对遗传性凝血因子XII缺乏的基因分析
Conglian Wu1, Zhishan Zhang1, Yiyin Chen1
1Department of Clinical Laboratory, Quanzhou First Hospital Affiliated to Fujian Medical University, Fujian, People's Republic of China.
Hematology (Amsterdam, Netherlands)
|July 2, 2025
概括
这项研究调查了血缘血统的血统中的遗传性凝血因子XII (FXII) 缺乏. 在F12基因中发现了一种新的同卵性缺失变异,被认为是致病的,导致FXII缺陷.
科学领域:
- 遗传学 遗传学 是一个
- 血液学 血液学 血液学
- 分子生物学分子生物学
背景情况:
- 遗传的凝血因子缺陷可能导致出血障碍.
- 十二因子 (FXII) 缺乏症是一种罕见的遗传性出血障碍.
- 血缘关系的婚姻增加了自体相逆性遗传疾病的风险.
研究的目的:
- 分析血缘婚姻血统的表型和基因型,具有遗传性凝血因子XII (FXII) 缺乏.
- 为了阐明这个家族中FXII缺乏的潜在分子病原性.
主要方法:
- 直接对F12基因进行DNA测序.
- 血小板结晶学和血小板生成试验.
- 生物信息学和蛋白质建模分析已识别的变体.
主要成果:
- 试验对象呈现出延长的激活部分血栓形成时间 (APTT) 和严重下降的FXII活性和抗原水平.
- 在F12基因的第9个外显子中发现了一种同卵性c.811_813delAAC (p.Asn271del) 删除变异.
- 生物信息学和蛋白质建模证实了p.Asn271del变体的致病性,损害了FXII蛋白质的结构和功能.
结论:
- 在F12基因中发现的同卵性缺失变异是致病的,并导致FXII缺陷.
- c.811_813delAAC删除变异,可能与C46 T变异产生协同作用,是这种血统中FXII缺陷的基础.
- 这项研究提供了关于FXII缺乏的分子基础的见解,并强调了基因分析在诊断罕见出血障碍方面的重要性.
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