[对中国血统中的表型和病原性变异的分析,该血统患有多发性鼻综合征1型]
Wenyuan Zhang1, Lu Mao, Jinhui Zhang
1Department of Otology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China. fccchenb@zzu.edu.cn.
概括
在一个中国家庭中,NOG基因的遗传缺失导致了多重同位症综合征1型 (SYNS1). 这一发现凸显了拷贝数变异分析在标准测序失败时诊断SYNS1的重要性.
科学领域:
- 遗传学 是一个遗传学.
- 医学遗传学 医学遗传学
- 人类遗传学 人类遗传学
背景情况:
- 多重同位症综合征1型 (SYNS1) 是一种罕见的遗传疾病.
- 基因突变,特别是NOG基因,与SYNS1.1有关.
- 了解遗传基础对于诊断和管理至关重要.
研究的目的:
- 为了研究SYNS1在中国家庭中的临床和遗传基础.
- 在研究的血统中确定负责SYNS1的特定遗传变异.
- 扩大与SYNS1.1相关的NOG基因突变的已知光谱.
主要方法:
- 临床数据收集来自14名成员,三代中国血统的临床数据收集.
- 全外体序列 (WES) 和全基因组序列 (WGS) 在试验对象和父母DNA上.
- 复制数变异 (CNV) 分析以检测NOG基因中的删除或重复.
主要成果:
- 六个家庭成员呈现出听力损失,近端交叉等与SYNS1相关的特征.
- 在NOG基因中,WES没有识别出致病性单核酸变体或InDels.
- 在WGS和CNV分析中,NOG基因 (17q22) 中发现了一种致病性异构缺失,证实了SYNS1的诊断.
结论:
- 在NOG基因中发生的异构缺失是这种中国血统中SYNS1的可能原因.
- 这一发现扩大了SYNS1.1中NOG基因已知的突变格局.
- 当传统测序方法产生负结果时,CNV分析对于诊断SYNS1至关重要.
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