使用全基因组测序对听力损失的系统遗传评估可以识别病原变异
Jung Ah Kim1,2, Seung Hyun Jang1,2, Sun Yung Joo1,2
1Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea.
Experimental & molecular medicine
|March 31, 2025
概括
全基因组测序 (WGS) 提供了一种全面的诊断遗传性听力损失的方法,识别了因果变异,而不是全外基因组测序 (WES). 这种先进的方法提高了感觉神经疾病的诊断产量.
科学领域:
- 遗传学 是一个遗传学.
- 基因组学就是基因组学.
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
背景情况:
- 遗传性听力损失是一种复杂的感觉神经系统疾病,每1000名新生儿中约有1名会患上这种疾病.
- 整体外体测序 (WES) 广泛用于分子诊断,但其覆盖范围有限.
- 有相当数量的遗传性听力损失病例仍未通过当前的WES方法进行诊断.
研究的目的:
- 评估全基因组测序 (WGS) 在识别听力损失的遗传原因方面的实用性.
- 通过使用WGS来克服WES的诊断局限性.
- 为了证明WGS在听力损失中进行综合遗传分析的优势.
主要方法:
- 全基因组测序 (WGS) 在140个有听力损失的家庭中进行.
- 实施了一种系统的工作流程,以检测各种类型的遗传变异,包括编码,拼接,线粒体,副本数,cis-regulatory和可转移元素变异.
- 分析的重点是确定导致神经感官听力损失的致病变异.
主要成果:
- 在140个家庭中的37个家庭中 (26%的诊断收益率) 确定了因果性遗传变异.
- WGS成功地确定了WES无法检测的变异,例如EYA1和CDH23中的异常拼接,线粒体变异 (MT-RNR1,MT-CO1),结构变异 (STRC) 和Alu插入 (SLC17A8).
- 这项研究强调了WGS在检测更广泛的基因变异频谱方面的卓越能力.
结论:
- 与WES相比,全基因组测序 (WGS) 显著提高了遗传性听力损失的诊断能力.
- 遗传基因系统 (WGS) 能够精确识别各种遗传变异,包括非编码和监管区域的遗传变异.
- 随着WGS成本的下降,预计其采用将增加,从而为听力损失患者提供更准确的遗传诊断.
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