在遗传神经发育条件下改进变异重新分类
Michelle Kowanda1,2, Rebecca Sheedy Smith3, Jamie Lundy1
1Geisinger Autism & Developmental Medicine Institute, Lewisburg, PA.
Genetics in medicine open
|December 13, 2024
概括
对神经发育障碍的基因变异重新解释,特别是意义不明的变异 (VUS),经常会导致重新分类,提高诊断准确度. 每年对这些变异进行审查对于临床护理和研究至关重要.
科学领域:
- 遗传学 遗传学 是一个
- 神经发育障碍 神经发育障碍
- 生物信息学是一种生物信息学.
背景情况:
- 神经发育遗传障碍存在诊断挑战,因为疾病机制知识有限,功能数据变异.
- 不确定意义的变异 (VUS) 是常见的,特别是当遗传检测只包括试验器时,这会阻碍准确的诊断.
- 遗传模式对于解释神经发育条件的变异至关重要.
研究的目的:
- 根据既定的准则,重新分类提交给西蒙斯搜索灯注册表的遗传变异.
- 评估神经发育障碍中不确定的重要变异 (VUS) 的重新分类的频率和影响.
- 通过系统的变种再评估,提高诊断准确性和临床护理.
主要方法:
- 使用了美国医学遗传学与基因组学学院 (ACMG) 变种解释指南.
- 雇佣了家族级联测试和全面的文献策划.
- 对具有不确定的意义的变体 (VUS) 进行年度重新评估.
主要成果:
- 超过20%的2834个评估的遗传实验室报告,包括副本数和单一的变异被重新分类.
- 351个单一性VUS中的25.4%被重新分类为可能致病性或致病性.
- 与其他基因相比, *SCN2A*, *SLC6A1* 或 *STXBP1* 的变异显示出更高的重新分类率.
结论:
- 定期对神经发育遗传变异进行重新评估是有益的,因为频繁的重新分类会影响临床护理.
- 西蒙斯搜索灯对不确定变异的系统年度审查有助于全球神经发育社区.
- 重新分类的变体与参与者,研究人员和ClinVar共享,从而提高了数据的可访问性.
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