小说副本数变化和婴儿发作综合征的表型
Miaomiao Cheng1, Ling Bai2, Ying Yang1
1Department of Pediatrics, Peking University First Hospital, Beijing, China.
Clinical genetics
|March 28, 2024
概括
副本数变异 (CNVs) 是婴儿发作综合征 (IESS) 的主要原因之一. 这项研究在中国IESS患者中发现了新的CNV,其中1p36删除和15q重复是最常见的. 对于IESS诊断,建议进行CNV测试.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 儿科 儿科 儿科
背景情况:
- 婴儿发作综合征 (IESS) 是一种早期发作的严重.
- IESS的遗传基础是复杂的,副本数变异 (CNV) 越来越被认为是一个重要的病因.
- 了解不同人群中CNV和相关表型的谱系对于诊断和管理至关重要.
研究的目的:
- 在中国的一组患有婴儿发作综合征 (IESS) 的患者中,描述复制数变异 (CNV) 的谱.
- 将已识别的CNV与临床表型相关联,包括发作特征,发育结果和异形特征.
- 评估IESS中CNV检测的诊断产量,并确定常见的遗传原因.
主要方法:
- 对74名被诊断患有IESS的儿童进行了基因组副本数变异测序.
- 分析了CNV和相关的临床数据,包括发作,类型,发育状态和额外的异常.
- 确定了新的CNV和反复发生的基因改变,并与现有的数据库进行了比较.
主要成果:
- 在74名IESS儿童中发现了35种类型的CNV,其中11种是删除的,5种是IESS中以前未报告的重复的.
- 最常见的CNV是1p36删除 (16.2%) 和15q11-q13重复 (20.3%).
- 74%的CNV都是新的. 临床特征包括发育延迟 (100%),发作,焦点发作,面异常和小头症.
结论:
- 副本数变异是婴儿发作综合征 (IESS) 的突出遗传原因.
- 在这个队列中,1p36删除和15q11-q13重复是与IESS相关的最常见的CNV.
- 基因组CNV分析对于诊断IESS至关重要,特别是在出现发育迟缓,面异常和小头症的儿童中.
更多相关视频
相关概念视频
Comparing Copy Number Variations and SNPs
17.7K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.7K
Seizures: Classification
340
Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
340
Single Nucleotide Polymorphisms-SNPs
15.0K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
15.0K
Arteries of the Lower Limbs
188
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
188
Pleiotropy
40.4K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.4K


