NEJM:CETP抑制剂dalcetrapib临床无效

2012-11-12 高晓方 医学论坛网

  dal-OUTCOMES研究的最终结果表明,胆固醇酯转移蛋白(CETP)抑制剂dalcetrapib未能对临床转归产生影响。研究结果同时于美国心脏学会(AHA)2012科学年会和《新英格兰医学杂志》(NEJM)公布。   dal-OUTCOMES研究于中期分析后被提前终止,原因在于HDL胆固醇促进药物未能显著减少心血管不良事件。Dalcetrapib是第二个中途失败的CETP抑制剂,尽管最初

  dal-OUTCOMES研究的最终结果表明,胆固醇酯转移蛋白(CETP)抑制剂dalcetrapib未能对临床转归产生影响。研究结果同时于美国心脏学会(AHA)2012科学年会和《新英格兰医学杂志》(NEJM)公布。

  dal-OUTCOMES研究于中期分析后被提前终止,原因在于HDL胆固醇促进药物未能显著减少心血管不良事件。Dalcetrapib是第二个中途失败的CETP抑制剂,尽管最初认为其所引发的HDL胆固醇升高有可能转换为临床事件减少。另外两种CETP抑制剂evacetrapib和anacetrapib正在接受大型III期临床试验的评估。

  一些专家认为,研究中出现的轻度但具有临床意义的血压升高可能在此类药物普遍存在,但在既往实施的anacetrapib和evacetrapib大型研究中并未观察到上述现象。

  此外,anacetrapib和evacetrapib作用机制与dalcetrapib存在显著差异;其降低LDL胆固醇和升高HDL胆固醇的能力均优于后者。在DEFINE研究中,anacetrapib使正在服用他汀类药物的冠脉疾病患者的LDL胆固醇水平降低36%,并使HDL胆固醇水平升高138%。

  dal-OUTCOMES研究失败的原因可能在于dalcetrapib使接受他汀或其他心血管保护药物治疗的患者的HDL胆固醇升高30%,这并不足以转换为临床终点减少。此外,CETP抑制剂可能还生成了一种功能障碍并且无法进行胆固醇逆行转运的HDL胆固醇。


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    2013-05-04 jklm09
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    2013-06-10 bsmagic9140
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    2012-11-19 xue8602
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    2012-11-14 tidiq
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    2012-11-14 tidiq