与PPP2R1A相关的神经发育障碍的临床和分子谱:系统性审查
Jaewoong Lee1, Ari Ahn1, Jaeeun Yoo1
1Department of Laboratory Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea.
Genes
|December 30, 2025
概括
在PPP2R1A的致病变体导致霍格-詹森综合征2,神经发育障碍. 本综述定义了临床谱,确定了复发变异,并将特定突变与疾病严重程度联系起来,以改善遗传咨询.
科学领域:
- 神经遗传学 神经遗传学
- 发展生物学 发展生物学
- 人类遗传学 人类遗传学
背景情况:
- PPP2R1A编码了蛋白质酸酶2A (PP2A) 的支架亚单元Aα.
- 致病变体导致霍格-詹森综合征2,这是一个罕见的神经发育障碍.
- 这种疾病的特点是发育迟缓,智力障碍,和大脑形.
研究的目的:
- 系统地审查PPP2R1A相关疾病的已发表病例.
- 定义临床谱和表征突变格局.
- 为了更好的理解和管理,探索基因型-表型相关性.
主要方法:
- 在PubMed,Embase和Web of Science进行了系统的文献搜索.
- 数据提取遵循PRISMA指南,包括研究特征,遗传发现和表型特征.
- 基因评论和OMIM参考文献补充了搜索.
主要成果:
- 确定了16项研究和60名患有PPP2R1A相关疾病的患者.
- 发现了26种不同的致病变体,主要是HEAT重复5-7中的新异质合体误解变化.
- 发育迟缓和智力障碍是普遍存在的; (50.9%) 和大脑异常 (83.1%) 是常见的. 像p.Arg182Trp这样的复发变异与严重的表型和增加的死亡率有关.
结论:
- 与PPP2R1A相关的疾病具有广泛的临床范围,从致命的新生儿疾病到较轻的神经发育结果.
- 产前的特征,如腹腔巨和体异常,可以实现早期遗传诊断.
- 变异特异性预后对于临床管理,诊断,预后和遗传咨询至关重要.
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