在焦点中,已确立的基因中的新变异
Maša Kovačević1, Ognjen Milićević2, Marija Branković2
1Neurology Clinic, University Clinical Center of Serbia, Belgrade, Serbia; Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
针对5个基因的向测序在6.2%的焦点患者中发现了可能的致病变体,这些患者具有正常或轻度智力障碍. 这项研究突出了这一患者群体中的遗传贡献者.
科学领域:
- 遗传学 是一个遗传学.
- 神经学 神经学
- 分子生物学分子生物学
背景情况:
- 下一代测序 (NGS) 提高了对遗传病贡献者的理解.
- 以前的研究通常集中在智力障碍的儿童或成年人身上.
- 在正常或轻度智力障碍的个体中,对焦点的遗传结构的研究有限.
研究的目的:
- 确定针对五个已确定的基因 (DEPDC5,LGI1,SCN1A,GRIN2A,PCDH19) 的目标测序的诊断产量.
- 调查具有正常智力功能或轻度智力障碍的焦点患者.
- 识别新型变种并描述变种载体.
主要方法:
- 针对96名怀疑患有遗传焦点的患者进行了向面板测序.
- 全面的诊断性评估.
- 使用美国医学遗传学院和分子病理学协会标准对感兴趣的变体 (VOI) 的分类.
主要成果:
- 在8.3%的患者中发现了6种感兴趣的变异 (VOI) (8/96).
- 在6.2%的患者 (6/96) 中发现了四种可能的致病性VOI,包括DEPDC5,SCN1A和PCDH19变种.
- 在GRIN2A中发现了一种未知意义的变异 (VUS);在LGI1.1中没有发现变异.
结论:
- 针对5个基因的向测序在这个队列中实现了6.2%的诊断收益率.
- 发现了多种新型变异,强调了遗传异质性.
- 需要进一步的研究,以充分了解正常或轻度智力障碍患者常见综合征的遗传基础.
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