在多样化的人口中,外体序列测序的遗传祖先和诊断产量
Yusuph Mavura1,2, Nuriye Sahin-Hodoglugil3, Ugur Hodoglugil3
1Institute for Human Genetics, University of California San Francisco, San Francisco, CA, USA. Yusuph.Mavura@ucsf.edu.
NPJ genomic medicine
|January 3, 2024
概括
外体测序 (ES) 诊断产量在不同的祖先中是公平的. 遗传血统没有影响儿科和产前患者诊断遗传疾病的可能性.
科学领域:
- 基因组学就是基因组学.
- 临床遗传学 临床遗传学
- 人口遗传学 人口遗传学
背景情况:
- 外体序列测序 (ES) 是诊断遗传疾病的强大工具.
- 有关基于患者血统的诊断产量 (DY) 潜在差异存在担忧.
- 之前的研究表明,非欧洲人口的ES DY较低.
研究的目的:
- 在多样化的儿科和产前队列中调查遗传祖先和ES诊断产量的关联.
- 为了确定非欧洲祖先是否与临床外基因组测序中的诊断成功降低有关.
- 支持在所有祖先群体中公平地应用外基因组测序.
主要方法:
- 分析了845例儿科和产前病例,这些病例在怀疑遗传疾病时接受了外体序列测序.
- 从外基因组测序数据估计大陆/次大陆遗传祖先比例.
- 使用科尔莫戈罗夫-斯米尔诺夫测试和科克兰-阿米塔奇趋势测试,对阳性,阴性和不确定的诊断结果中的祖先分布进行统计比较.
主要成果:
- 在任何评估的遗传祖先群体 (非洲人,美洲原住民,东亚人,欧洲人,中东人,南亚人) 中没有观察到总体外体序列测序诊断产量的显著减少.
- 在中东和南亚祖先的个体中,发现了更高比例的自体逆向同卵性遗传,这归因于血缘关系.
- 遗传血统与获得正确诊断的概率没有相关性.
结论:
- 外基因组测序表明,在各种祖先种群中,对于未被诊断的遗传条件,具有公平的诊断产量.
- 这些发现支持在诊断孟德尔疾病时一致和公平地使用外基因组测序,而不论患者的血统.
- 了解祖先特定的遗传模式,如某些群体中增加的血缘关系,可以完善遗传诊断.
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