瑞典队列的整体外体序列测序和多基因评估,该队列患有严重的发育语言障碍
Ashraf Yahia1,2, Danyang Li1,2,3, Sanna Lejerkrans1,2
1Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet, Region Stockholm, Stockholm, Sweden.
Human genetics
|February 1, 2024
概括
整体外基因组测序 (WES) 在7.5%的严重发育性语言障碍 (DLD) 个体中发现了显著的遗传变异. 这支持WES作为用于识别单一性DLD形式的首要遗传测试.
科学领域:
- 遗传学 遗传学 是一个
- 神经发育障碍 神经发育障碍
- 儿科疾病 儿科疾病
背景情况:
- 发育性语言障碍 (DLD) 与其他神经发育障碍 (NDD) 有共同的遗传和病理联系,这表明存在连续性.
- 之前在严重的DLD试验者中进行的微阵列基因型鉴定产生了6.8%的诊断率.
- 对DLD遗传基础的全面了解仍然不完整.
研究的目的:
- 使用整体外体序列测序 (WES) 调查严重DLD的遗传谱.
- 探索多基因风险评分 (PRS) 在神经发育困难的家族聚合中的作用.
- 在DLD试验中评估语言测试结果与语言相关的PRS之间的关联.
主要方法:
- 整个外体序列测序 (WES) 在53名患有严重DLD的试验者身上进行.
- 多基因风险评分 (PRS) 计算用于分析家族神经发育困难和语言关联.
- 确定变异的临床意义被评估.
主要成果:
- 整体外基因组测序 (WES) 在53个试验物中的4个中发现了临床上显著的变异 (7.5%的诊断收益率).
- 在PAK2,MED13,PLCB4和TNRC6B基因中发现了已识别的变异.
- 多基因风险评分 (PRS) 没有解释神经发育困难在家庭中的聚合,也没有显示与语言测试成绩的显著关联.
结论:
- 整体外基因组测序 (WES) 作为一级遗传测试,有效用于识别DLD的单源原因.
- 需要进一步进行大规模测序研究,以发现新型基因并阐明多基因对DLD的贡献.
- NDD连续概念得到了在DLD中观察到的遗传重叠的支持.
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