在一个年轻的队列中突然无法解释死亡的死后遗传分析:一个全外因组测序研究
Shouyu Wang1, Yongsheng Chen2, Jianghua Du1
1Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China.
International journal of legal medicine
|August 25, 2023
概括
在年轻人中,突然无法解释的死亡 (SUD) 通常是未被诊断的. 整体外因子测序发现了与肌肉病相关的新型基因,在中国队列中,诊断产量从51.9%增加到66.7%.
科学领域:
- 遗传学 遗传学 是一个
- 心脏病学 心脏病学
- 法医病理学 法医病理学
背景情况:
- 突然无法解释的死亡 (SUD) 是年轻人死亡的重要原因之一.
- 分子尸检,特别是有针对性的基因查,有助于SUD诊断,但许多病例仍未被诊断出来.
- 当前遗传策略的局限性需要探索SUD的新型易感基因.
研究的目的:
- 在一个年轻的中国队伍中,使用全外因子测序 (WES) 调查SUD的遗传基础.
- 识别超出目前已知的新型SUD易感基因.
- 为了提高SUD遗传检测的诊断产量.
主要方法:
- 整体外体测序 (WES) 在一组年轻人 (18-40岁) 上进行,这些人经历了SUD.
- 在255个已知的SUD相关基因和33个肌肉病相关候选基因的新型组中分析了已识别的变异.
- 对变体有害性 (CADD分数) 和多基因负担进行了对随机选择的基因进行比较分析.
主要成果:
- 在已建立的SUD相关基因中,在51.9%的病例中发现了21种致病性/可能致病性变异.
- 33个新型候选基因,主要与肌肉病相关,被确定为潜在的SUD易感基因.
- 结合这些新型基因,将整体遗传测试产量提高到66.7%.
结论:
- 新型肌肉病相关基因在研究的队列中对SUD病因有显著的贡献.
- 整体外基因组测序和新发现基因的纳入改善了SUD的诊断准确性.
- 这项研究扩大了对SUD遗传因素的理解,并完善了遗传查策略.
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