在多重家族中发现的罕见变异与面腔裂:扩展表型是否有所不同?
Kimberly K Diaz Perez1, Sydney Chung1, S Taylor Head2
1Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA.
American journal of medical genetics. Part A
|June 23, 2023
概括
在带有口面裂 (OFCs) 的家族中,外体序列测定确定了罕见的遗传变异. 虽然亚临床表型假设没有得到证实,但罕见的变异有助于OFC病因学.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 出生缺陷的研究研究研究.
背景情况:
- 外体序列测序 (ES) 有效地识别了门德尔乱的变异.
- 复杂的病因和不清楚的遗传模式在一些家庭中挑战ES.
- 面腔裂 (OFCs) 呈现出门德尔和复杂遗传,具有广泛的表型.
研究的目的:
- 调查多个OFC家族中罕见遗传变异的作用.
- 为了测试包括亚临床表现型在内的假设,澄清了OFC遗传模式.
- 在具有复杂OFC病因的家族中识别因果变异.
主要方法:
- 对31个多重OFC家族进行了exome测序.
- 现型包括明显的裂和亚临床特征,如orbicularis oris肌肉不连续性 (OOM) 和velopharyngeal缺陷 (VPI).
- 分析的重点是识别罕见的,可能的因果性遗传变异.
主要成果:
- 在六个家族中确定了可能的因果变异,包括COL11A2,IRF6,SHROOM3,SMC3,TBX3和TP63.3等基因.
- 没有明确的证据支持包括亚临床现象型简化遗传模式的假设.
- 研究结果表明,罕见变异在OFCs的遗传基础中起着重要作用.
结论:
- 罕见的遗传变异有助于 orofacial 裂的病因.
- 需要进一步的研究才能充分理解OFCs复杂的遗传结构.
- 扩大表型定义仍然可以提供对遗传条件的见解.
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