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德国殷格翰2015年6月17日——16日柳叶刀发表了特异性逆转剂idarucizumab逆转达比加群酯抗凝效应的研究结果。研究结果显示,idarucizumab可迅速、完全、持久地逆转泰毕全?的抗凝效应。研究数据表明,针对需要逆转抗凝效应的情况,例如需紧急干预治疗时,特异性拮抗剂可以提供一种具有高度靶向作用的治疗选择1。美国FDA认定Idarucizumab为突破性治疗药物2。目前,勃林格殷格翰公司已将Idarucizumab提交至FDA、EMA和加拿大卫生部进行上市审批3。
在柳叶刀现已发表的健康志愿者研究中,参与者首先接受泰毕全?治疗,然后接受idarucizumab治疗。该实验在泰毕全?末次给药后2小时给予特异性逆转剂,此时达比加群酯的浓度处于峰值。输注idarucizumab五分钟后,抗凝作用即刻逆转至基线水平。2g或以上剂量可使逆转效应持续超过24小时。在研究参与者中,Idarucizumab耐受良好1。
“柳叶刀发表的数据表明,在健康志愿者中,idarucizumab对达比加群酯的逆转效果惊人,” 勃林格殷格翰心血管治疗领域医学副总裁J?rg Kreuzer教授表示,“一旦获批,意味着特异性新型口服抗凝药逆转剂的诞生,对于抗凝治疗具有里程碑式的意义。”
在2014年12月的美国血液学会年会上,曾公布idarucizumab在老年志愿者及肾损害志愿者人群中表现出的相似结果4。勃林格殷格翰正在开展idarucizumab在患者人群研究——RE-VERSE ADTM研究5。
(Idarucizumab是一种试验药物,尚未获批用以临床治疗,需要对其安全性和疗效作进一步检查。)
参考文献:
1.Glund S, et al. Safety, tolerability, and efficacy of idarucizumab for the reversal of the anticoagulant effect of dabigatran in healthy make volunteers: a randomised, placebo-controlled, double-blind phase 1 trial. The Lancet. Published online June 16, 2015. Available at
http://dx.doi.org/10.1016/S0140-6736(15)60732-2
2.Boehringer Ingelheim Press Release – 30 June 2014. U.S. FDA grants Breakthrough Therapy Designation to Pradaxa? (dabigatran etexilate) specific investigational antidote.
http://www.boehringer-ingelheim.com/news/newsreleases/pressreleases/2014/30june2014_dabigatranetexilate.html Last accessed April 2015.
3.Boehringer Ingelheim Press Release – 3 March 2015. Boehringer Ingelheim submits applications for approval of idarucizumab, specific reversal agent to dabigatran etexilate (Pradaxa?), to EMA, FDA and Health Canada.
http://www.boehringer-ingelheim.com/news/newsreleases/pressreleases/2015/03march2015_dabigatranetexilate.html Last accessed April 2015.
4.Glund S. et al. Idarucizumab, a Specific Antidote for Dabigatran: Immediate, Complete and Sustained Reversal of Dabigatran Induced Anticoagulation in Elderly and Renally Impaired Subjects. Presented on 8th December at the 56th American Society of Hematology Annual Meeting & Exposition, San Francisco, USA. Available at:
https://ash.confex.com/ash/2014/webprogram/Paper74960.html Last accessed April 2015.
5.Pollack C, et al. A Phase III Clinical Trial to Evaluate the Reversal Effects of Idarucizumab on Active Dabigatran (RE-VERSE AD?). Poster presentation at the International Stroke Conference, Nashville, TN, USA, 11-13 February 2015.
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