通过转录组广泛的关联研究扩大面异常的遗传景观
Elly Brokamp1, Alexandra Scalici1, Tyne Miller-Fleming1
1Vanderbilt University Medical Center.
Research square
|November 24, 2025
概括
面异常的遗传研究揭示了罕见的门德尔条件之外的新基因关联. 这项研究突出了与先天性异常的更广泛的遗传联系,提高了诊断潜力.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 医疗信息学 医疗信息学
背景情况:
- 面异常是常见的先天性疾病,具有显著的死亡率和发病率.
- 目前对孟德尔病因的基因测试具有较低的诊断收益率 (~25%).
- 寡基因和多基因遗传可能解释了低诊断率.
研究的目的:
- 使用大型电子健康记录系统识别与面异常的遗传关联.
- 调查与已知面异常基因的遗传关联的模式.
- 探索基因表达在面异常发展中的作用.
主要方法:
- 在两个大型队列 (BioVU和eMERGE) 中进行了全转录组关联研究 (TWAS).
- 评估了基因预测基因表达和面异常之间的关联.
- 利用了391个先前识别的面异常相关基因列表.
主要成果:
- 在已知基因的3.1% (BioVU) 和4.6% (eMERGE) 中发现了预测基因表达和面异常之间的显著关联.
- 确定了53种与面异常相关的新基因.
- 观察到已知的面基因经常与其他先天性异常 (心脏,神经系统,泌尿系统) 相联系.
结论:
- 支持孟德尔病相关基因的罕见和常见遗传变异对面异常的贡献.
- 表明这些基因在各种先天性异常的发展中起着广泛的作用.
- 通过考虑更广泛的遗传架构,突出了改进遗传诊断的潜力.
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