药物相互作用与药物相互作用的临床评估
Neha Maharao1, Donghong Xu1, Punag Divanji2
1Department of Clinical Pharmacology, Cytokinetics, Incorporated, South San Francisco, California, USA.
Clinical and translational science
|March 5, 2026
概括
针对阻塞性多变性心肌病的新疗法Aficamten正在进行药物相互作用研究. 结果显示,aficamten被多个CYP酶代谢,这表明与大多数药物相互作用的潜力有限.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药物新陈代谢 药物新陈代谢
- 心血管医学 心血管医学
背景情况:
- 阿菲卡门特是一种新型心脏肌酸酶抑制剂,最近被批准用于阻塞性多变性心肌病 (oHCM).
- 了解潜在的药物相互作用 (DDI) 对于aficamten的安全有效的临床使用至关重要.
研究的目的:
- 在健康参与者中全面评估aficamten的药物相互作用 (DDI) 概况.
- 评估aficamten作为DDI的受害者和事者的作用,涉及P450 (CYP) 酶和P-糖蛋白 (P-gp).
主要方法:
- 在健康的志愿者中进行了两项第一阶段研究.
- 使用CYP诱导剂 (卡巴马泽) 和抑制剂 (伊特拉可纳,帕罗克塞丁,可纳,可塞丁) 调查了阿菲卡门的新陈代谢.
- 使用达比加特兰 (dabigatran etexilate) 评估了阿菲卡门特对P-gp抑制的潜力.
主要成果:
- 阿菲卡门主要通过CYP2C9 (54%),CYP2D6 (21%) 和CYP3A (21%) 代谢,CYP2C19的参与很小.
- 同时使用强大的CYP抑制剂,如可纳,显著增加了aficamten暴露 (278%),而卡巴马西平则降低了50%.
- 阿菲卡门特显示P-gp的抑制较弱,达比加特兰暴露量略有增加 (26%-27%).
结论:
- 阿菲卡门特表现出复杂的代谢特征,涉及多个CYP酶,有助于其DDI负担.
- 预计主要与强大的多途径CYP抑制剂或诱导剂有显著的DDI.
- 阿菲卡门特表现出较弱的P-gp抑制,这表明对P-gp基质药物的影响有限.
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