在俄罗斯队列中PTPN11的突变谱
Anna Orlova1, Daria Guseva2, Nina Demina2
1SRC «Genome», Research Centre for Medical Genetics, 115522 Moscow, Russia.
Genes
|March 28, 2024
概括
诺南综合征是一种遗传性疾病,通常是由PTPN11基因突变引起的. 这项研究在俄罗斯患者中发现了频繁的PTPN11变体和常见的努南综合征特征,如面部异形和心脏异常.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 临床医学 临床医学
背景情况:
- 努南综合征包括16种不同的遗传疾病.
- 在PTPN11基因的突变是约50%的诺南综合征病例 (诺南综合征,多个lentigines的诺南综合征) 的原因.
研究的目的:
- 在456个无关联个体的队列中确定诺南综合征的遗传原因.
- 描述俄罗斯患者中常见的PTPN11基因变异,并将其与其他人群进行比较.
- 分析Noonan综合征在研究队列中的临床表现.
主要方法:
- 使用基因组进行了下一代测序 (NGS),对456个无关的试验对象进行了测序.
- 基因变异被识别和分类.
- 分析了发现突变的患者的临床特征.
主要成果:
- 在456例病例中,在206例病例中确定了遗传原因.
- PTPN11基因变异约占确定遗传原因的50% (107例).
- 发现了三种新型PTPN11变异,其中两种被归类为可能致病性 (LP).
- 在俄罗斯患者中发现特定的PTPN11变异 (c.922A>G,c.417G>C,c.1403C>T) 是常见的,占PTPN11突变病例的38%以上.
- 面部形和心血管异常是最常见的临床特征.
- 与之前的研究相比,观察到增长延迟的发生率较低.
结论:
- PTPN11基因是诺南综合征的主要原因之一,在俄罗斯人口中观察到明显的频繁变异.
- 对跨种群PTPN11变异的比较分析对于理解基因型-表型相关性至关重要.
- 面部形和心血管缺陷是努南综合征的关键临床指标,而生长延迟可能比以前报告的更少.
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