一种新型的同卵性CA5A基因缺失在碳酸盐无水酶VA缺陷中呈现为发育延迟而没有代谢危机
Maryam F Bin Hadyan1, Mohammed A Saleh1, Saad Aldalaqan2
1Department of Clinical and Metabolic Genetics, Pediatric Hospital, King Fahad Medical City, Riyadh, Saudi Arabia.
碳酸无水酶VA缺乏,通常呈现为高氨血症,在罕见的情况下可以表现为发育迟缓而没有代谢危机. 在基因分析中,在受影响的儿童中发现了一种新的CA5A基因缺失.
科学领域:
- 遗传学 是一个遗传学.
- 生物化学 生物化学
- 神经学 神经学
背景情况:
- 碳酸无水酶VA (CA-VA) 缺乏症是一种罕见的自体相衰退性疾病.
- 它是由CA5A基因中的双基突变引起的.
- 患者通常呈现急性代谢失补偿,包括婴儿期的高氨血.
研究的目的:
- 报告三个孩子在CA5A基因中出现了新型的同卵性缺失.
- 描述CA-VA缺乏的非典型表现,主要表现为发育迟缓而没有高氨血.
主要方法:
- 进行了临床,生化和神经成像分析.
- 使用了整体外体测序 (WES) 和全基因组测序 (WGS).
- 家庭隔离分析证实了遗传发现.
主要成果:
- 在三个受影响的儿童中,在CA5A基因中发现了一种新型的同卵性16.5kb删除 (3-7外因子).
- 患者呈现全球发育迟缓,言语迟缓,小头症和智力障碍,但没有超血症.
- 父母和健康的兄弟姐妹是删除的异合体载体.
结论:
- CA-VA 缺乏症可能会出现神经发育延迟,而不会发生代谢失补偿.
- 基因分析对于识别具有新突变的非典型病例至关重要.
- 识别这种非典型表现对于疾病意识至关重要.
更多相关视频
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
03:45Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
相关概念视频
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
Disorders of Acid-Base Balance
Respiratory Acidosis and Alkalosis
Respiratory acidosis occurs due to an increase in the partial pressure of carbon dioxide PCO2 in the blood. It often arises from shallow breathing or impaired gas exchange caused by...
Inborn Errors of Metabolism
Animal Mitochondrial Genetics
Pulmonary Hypertension: Classification and Pathogenesis
There are various classifications for PH, each relating to different underlying causes and also...
Cystic Fibrosis: Management
Sinus disease and chronic...
