一个汉族中国家庭的复杂结核硬化症复合体中的ATSC2复发型变异c.5126C>T
Xinyue Deng1, Shan Wu2, Hao Deng3
1Xinyue Deng, Health Management Center, the Third Xiangya Hospital, Disease Genome Research Center, Center for Experimental Medicine, the Third Xiangya Hospital, Research Center of Medical Experimental Technology, the Third Xiangya Hospital, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China.
Pakistan journal of medical sciences
|January 27, 2025
概括
这项研究确定了一种致病性TSC2基因变异 (c.5126C>T) 在一个汉族中国家庭的结核性硬化综合体 (TSC). 这一发现扩大了对TSC遗传原因和诊断的理解.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 医学遗传学 医学遗传学
背景情况:
- 结核性硬化综合体 (TSC) 是一种影响多个器官的遗传性疾病.
- 遗传突变,特别是TSC1和TSC2基因,是TSC的主要原因.
- 准确的基因诊断对于了解疾病机制和患者管理至关重要.
研究的目的:
- 为了确定在汉族中华家庭中对TSC负责的特定遗传变异.
- 描述已识别的变体及其对蛋白质功能的潜在影响.
- 为更广泛地了解TSC病变产生做出贡献.
主要方法:
- 对一家汉族中国家庭的临床检查,怀疑TSC.
- 整个外基因组测序的探针和桑格测序的家族成员.
- 使用SWISS-MODEL和PyMOL进行变异致病性和蛋白质结构建模的生物信息分析.
- 根据ACMG标准对变异性致病性的分类.
主要成果:
- 在TSC2基因中,一种复发性致病变体c.5126C>T被确定为家族TSC的原因.
- 这种变体的结果是,在结核素的GTPase激活蛋白 (GAP) 域内,素替代了素 (p.P1709L).
- 鉴定的变异与TSC的临床表现一致,包括神经,皮肤和器官特异性异常.
结论:
- 一种致病性TSC2变种 (c.5126C>T,p.P1709L) 已被证实是汉语家族中TSC的原因.
- 这一发现扩大了与这种特定TSC2变异相关的已知的表型谱.
- 这项研究提高了TSC的遗传诊断能力,并加深了对其分子机制的理解.
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