外基因组测序和新基因的识别和共享机制在Polymicrogyria中
Shyam K Akula1,2,3, Allen Y Chen1,4, Jennifer E Neil1,2
1Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, and Allen Discovery Center for Human Brain Evolution, Boston, Massachusetts.
JAMA neurology
|July 24, 2023
概括
基因测序确定了32.7%的多微症病例的原因,揭示了新的基因关联,并强调了外基因测序对于诊断这种常见的大脑形的重要性.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
背景情况:
- 多微症是一种常见的皮层形,与神经发育问题 (如和认知缺陷) 有关.
- 它经常与其他大脑异常或综合症状况同时发生.
- 以前的研究已经确定了一些遗传和非遗传原因,但许多病例仍然无法解释.
研究的目的:
- 在一大群患者中调查多微症的生殖系遗传原因.
- 为了确定新型基因协会的多微型.
主要方法:
- 一项回顾性遗传关联研究分析了来自275个患有多微症的家庭的DNA样本.
- 面板和全外因子测序在探针和可用的家族成员上进行.
- 数据跨越了20年 (1994-2020年).
主要成果:
- 在32.7% (90/275) 的家庭中发现了解释多微症的分子诊断.
- 经常涉及的已知基因包括PIK3R2,TUBB2B,COL4A1和SCN3A.
- 发现了6个新的候选基因 (PANX1,QRICH1,SCN2A,TMEM161B,KIF26A,MAN2C1),它们具有一致的基因型-表型相关性.
结论:
- 这项研究发现,多微症的遗传原因比以前认可的更高.
- 管道病变似乎是一个重要的遗传原因.
- 外体序列测序是诊断受影响家庭中的多微型病的一个有价值的工具.
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