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了解基因疾病关系如何影响临床实用性:遗传性癌症测试中的适应和挑战
Jennifer Herrera-Mullar1, Carolyn Horton2, Amybeth Weaver2
1Ambry Genetics, 1 Enterprise, Aliso Viejo, CA, 92656, USA. jherreramullar@ambrygen.com.
Genome medicine
|July 2, 2025
概括
基因疾病有效性得分影响遗传性癌症倾向面板测试结果. 有限证据的基因提供了最小的长期临床效用,并增加了不确定的意义率的变异性.
科学领域:
- 遗传学 是一个遗传学.
- 临床诊断 临床诊断 临床诊断
- 生物信息学是一种生物信息学.
背景情况:
- 准确的基因疾病关系 (GDR) 对遗传性癌症倾向 (HCP) 多基因面板测试 (MGPT) 变异分类至关重要.
- 鉴定HCP的GDR是复杂的,原因是疾病流行率,不完整的透率和异质性等因素.
- 基因疾病有效性 (GDV) 评分对变异分类及其在HCP-MGPT的纵向变化的影响仍然未得到充分研究.
研究的目的:
- 评估HCP基因的基因疾病有效性 (GDV) 评分如何影响变异分类.
- 为了跟踪GDV得分和分类在7年期间的变化.
- 评估GDV得分对HCP-MGPT中阳性结果和不确定的意义变异 (VUS) 的频率的影响.
主要方法:
- 利用基于证据的GDV框架将基因分类到面板中.
- 在7年内对HCP-MGPT的GDV得分和分类的精心策划的变化.
- 分析了GDV得分与阳性结果和VUS的频率之间的相关性.
主要成果:
- 在具有明确证据 (31.5%) 的基因中,积极结果最常见,在有限证据基因中缺席 (0%).
- 很大一部分具有强度和中度GDR的基因被降级,其中23.5%经历了临床显著的降级.
- 包括有限证据基因增加了VUS频率13.7个百分点,这些基因随着时间的推移没有观察到这些基因的升级.
结论:
- GDV类别显著影响阳性和VUS结果频率;有限的证据基因提供最小的诊断产量.
- 在HCP-MGPT小组中包含的有限证据基因在长期临床实用性方面很少,没有观察到任何升级.
- 医疗人员对GDV的强有力的评估必须考虑疾病的透率和人口患病率,平衡全面的基因菜单与临床实用性,以防止误诊.
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