通过基因组测序在怀疑罕见疾病的个体中确定多个分子诊断
Alka Malhotra1, Erin Thorpe2, Alison J Coffey1
1Illumina Inc., San Diego, CA, USA.
HGG advances
|April 8, 2025
概括
基因组测序在9%的个体中确定了多重分子诊断 (MMD). 这些MMD,包括可采取行动的二次发现,可能会被其他遗传测试遗漏.
科学领域:
- 基因组学就是基因组学.
- 临床遗传学 临床遗传学
- 分子诊断学 分子诊断学
背景情况:
- 基因组测序提供了全面的变体检测.
- 多重分子诊断 (MMDs) 可以发生在一个人身上.
- 识别MMD对于准确的诊断和治疗至关重要.
研究的目的:
- 评估通过临床基因组测序识别的MMD的频率和影响.
- 为了确定MMD与检测 (IFT) 的初级指示,二次或偶然发现相关的MMD的比例.
- 评估MMD患者中二次或偶然发现的临床意义和可行性.
主要方法:
- 对1846名接受临床基因组测序的人进行了回顾性分析.
- 被归类为可能致病或致病的变种.
- MMDs定义为与IFT相关的至少一个发现,所有变异都是致病性的.
主要成果:
- 47.2%的人至少有一种与IFT相关的致病/可能致病变体.
- 9.3%的人 (81/872) 有多个临床显著的分子发现.
- 3.7%的人至少有两个与IFT相关的MMD;5.6%的人有次要/偶然的发现.
- 大约60%的MMD患者有可采取行动的二次/偶然发现.
结论:
- 基因组测序在9%的具有致病性/可能致病性发现的个体中确定了MMD.
- 其他遗传检测方法可能会忽略MMD,包括可采取行动的二次发现.
- 全面的基因组分析对于揭示复杂的遗传特征和指导患者护理至关重要.
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