在正常神经发育的女性中发现新的致病性UQCRC2变异
Lea Abou Haidar1,2, Robert C Harris1,2, Panayotis Pachnis1,3
1Children's Medical Center Research Institute, UT Southwestern Medical Center, Dallas, Texas 75390, USA.
Cold Spring Harbor molecular case studies
|September 14, 2023
概括
这项研究详细介绍了一例罕见的患者,该患者患有乌比奎诺-细胞染色体c还原酶核心蛋白2 (UQCRC2) 缺乏,这是一种电子运输链障碍. 与大多数患者不同,这个人没有表现出神经发育问题,尽管有严重的代谢异常.
科学领域:
- 生物化学 生物化学
- 遗传学 遗传学 是一个
- 儿科 儿科 儿科
背景情况:
- 电子输送链 (ETC) 障碍是由于氧化酸化和能量生产受损而产生的.
- 复合III (CIII) 的缺陷,特别是泛醇-细胞染色体c减少酶,在人类中很罕见.
- UQCRC2基因突变与乳酸和神经发育问题等代谢障碍有关.
研究的目的:
- 描述UQCRC2缺乏的一个独特的儿科病例.
- 在缺乏神经发育功能障碍的患者中研究新的UQCRC2变异.
- 分析已识别的UQCRC2变异的临床表现和致病性.
主要方法:
- 整体外体序列测序用于识别遗传变异.
- 收集了临床数据,包括代谢异常和神经发育状态.
- 评估了已识别的变种的病原性.
主要成果:
- 一名患者在3岁时出现了乳酸性酸症,高血和低血糖症.
- 这位15岁的患者没有表现出神经发育功能障碍.
- 确定了两个新的UQCRC2变体 (c.1189G>A;p.Gly397Arg和c.437T>C;p.Phe146Ser) 的复合异构性.
结论:
- 这一案例突出了在UQCRC2缺乏症中潜在的基因型-表型变异性.
- 鉴定到的新型UQCRC2变体可能具有降低的致病性或不同的临床结果.
- 需要进一步的研究来了解UQCRC2相关疾病的全谱.
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