基因变异的透率降低,导致肌缩性侧面硬化症
Andrew G L Douglas1,2,3, Diana Baralle4
1Oxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK andrew.douglas@ndcn.ox.ac.uk.
Journal of medical genetics
|December 20, 2023
概括
肌缩侧面硬化症 (ALS) 的遗传变异显示出人口透率降低. 这意味着并非所有患有致病基因变异的人都会患上ALS或前性痴呆症 (FTD),这会影响基因检测和咨询.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 流行病学 流行病学
背景情况:
- 肌缩侧面硬化症 (ALS) 和前性痴呆症 (FTD) 具有共同的遗传和病因联系.
- 在ALS中通常涉及的基因包括C9orf72,SOD1,TARDBP和FUS.
- 这些基因中疾病相关变异的不完全透是公认的,但在人口层面上没有得到很好的量化.
研究的目的:
- 确定经常与ALS相关的基因中的致病性和可能致病性变体的种群层面透率.
- 为关键ALS/FTD基因提供变异透率的种群层面理解.
主要方法:
- 利用ALS和FTD发表的流行病学数据来估计预期的变种频率.
- 采用gnomAD和ClinVar数据库来确定观察到的变体数量并计算种群透率.
- 从现有文献中提取了C9orf72数据.
主要成果:
- 估计ALS或FTD的最大人口透率:C9orf72 (33%),SOD1 (54%),TARDBP (38%) 和FUS (19%).
- 为每个基因的透度计算了置信区间 (CI).
- 在研究的基因中观察到透率的显著变化.
结论:
- 对ALS的与疾病相关的基因在人口水平上表现出减少的透率.
- 这些发现对于为ALS患者及其家人提供基因测试策略和咨询至关重要.
- 了解种群透率是准确基因风险评估的关键.
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