床资料
患儿男,1岁10个月,因肝脾肿大6月余伴发热7天入院。患儿既往体健,母亲孕期健康,父母亲非近亲结婚,有一哥哥身体健康,否认有家族性遗传代谢病史及传染疾病史。入院体格检查:贫血面容,皮下脂肪薄,弹性差;咽红,呼吸急促,双肺呼吸音粗,可闻及痰鸣音;心音有力,律齐,未闻及杂音;腹部膨隆无压痛,肝肋下4 cm、质软,脾肋下7 cm、质韧;神经系统检查无异常。实验室检查:
血常规血红蛋白 62 g/ L,异性淋巴细胞占7%;大便常规潜血阳性;降钙素原2.64 ng/mL;血清谷草转氨酶 694.00 U/L,血清谷丙转氨酶 241.00 U/L;肌酸激酶同工酶38.00 U/L,肌酸激酶39.00 U/L;部分凝血活酶时间(APTT) 52.60 s,

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标签:糖原   突变   肝脏   基因   致病性   基因突变   患儿
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