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评估一线基因检测策略,用于先天性心脏缺陷的住院患者
Al Lindstrom1, Amy Breman1, Sara Fitzgerald-Butt1
1Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Journal of genetic counseling
|June 24, 2025
概括
对先天性心脏缺陷 (CHD) 的基因检测需要改进. 基因组测序为心血管疾病提供了最高的诊断产量,超过单独或组合的基因组和染色体微阵列.
科学领域:
- 医学遗传学 医学遗传学
- 儿童心脏病学 儿童心脏病学
- 基因组医学是基因组医学.
背景情况:
- 目前对先天性心脏缺陷 (CHD) 的基因测试策略缺乏标准化,可能导致错过诊断.
- 有限的研究存在,将基因面板的诊断实用性与更全面的冠心病遗传评估方法进行比较.
研究的目的:
- 研究和比较各种遗传测试策略在患有心脏病的患者队列中的诊断产量.
- 评估是否临床表现可以指导选择最佳的遗传检测策略CHDs.
- 评估虚拟基因组,染色体微阵列 (CMA),它们的组合和全基因组测序的有效性.
主要方法:
- 描述性研究分析了263名基因诊断为心血管疾病的患者的真实世界队列.
- 对虚拟基因组的诊断产量的反事实分析.
- 虚拟基因组,CMA,CMA+基因组和全基因组测序之间的诊断产量在不同的临床表现中进行比较.
主要成果:
- 一个虚拟基因组单独确定了51.3%的遗传疾病,留下25.9%未被检测出来,22.8%需要进一步表征.
- 将虚拟基因面板与CMA结合起来,与单独使用这两种方法 (51.3%和63.1%) 相比,诊断产量显著增加 (87.8%).
- 全基因组测序在所有临床表现中显示出最高的诊断收益率 (99.6%),优于其他策略.
结论:
- 单独或联合使用CHD基因板和CMA是次优的第一线策略,缺少显著比例的遗传疾病.
- 基因面板和CMA的组合改善了诊断产量,特别是在心脏外异常或综合征特征的患者中.
- 对于患有心血管疾病的患者,应考虑标准化全基因组测序,因为它在各种表型和遗传病因方面具有全面的诊断能力.
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