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一例结节性硬化症 TSC2基因的新发变异分析

Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics(2021)

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Abstract
目的:对1例结节性硬化症患者进行基因变异分析,明确其可能的致病原因。方法:收集患者及父母的外周血,提取基因组DNA,应用高通量测序对患者的致病基因进行筛查,再通过Sanger测序对患者及其父母进行验证。结果:高通量测序提示患者TSC2基因存在可疑致病变异,经Sanger测序验证,患者TSC2基因第11外显子存在c.1053delG(p.Glu352SerfsX10)杂合变异,其父母及100名无关正常对照未检测出该位点变异,根据美国医学遗传学与基因组学学会遗传变异分类标准与指南,c.1053delG变异判定为致病性变异(PVS1+PS2+PM2)。结论:TSC2基因第11外显子c.1053delG(p.Glu352SerfsX10)移码变异可能是导致患者发病的原因。
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Key words
Tuberous sclerosis complex,Next generation sequencing,TSC2 gene,Gene variant
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