在两个患有全球发育迟缓和自闭症的中国患者中发现了新的KDM3B变异
Fangfang Cao1, Ling Xiong1, Huaping Wu1
1Department of Neurology, Jiangxi Provincial Children's Hospital, Nanchang, China.
概括
基因KDM3B的突变与发育障碍有关. 这项研究在患有全球发育迟缓和自闭症特征的患者中发现了新的KDM3B变异,扩大了已知的KDM3B相关疾病谱.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
背景情况:
- 哈普洛因不足KDM3B与发育迟缓,智力障碍,自闭症谱系障碍 (ASD) 和免疫缺陷 (DIJOS综合征) 相关.
- 与KDM3B相关的疾病的全表型谱和基因型-表型相关性需要进一步研究.
研究的目的:
- 在两个无关患者中调查全球发育迟缓和自闭症特征的遗传基础.
- 扩大对KDM3B基因在神经发育和相关疾病中的作用的理解.
主要方法:
- 两个患者的详细临床评估,包括神经成像,电生理学和神经发育评估.
- 整体外基因组测序 (WES) 识别遗传变异,随后进行桑格测序以确认.
- 根据ACMG指南的不同解释.
主要成果:
- 在患者1的KDM3B中确定了一种新的致病无意义变体 (p.Ser657*),该变体呈现出严重的发育迟缓,聋和自闭症特征.
- 在患者2中确定了KDM3B的可能致病性拼接部位变异,呈现出较轻微的发育迟缓和自闭症行为与正常听力.
- 在KDM3B相关疾病中表现出表型异质性,变体类型和位置可能会影响疾病严重程度.
结论:
- 这些发现扩大了KDM3B相关疾病的突变和表型谱.
- 在神经发育,认知和视神经形成中,KDM3B起着至关重要的作用.
- 需要进一步研究以阐明KDM3B相关疾病中观察到的临床异质性背后的分子机制.
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