人类遗传背景如何影响病原性分类:FGFR1变异在异常性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性
Wanxue Xu1, Lacey Plummer1, Stephanie B Seminara1
1Reproductive Endocrine Unit of the Department of Medicine, Harvard Reproductive Endocrine Sciences Center, Massachusetts General Hospital, Boston, MA, 02114, USA.
Human genetics
|October 7, 2023
概括
区域遗传丰富有助于对FGFR1中未知的遗传变异进行分类,改善了对Idiopathic Hypogonadotropic Hypogonadism (IHH) 的诊断. 这种方法重新分类变异,将它们与IHH相关的表型联系起来,并增强精确医学.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 临床医学 临床医学
背景情况:
- 精准医学依赖于精确的遗传变异解释.
- 与疾病相关的基因中未知意义的变异 (VUS) 构成了挑战.
- FGFR1变异是一种常见的Idiopathic Hypogonadotropic Hypogonadism (IHH) 的原因.
研究的目的:
- 调查FGFR1.1.中的误解变异的区域遗传丰富.
- 使用美国医学遗传学院/分子病理学协会 (ACMG/AMP) 框架改进变异分类.
- 为了将FGFR1变体分类与IHH相关的表型相关联.
主要方法:
- 在175个IHH试验中分析了143种罕见序列变异 (RSV).
- 在FGFR1域 (D1,D2,D3,TK) 中定义的区域遗传丰富.
- 应用了ACMG/AMP标准,加上区域丰富,以对VUS进行分类.
主要成果:
- 在特定的功能领域确定了FGFR1误解RSV的区域丰富.
- 通过整合区域丰富,将FGFR1误解VUS的37%重新归类为致病性或可能致病性 (PLP).
- 重新分类的变体与IHH表型的相关性更高 (例如,厌氧症,延迟青春期).
结论:
- 区域遗传丰富的整合改善了FGFR1.1的VUS分类.
- 增强的变体分类与IHH的表型表现性相关.
- 区域丰富可以成为ACMG/AMP临床变异解释指南的宝贵补充.
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