PiComplutense (p.Pro393Thr):一种新型的SERPINA1变体在两个兄弟姐妹中发现的α-1抗素缺乏症
Juan Luis Rodríguez Hermosa1,2,3, Soha Esmaili1,4, Sofía Ayat Ortiz1
1Pulmonology Department. Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Del Hospital Clínico San Carlos (IdISSC), Madrid, Spain.
Respiratory medicine case reports
|October 10, 2025
概括
两位患有阿尔法-1抗素缺乏症 (AATD) 和不一致的表型的姐妹被发现携带了一种新的SERPINA1变异 (PiComplutense) 与Z等位基因一起. 这凸显了完整基因测序对于诊断罕见的AATD变异的重要性.
科学领域:
- 遗传学 遗传学 是一个
- 肺部病理学 肺部病理学
- 生物化学 生物化学
背景情况:
- 阿尔法-1抗素缺乏症 (AATD) 是一种遗传性疾病,与早期发病的肺气和肝病有关.
- 目前的诊断方法往往集中在常见的等位基因 (S和Z),可能会忽视罕见的变异.
- 现型-基因型不一致可能发生,需要进一步调查.
研究的目的:
- 为了研究AATD的遗传基础在两个姐妹持续低血清AAT水平和不一致的临床表现.
- 识别有助于AATD表型的新型SERPINA1变异.
- 在复杂的AATD病例中强调综合基因分析的诊断效用.
主要方法:
- 两个相关个体的临床,功能和放射性评估.
- 血清AAT水平的量化.
- 关于 SERPINA1 基因的全基因测序.
主要成果:
- 这两位姐妹的血清AAT水平显著降低 (50-61 mg/dL).
- 尽管AAT水平相似低,但一个妹妹仍然无症状,而另一个妹妹患有肺气和气流阻塞.
- 完整基因测序确定了一种新的SERPINA1变异,c.1177C>A (p.Pro393Thr),被指定为PiComplutense,在两个个体中与Z等位基因转换.
结论:
- 新的PiComplutense变异,与Z等位基因结合,可能是致病性,并有助于AATD.
- 扩展的SERPINA1测序对于在生化基因型异常的情况下诊断AATD至关重要.
- 改善早期检测,风险评估和个性化管理策略是AATD所需的.
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