一个罕见的华法林抗性病例和可能的机制探索
Li Zhao1, Zhenguo Zhai2, Pengmei Li1
1Pharmacy Department, China-Japan Friendship Hospital, Beijing, People's Republic of China.
Pharmacogenomics and personalized medicine
|June 26, 2023
概括
研究了一名患有深静脉血栓和肺栓塞的患者的华法林耐药性. 基因突变,特别是CYP4F2基因,被确定为患者对华法林治疗反应不佳的潜在原因.
科学领域:
- 药物基因组学 药物基因组学
- 内部医学 内部医学
- 临床药理学 临床药理学
背景情况:
- 华法林是一种常见的抗凝剂,用于深静脉血栓症 (DVT) 和肺栓塞 (PE).
- 达到并保持治疗性国际规范化比率 (INR) 范围对于有效的抗凝剂至关重要.
- 华法林耐药性,尽管剂量充足,但因INR低于最佳的特征,构成了临床挑战.
研究的目的:
- 调查潜在的遗传因素,有助于华法林耐药性在患有DVT和PE的患者.
- 为了确定与患者对升级的华法林剂量缺乏反应相关的特定基因多态.
主要方法:
- 分析了一名患有DVT和PE的患者,表现出华法林耐药性.
- 进行了基因分析,以检测已知影响华法林代谢和反应的基因中的单核酸多态 (SNPs).
- 测量了华法林的最低血度.
主要成果:
- 患者没有显著的INR增加,尽管华法林剂量大幅增加.
- 基因分析显示CYP2C9,VKORC1,CYP4F2和GGCX基因的突变.
- 在CYP4F2基因 (rs2108622) 中的一种特定突变被确定为对华法林耐药性的潜在贡献者.
- 患者的最低血华法林度低于治疗范围.
结论:
- 鉴定的CYP4F2基因突变 (rs2108622) 可能导致观察到的华法林耐药性.
- 药物遗传学因素在个体华法林剂量反应中起着重要作用.
- 需要进一步的研究,以充分阐明华法林对中国人口反应的药物基因组学和药物动力学决定因素.
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