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在沙特阿拉伯人口中超越CAH的原发性上腺功能缺陷的遗传学
Mohamed H Al-Hamed1,2, Alya Qari2,3, Lamya Alrayes4
1Department of Clinical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
Molecular genetics & genomic medicine
|January 24, 2025
概括
外体测序 (ES) 在90%的沙特家庭中确定了原发性上腺功能缺陷 (PAI) 的遗传原因. 与X相关的遗传和创始突变是PAI这一队列中的关键因素.
科学领域:
- 遗传学 遗传学 是一个
- 内分泌学 在内分泌学.
- 基因组医学是基因组医学.
背景情况:
- 初级上腺功能缺陷 (PAI) 的诊断具有挑战性,需要紧急治疗.
- 人群中的血缘关系可能会影响对衰退性遗传疾病的鉴定.
- 沙特阿拉伯的血缘关系率很高,可能会影响遗传疾病的诊断.
研究的目的:
- 在沙特血缘人口中调查PAI的分子遗传原因.
- 为了确定PAI的外体序列测序 (ES) 的诊断产量.
- 在PAI患者中识别常见的遗传变异和遗传模式.
主要方法:
- 在47名来自30个PAI家庭的PAI患者身上进行了exome测序 (ES).
- 该队列排除了先天性上腺增生症 (CAH),并具有70%的血缘关系率.
- 分析了基因变异,以确定PAI的病原性原因.
主要成果:
- 诊断产量达到了90%,在27个家族中确定了致病性/可能致病性变体.
- 在ABCD1中,导致上腺细胞衰竭的半体变异是最常见的遗传发现 (16个家族).
- 发现了6种新型变种,包括4种预测致病性/可能致病性和2种VUS. 在10个家族中提出了ABCD1,NR0B1和MC2R的创始突变.
结论:
- 外体序列测序 (ES) 是非常有效的,在这个队列中90%的PAI患者中检测出分子异常.
- 在这个群体中,X链接遗传代表了PAI的主要模式.
- 创始人突变可能对在这个沙特阿拉伯队列中观察到的高诊断产量作出了重大贡献.
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