目的探讨电子转移黄素蛋白脱氢酶(electron transfer flavoprotein dehydrogenase,ETFDH)基因变异致晚发型戊二酸血症Ⅱ型(glutaric acidemia typeⅡ,GAⅡ)的临床表现及遗传学特点。方法回顾性分析2020年1月首都医科大学附属首都儿童医...目的探讨电子转移黄素蛋白脱氢酶(electron transfer flavoprotein dehydrogenase,ETFDH)基因变异致晚发型戊二酸血症Ⅱ型(glutaric acidemia typeⅡ,GAⅡ)的临床表现及遗传学特点。方法回顾性分析2020年1月首都医科大学附属首都儿童医学中心收治的1例晚发型GAⅡ患者的临床表现及遗传学检测结果,在PubMed、中国知网和万方数据库检索2019—2024年间发表的相关文献,关键词包括“glutaric acidemia typeⅡ”“ETFDH gene”及“戊二酸血症Ⅱ型”“ETFDH基因”,检索策略结合MeSH词汇及自由词进行筛选。总结临床表现。结果患儿男,4月龄,表现为竖头不稳,嗜睡8 d。生后母乳喂养,发育落后,家长体健,否认家族性遗传病及传染病史。患儿对治疗反应差,出现脏器功能障碍、呼吸衰竭。遗传学检测结果提示该患儿ETFDH基因(NM_004453.2)存在Ex.1-Ex.6del以及c.1531G>C(p.D511H)复合杂合变异。根据美国医学遗传学与基因组学学会(American college of medical genetics and genomics,ACMG)指南判断该患者变异位点为疑似致病性变异。文献回顾共检索到11篇文献,共25例18岁以内起病的患者,其中早发型患者6例,4例(66.7%)表现为低血糖或代谢性酸中毒;晚发型患者19例,加上本文报道病例共20例,其中13例(65.0%)表现为肌痛、运动耐力下降或恶心呕吐等症状,5例(25.0%)仅表现为代谢筛查异常,无明显临床表现。包括本例在内的14例中国患者中,共检测到16个ETFDH基因变异位点,c.250G>A为最常见的变异位点,本例患者c.1531G>C突变为首次报道。结论GAⅡ缺乏典型的临床表现,患儿出现不明原因发育迟滞、肌痛、运动障碍、恶心呕吐、代谢异常时,需考虑GAⅡ,遗传学检测可明确诊断。展开更多
The patient was a 17-year-old female who complained of episodic vomiting,exercise intolerance,and muscle weakness.Her symptoms started at 13 years and the initial symptom was vomiting after a meal.At the beginning,mus...The patient was a 17-year-old female who complained of episodic vomiting,exercise intolerance,and muscle weakness.Her symptoms started at 13 years and the initial symptom was vomiting after a meal.At the beginning,muscle fatigue and exercise intolerance after intense exercise only affected her lower limbs.The symptoms progressed slowly in the past 4 years.Her upper limbs,as well as neck muscles were involved now.The patient had no complaint about muscle stiffness,myalgia,or numbness.Physical examination indicated that she had no obviously muscle atrophy.The muscle strength was 4 to 5 (Medical Research Council Scale) in proximal lower limbs,4/5 in proximal upper limbs,and almost normal in distal limbs.Deep tendon reflexes were diminished and sensory examination was intact.No abnormality was evident in the serum blood,except for mild elevated creatinine kinase level (312 IU/L,normal 26-192 IU/L) and slightly increased lactate dehydrogenase level (112IU/L,normal 8-46IU/L).Echocardiography examinations showed the four cardiac chambers were normal in size and function.Muscle strength improved after treatment with riboflavin.展开更多
目的研究1例以转氨酶升高为主的多种酰基辅酶A脱氢酶缺乏症患者临床表现、实验室检查、肌肉活检及基因突变情况分析,并进行文献复习,为该病的早期诊断及治疗提供依据。方法收集1例7岁3月男性患儿的临床资料,采集患儿及父母血标本,采用...目的研究1例以转氨酶升高为主的多种酰基辅酶A脱氢酶缺乏症患者临床表现、实验室检查、肌肉活检及基因突变情况分析,并进行文献复习,为该病的早期诊断及治疗提供依据。方法收集1例7岁3月男性患儿的临床资料,采集患儿及父母血标本,采用二代基因测序检测致病基因,腓肠肌穿刺活检明确肌肉病变情况。结果患儿肌肉活检电镜结果示肌纤维内大量脂滴沉积。基因测序结果显示患儿的ETFDH基因存在c.1773_1774del AT p.(Cys592※)无义突变和c.389A>T p.(Asp130Val)错义突变,考虑为复合杂合突变,患儿父母分别为携带者。结论临床上有转氨酶升高为主伴有心肌酶升高、运动障碍者,应尽早进行分子遗传学检查,有条件者行腓肠肌肌肉活检术,可以为患儿家庭提供准确的遗传咨询和产前诊断。展开更多
文摘目的探讨电子转移黄素蛋白脱氢酶(electron transfer flavoprotein dehydrogenase,ETFDH)基因变异致晚发型戊二酸血症Ⅱ型(glutaric acidemia typeⅡ,GAⅡ)的临床表现及遗传学特点。方法回顾性分析2020年1月首都医科大学附属首都儿童医学中心收治的1例晚发型GAⅡ患者的临床表现及遗传学检测结果,在PubMed、中国知网和万方数据库检索2019—2024年间发表的相关文献,关键词包括“glutaric acidemia typeⅡ”“ETFDH gene”及“戊二酸血症Ⅱ型”“ETFDH基因”,检索策略结合MeSH词汇及自由词进行筛选。总结临床表现。结果患儿男,4月龄,表现为竖头不稳,嗜睡8 d。生后母乳喂养,发育落后,家长体健,否认家族性遗传病及传染病史。患儿对治疗反应差,出现脏器功能障碍、呼吸衰竭。遗传学检测结果提示该患儿ETFDH基因(NM_004453.2)存在Ex.1-Ex.6del以及c.1531G>C(p.D511H)复合杂合变异。根据美国医学遗传学与基因组学学会(American college of medical genetics and genomics,ACMG)指南判断该患者变异位点为疑似致病性变异。文献回顾共检索到11篇文献,共25例18岁以内起病的患者,其中早发型患者6例,4例(66.7%)表现为低血糖或代谢性酸中毒;晚发型患者19例,加上本文报道病例共20例,其中13例(65.0%)表现为肌痛、运动耐力下降或恶心呕吐等症状,5例(25.0%)仅表现为代谢筛查异常,无明显临床表现。包括本例在内的14例中国患者中,共检测到16个ETFDH基因变异位点,c.250G>A为最常见的变异位点,本例患者c.1531G>C突变为首次报道。结论GAⅡ缺乏典型的临床表现,患儿出现不明原因发育迟滞、肌痛、运动障碍、恶心呕吐、代谢异常时,需考虑GAⅡ,遗传学检测可明确诊断。
文摘The patient was a 17-year-old female who complained of episodic vomiting,exercise intolerance,and muscle weakness.Her symptoms started at 13 years and the initial symptom was vomiting after a meal.At the beginning,muscle fatigue and exercise intolerance after intense exercise only affected her lower limbs.The symptoms progressed slowly in the past 4 years.Her upper limbs,as well as neck muscles were involved now.The patient had no complaint about muscle stiffness,myalgia,or numbness.Physical examination indicated that she had no obviously muscle atrophy.The muscle strength was 4 to 5 (Medical Research Council Scale) in proximal lower limbs,4/5 in proximal upper limbs,and almost normal in distal limbs.Deep tendon reflexes were diminished and sensory examination was intact.No abnormality was evident in the serum blood,except for mild elevated creatinine kinase level (312 IU/L,normal 26-192 IU/L) and slightly increased lactate dehydrogenase level (112IU/L,normal 8-46IU/L).Echocardiography examinations showed the four cardiac chambers were normal in size and function.Muscle strength improved after treatment with riboflavin.
文摘目的研究1例以转氨酶升高为主的多种酰基辅酶A脱氢酶缺乏症患者临床表现、实验室检查、肌肉活检及基因突变情况分析,并进行文献复习,为该病的早期诊断及治疗提供依据。方法收集1例7岁3月男性患儿的临床资料,采集患儿及父母血标本,采用二代基因测序检测致病基因,腓肠肌穿刺活检明确肌肉病变情况。结果患儿肌肉活检电镜结果示肌纤维内大量脂滴沉积。基因测序结果显示患儿的ETFDH基因存在c.1773_1774del AT p.(Cys592※)无义突变和c.389A>T p.(Asp130Val)错义突变,考虑为复合杂合突变,患儿父母分别为携带者。结论临床上有转氨酶升高为主伴有心肌酶升高、运动障碍者,应尽早进行分子遗传学检查,有条件者行腓肠肌肌肉活检术,可以为患儿家庭提供准确的遗传咨询和产前诊断。
