来自印度的神经发育队列中的智力障碍的单基性综合征的De novo变异
Shruti Pande1, Purvi Majethia1, Karthik Nair1
1Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India.
European journal of human genetics : EJHG
|December 19, 2023
概括
新变种导致智力障碍 (ID),但在印度遗传原因是未知的. 单元外基因组测序在55个个体中发现了46种疾病,其中74%是新型变异,突出了其在资源有限的环境中的诊断价值.
科学领域:
- 遗传学 是一个遗传学.
- 神经发育障碍 神经发育障碍
- 基因组医学是基因组医学.
背景情况:
- 在发达国家,新的变种已成为智力障碍 (ID) 的确立原因.
- 印度等低收入和中等收入国家ID的遗传基础和诊断策略在很大程度上仍未被探索.
研究的目的:
- 在印度队列中描述由罕见的de novo变异引起的综合性ID的临床和基因型谱.
- 评估单元外基因组测序在资源有限的环境中诊断这些疾病的有效性.
主要方法:
- 在54个患有综合征性ID的家庭中的55个个体上进行了整体外基因组测序.
- 分析了临床数据和遗传变异,以确定致病性新型变异和相关疾病.
主要成果:
- 确定了46种影响46个基因的46种不同的疾病,包括51种单核酸变异/indels和两个副本数变异.
- 在印度人群中新报告了24种单一性疾病,其中53种中39种 (74%) 的致病变体是新鲜的.
- 变种涉及编码转录调节器,激酶,酶,运动蛋白和突触/神经元迁移蛋白的基因.
结论:
- 单元外体序列测序是一种有效的诊断工具,用于综合征性ID在资源有限的设置.
- 这项研究扩大了印度ID已知的遗传景观,识别了新的变体和疾病.
- 了解不同人群中ID的遗传结构对于改善诊断产量和遗传咨询至关重要.
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