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Lancet:Idarucizumab可在5分钟内逆转达比加群作用,且耐受良好

2015-08-08 MedSci MedSci原创

    Idarucizumab是一种单克隆抗体的片段,其结合达比加群有1:1摩尔比的高亲和性。该研究在一个两部分1期研究(增加剂量评估和剂量调查,概念验证的调查)中探讨了增加idarucizumab剂量对于达比加群的抗凝作用的逆转的安全性,耐受性,和有效性。这里呈现的是此次研究概念验证的部分结果。    在这项随机,安慰剂对照,双盲,概念验证的1阶段研究中

研究特点:

在健康人群中,特异性逆转剂idarucizumab 可以迅速、完全、持久地逆转达比加群的抗凝效应。

-通过五分钟单次idarucizumab输注即刻达到完全逆转,且耐受良好。

-Idarucizumab已提交美国食品药品监督管理局(FDA)、欧洲药品管理局(EMA)和加拿大卫生部进行上市审批。

Idarucizumab是一种单克隆抗体的片段,其结合达比加群有1:1摩尔比的高亲和性。该研究在一个两部分1期研究(增加剂量评估和剂量调查,概念验证的调查)中探讨了增加idarucizumab剂量对于达比加群的抗凝作用的逆转的安全性,耐受性,和有效性。这里呈现的是此次研究概念验证的部分结果。

在这项随机,安慰剂对照,双盲,概念验证的1阶段研究中,研究人员招募了身体质量指数为18.5-29.9kg/m2的健康志愿者(年龄18-45岁)加入比利时SGS生命科学的临床研究服务的四个剂量组中的一个。参与者按照3:1的比例被随机组内分配接受idarucizumab或安慰剂,研究人员使用伪随机数发生器和一个提供种子数进行分配。参与者和服务提供者均不知道治疗分配。所有参与者均接受口服达比加群酯每日两次220毫克共3天,并在第4天时接受最后一个剂量。

Idarucizumab(1克,2克,或4克,输液5分,或5克加2.5g,进行5分钟的输液,间隔1小时)输注施用最终达比加群酯给药后约2小时。主要终点是与药物有关的不良事件,是在所有随机分配接受至少一个剂量的达比加群酯的的患者中进行分析的。稀释凝血酶时间反转(dTT),蝰蛇毒凝血时间(ECT),活化部分凝血激酶时间(aPTT)和凝血酶时间(TT)是次要终点,是通过测定第3天和第4天服用比加群酯2小时至12小时(AUEC2-12)影响曲线下的面积进行评估的。

在2013年2月23日和11月29日之间,47人完成这部分的研究。12名被纳入各1克,2克,或5克加2.5克idarucizumab组(9名参与者接受idarucizumab,3名参与者接受安慰剂),11例被纳入到4克idarucizumab组(8名参与者接受idarucizumab,3名参与者接受安慰剂)。药物相关的不良事件均为中度的,7名参与者被报道出现不良事件:1克idarucizumab组一名(输注部位红斑和潮热),5克加2.5克idarucizumab组一名(鼻出血);接受安慰剂组1名(输液部位血肿),达比加群酯预处理过程出现4名(三个血尿和一个鼻出血)。Idarucizumab在比加群诱导的抗凝过程以剂量依赖的方式立即和完全逆转;AUEC2-12的第4天和第3天DTT的平均比例,与使用安慰剂相比为1.01,与用1g idarucizumab 相比为0.26(减少74%),与用2克idarucizumab相比为0.06(减少94%),与用4克idarucizumab相比为0.02(减少98%),与5g加2.5克idarucizumab相比为0.01(减少99%)。无严重的或重度的不良事件的报告,无不良事件导致停药情况,并在治疗组之间不良事件发生率无临床相关的差异。

这些阶段1的研究结果表明,在健康成人中,idarucizumab在达比加群诱导的抗凝过程中能够即时的,完整的,并持续的逆转,并且耐受性良好,没有意外的或临床相关的安全问题,这些研究结果支持进一步的测试。进一步的临床研究正在进行中。

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    2016-07-24 howi
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    2016-07-13 snf701207
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    2015-10-07 zhouxue1990

    达比加群有出血风险

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=2077283, encodeId=dcc320e72834e, content=<a href='/topic/show?id=ef96939538' target=_blank style='color:#2F92EE;'>#Idarucizumab#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=9395, encryptionId=ef96939538, topicName=Idarucizumab)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=aa5a2500103, createdName=ms920641618706883, createdTime=Sun Oct 18 00:40:00 CST 2015, time=2015-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1828194, encodeId=a3eb182819415, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Sun Jul 24 02:40:00 CST 2016, time=2016-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911709, encodeId=bb821911e0920, content=<a href='/topic/show?id=4de7112046c' target=_blank style='color:#2F92EE;'>#mAb#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11204, encryptionId=4de7112046c, topicName=mAb)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=25e7304, createdName=snf701207, createdTime=Wed Jul 13 18:40:00 CST 2016, time=2016-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=38003, encodeId=bf5338003cc, content=达比加群有出血风险, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a1a01625167, createdName=zhouxue1990, createdTime=Wed Oct 07 22:11:00 CST 2015, time=2015-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=35347, encodeId=dc883534ef5, content=这样会推动这类药物的快速应用, beContent=null, objectType=article, channel=null, level=null, likeNumber=133, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Mon Aug 10 03:45:00 CST 2015, time=2015-08-10, status=1, ipAttribution=)]
    2015-08-10 lovetcm

    这样会推动这类药物的快速应用

    0

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最近一期《英国医学杂志》(BMJ)以“十分罕见”的方式在同期登载了四篇有关达比加群酯的文章,还发表了一篇社论和评论。这些文章报道方式与我们熟悉的学术讨论不同。两篇实质性内容的文章采用的是罗列事实,带有叙事性质的笔法。其中一篇的栏目是“Feature”。这一名词,在英文中可以译为”故事片”。文章中列举了很多有关RE-LY试验中的不足,个别事件的错报,另外就是关于血药浓度测定亚组分析的结果。所提到

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美国学者们对比了达比加群和华法林相关的出血风险。结果表明,达比加群与严重出血发生率较高有关,尤其是消化道出血风险更高,但颅内出血风险较低。因此研究者提示,在应用达比加群时应注意上述风险,尤其是高危人群。相关论文11月3日在线发表于《美国医学会杂志·内科学》(JAMA Intern Med)。 该回顾性队列研究共纳入达比加群应用者和华法林应用者分别1302例和 8102例,这些患者于最初诊

Eur J Heart Fail:无论是否合并心衰达比加群较华法林的总体获益均一致存在

心衰常与房颤同时存在,房颤可使心衰加重并增加了患者的死亡风险。在这类患者中,治疗目标是提高生存率和改善生活质量。近期Ferreira 等在入组RE-LY试验的心衰病史患者中,比较了达比加群和华法林的疗效和安全性。RE-LY试验共入组了4904例心衰患者,亚组分析结果显示,华法林组的卒中或全身性栓塞的发生率为1.92%/年,达比加群110mg bid 组为1.90%/年(HR=0.99,95% CI

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