在患有发育迟缓和行为差异的患者中识别了新型BCL11A变异
Jian Zha1, Yong Chen1, Fangfang Cao1
1Department of Neurology, Jiangxi Provincial Children's Hospital, Nanchang, People's Republic of China.
概括
一个新的BCL11A基因变异在一个发育迟缓的孩子中被发现. 这一发现扩大了智力障碍综合征 (IDS) 和相关的行为差异的已知遗传原因.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 神经发育障碍 神经发育障碍
背景情况:
- BCL11A基因编码了一种转录抑制剂,对胎儿血红蛋白调节至关重要,并在造血和脑组织中表达.
- 在BCL11A中出现的新变异与智力障碍综合征 (IDS) 有关,其特点是发育迟缓,自闭症谱系障碍 (ASD) 和言语/语言迟缓.
- 全球报告的数量有限,需要对BCL11A基因变异及其相关表型进行进一步调查.
研究的目的:
- 确定儿童患者发育迟缓和行为差异的遗传原因.
- 扩大对BCL11A基因在神经发育障碍中的作用的理解.
主要方法:
- 整体外体测序 (WES) 用于检测致病性遗传变异.
- 在BCL11A基因中确定了一个候选变体,并随后使用桑格测序验证.
主要成果:
- 在BCL11A基因的第4个异构体中发现了一个新异构体变体 (c.1442delA,p.Glu481Glyfs*25).
- 这种变异导致截断的BCL11A蛋白质,与患者显著的语言延迟和行为差异一致.
- 通过桑格测序证实了已识别的变种.
结论:
- 已识别的BCL11A变体导致发育延迟和行为差异.
- 这一案例扩大了与BCL11A基因变异相关的已知遗传谱.
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