一种无意义的CC2D1A变体与先天性异常,运动延迟,低血压和轻微形有关
Sheng Yi1,2, Xianglian Tang1,2, Qiang Zhang1,2
1Genetic and Metabolic Central Laboratory, Guangxi Birth Defects Research and Prevention Institute, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
自体逆性智力发育障碍-3,与CC2D1A基因相关,导致智力障碍和自闭症谱系障碍. 这项研究确定了一种新的患者变异,并扩大了已知的CC2D1A突变谱.
科学领域:
- 遗传学 是一个遗传学.
- 神经发育障碍 神经发育障碍
- 人类分子遗传学
背景情况:
- 自体逆性智力发育障碍-3是由CC2D1A基因的突变引起的,导致智力障碍 (ID) 和自闭症谱系障碍 (ASD).
- 在全球范围内,已经记录了来自17个家庭的39名患有CC2D1A相关疾病的患者,并确定了有限的致病变体.
- 在CC2D1A基因中,先前确定的变异包括六种功能丧失和三个意义不明的变异 (VUS).
研究的目的:
- 在来自非血缘关系的中国家庭的严重ID患者中识别致病基因.
- 扩大对CC2D1A相关疾病的遗传和临床谱的理解.
- 加强表型-基因型相关性,以改善遗传检测和咨询.
主要方法:
- 整体外体测序 (WES) 用于确定受影响患者的遗传原因.
- 对内部数据库进行了回顾性审查,以确定额外的CC2D1A变体.
- 分析了患者和家庭病史的临床数据.
主要成果:
- 患者出现了严重的ID,ASD,语言障碍,运动延迟,低血压,面部异常和手指形.
- 在CC2D1A基因中,WES发现了一个同卵性无意义变异 (c.736C>T;p.Gln246Ter).
- 通过数据库审查,通过数据库审查确定了六种新型,可能致病的CC2D1A变体.
结论:
- 这项研究扩大了已知的CC2D1A相关疾病的遗传和临床谱.
- 这些发现有助于更好地了解临床异质性和基因型-表型相关性.
- 这些见解促进了对受影响家庭的提高意识和准确的遗传咨询.
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