埃及患者的第一个LIPA突变分析揭示了一种新型变种:沃尔曼病
Nesma M Elaraby1, Eman Reda Galal2, Mohamed Abdel-Hamid3
1Medical Molecular Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt. nm.elaraby@nrc.sci.eg.
Journal of molecular neuroscience : MN
|July 20, 2023
概括
这项研究在埃及沃尔曼病患者的LIPA基因中发现了三种致病变异,包括一种新的可能致病变异. 这些发现扩大了这种罕见的溶酶体储存障碍的已知遗传谱.
科学领域:
- 生物化学 生物化学
- 遗传学 遗传学 是一个
- 罕见疾病 罕见疾病
背景情况:
- 溶解体酸脂酶 (LAL) 缺乏 (LAL-D) 会影响甘油三和胆固醇的水解.
- 沃尔曼病 (WD) 是LAL-D的严重亚型,具有显著的临床表现和不良预后.
- 在不同的人群中,WD的遗传特征对于理解疾病异质性至关重要.
研究的目的:
- 在埃及患者中调查沃尔曼病的临床和分子特征.
- 在这个队列中识别和描述LIPA基因中引起疾病的变异.
- 为了解WD中的基因型-表型相关性做出贡献.
主要方法:
- 针对性下一代测序 (NGS) 用于在五个家庭的七名WD患者中进行变体识别.
- 桑格测序用于确定变异的同分离分析.
- 在分析中预测候选变异的病原性.
主要成果:
- 在与WD相关的LIPA基因中识别了三种致病变体.
- 发现了一种新的误解变异 (c.1122 T>G; p.His374Gln),被归类为可能致病的.
- 在 silico 预测支持所有已识别的变种的致病性质.
结论:
- 这项研究扩大了与沃尔曼病有关的LIPA基因变异的谱.
- 研究结果为表型-基因型相关性和WD遗传咨询提供了有价值的数据.
- 这是埃及对沃尔曼病患者进行的首次临床遗传研究.
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