一个患有神经纤维素瘤类型1的家庭中有两个不同的NF1致病变体
Tabea I Hartung1, Lan Kluwe2,3, Reinhard E Friedrich3
1Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; t.hartung@uke.de.
Cancer genomics & proteomics
|December 27, 2024
概括
在罕见的1型家族神经纤维素瘤 (NF1) 病例中,可能会出现新的NF1基因变异. 这一发现影响了对患有NF1.1的家庭的基因测试和咨询.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 临床遗传学 临床遗传学
背景情况:
- 神经纤维素瘤类型1 (NF1) 是一种常见的遗传疾病.
- 大多数家族性NF1病例涉及共享的NF1基因变异.
- 在NF1中,新发病原体变异很常见,但在家族病例中很少见.
研究的目的:
- 调查家族NF1.1中罕见出现的新发NF1基因变异的罕见情况.
- 分析NF1.1中对遗传检测和咨询的含义.
- 确定单一家族内多个NF1变异的概率.
主要方法:
- 在NF门诊诊所对患者的临床检查.
- 用于基因测试的NF1基因向测序.
- 简短的并排重复标记分析用于家庭成员的概况.
- 对出现多个de novo变体的概率计算.
主要成果:
- 在一个NF1家族 (母亲,父亲,两个儿子) 中确定了两种不同的致病性NF1基因变异.
- 父亲和一个儿子共享一个NF1变异;另一个儿子有不同的de novoNF1变异.
- 在未受影响的母亲身上没有任何一种变异;父亲身份得到证实.
- 在一个家族中存在两种不同的NF1变异的计算概率为 1:9,000,000.
结论:
- 在一个家族中出现两种不同的NF1变体是非常罕见的,但有可能发生.
- 这种现象需要在基因诊断和咨询中考虑NF1.
- 查整个NF1基因对于缺乏家族变异的后代的准确诊断至关重要.
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