致使严重高胆固醇血症的新型芬兰丰富变异及其对冠状动脉疾病的临床影响
Nella Junna1, Sanni Ruotsalainen1, Pietari Ripatti1
1Institute for Molecular Medicine Finland, FIMM, HiLIFE, University of Helsinki, Biomedicum 2U, Tukholmankatu 8, 00290, Helsinki, Finland.
Atherosclerosis
|October 17, 2023
概括
严重的高胆固醇血会增加冠状动脉疾病的风险. 这项研究确定了新的遗传变异,并使用大量队列来评估他们的心血管疾病风险,帮助临床评估.
科学领域:
- 心血管遗传学 心血管遗传学
- 医学基因组学 医学基因组学
- 临床脂质学 临床脂质学
背景情况:
- 严重的高胆固醇血症是冠状动脉疾病 (CAD) 的重要危险因素.
- 遗传因素起着至关重要的作用,但识别致病突变仍然具有挑战性.
- 相当数量的突变载体未被诊断,这阻碍了有效的风险管理.
研究的目的:
- 评估大型参考队列 (FinnGen研究) 的临床实用性,以评估与严重高胆固醇血症相关的遗传变异.
- 帮助临床评估通过外体序列测序在患有严重高胆固醇血症的患者中发现的候选基因变异.
主要方法:
- 利用来自FinnGen研究的数据 (356,082人) 拥有广泛的健康记录.
- 对351名严重高胆固醇血症患者的目标人群进行了外体序列分析.
- 用于in silico和临床评估来评估已识别的遗传变异.
主要成果:
- 在已知的高胆固醇血症基因中发现了23种罕见的误解突变,其中包括前面描述的3种.
- 确定了LDLR (Arg574Leu,Glu626Lys) 中的两个新型可能的致病变体,以及LDLRAP1 (Arg151Trp) 中的一种.
- 发现新型LDLR和LDLRAP1变异的异构体载体增加了他类药物治疗的使用率和缺血性心脏病的风险.
结论:
- 这项研究阐明了导致高胆固醇血症的多样化基因变异谱.
- 证明了使用大量参考人群来评估候选基因变异对心血管疾病风险的影响的有效性.
- 强调遗传评估在管理严重高胆固醇血症和相关心血管风险方面的重要性.
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