Lancet :MEK抑制剂Trametinib的Ⅱ期临床试验推荐剂量确定

2012-07-27 文馨 医学论坛网

  《柳叶刀·肿瘤》(The Lancet Oncology)杂志2012年7月13日在线发表的一项研究确定了Trametinib的Ⅱ期临床试验的推荐剂量为2mg/d,这个剂量可以耐受并且副作用可以控制。Trametinib对预期靶点具有抑制作用并且有临床活动,可作为单一用药和联合用药进行进一步开发。   抑制MEK可以阻止细胞增殖并且诱导细胞凋亡,因此,这个酶是抗肿瘤的一个

  《柳叶刀·肿瘤》(The Lancet Oncology)杂志2012年7月13日在线发表的一项研究确定了Trametinib的Ⅱ期临床试验的推荐剂量为2mg/d,这个剂量可以耐受并且副作用可以控制。Trametinib对预期靶点具有抑制作用并且有临床活动,可作为单一用药和联合用药进行进一步开发。

  抑制MEK可以阻止细胞增殖并且诱导细胞凋亡,因此,这个酶是抗肿瘤的一个关键靶点。Trametinib是一个选择性、口服用药的MEK1/MEK2抑制剂。该研究旨在确定在患有晚期实体肿瘤的患者中,Trametinib的最大耐受剂量和Ⅱ期临床试验的推荐剂量,并评价其安全性、药代动力学、药效学和有效率。

  该研究为多中心的Ⅰ期临床研究,受试者为晚期实体肿瘤患者并且无脏器功能不全。研究分3部分:剂量递增以确定最大可耐受剂量;确定Ⅱ期临床试验的推荐剂量;评价药效变化。分析间断给药与连续给药方案。通过血样和肿瘤活检标本来评价药代动力学与药效变化。不良事件按照常规毒性标准进行定义,肿瘤疗效的检测基于《实体肿瘤疗效评价标准》。本研究在ClinicalTrials.gov注册,注册号码是NCT00687622。

  该研究纳入了206名患者(中位年龄58.5岁,年龄范围:19—92岁)。剂量限制性毒性作用包括:皮疹(n=2),腹泻(n=1),浆液性中心性视网膜病(n=2)。最常见的与治疗有关的不良事件是皮疹或皮炎痤疮(n=165; 80%)和腹泻(87; 42%),大多数为1级和2级。最大耐受剂量是3 mg/d,Ⅱ期临床试验的推荐剂量为2mg/d。Trametinib的有效半衰期约为4天。以Ⅱ期临床试验的推荐剂量进行试验,药物暴露分析显示患者间的变异性较小并且谷峰比较小,为1.81。此外,贯穿整个给药间隔,血浆中的平均浓度较临床前的靶浓度高。试验中观察到了旁路抑制与临床活动,记录到了客观有效人数为21(10%)。

原文链接:Jeffrey R Infante, Leslie A Fecher, Gerald S Falchook, Sujatha Nallapareddy, Michael S Gordon, Carlos Becerra, Douglas J DeMarini, Donna S Cox, Yanmei Xu, Shannon R Morris.Safety, pharmacokinetic, pharmacodynamic, and efficacy data for the oral MEK inhibitor trametinib: a phase 1 dose-escalation trial.The Lancet Oncology, 16 July 2012



    

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    2012-11-13 bsmagic9140
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    2012-08-16 naiwu77
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    2013-04-08 howi
  5. [GetPortalCommentsPageByObjectIdResponse(id=1656544, encodeId=5c2d1656544b2, content=<a href='/topic/show?id=3ca31e71903' target=_blank style='color:#2F92EE;'>#TRA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17719, encryptionId=3ca31e71903, topicName=TRA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=757b24868428, createdName=bsmagic9140, createdTime=Tue Nov 13 11:57:00 CST 2012, time=2012-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1752359, encodeId=33401e52359c1, content=<a href='/topic/show?id=2cd11e738fd' target=_blank style='color:#2F92EE;'>#Trametinib#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17738, encryptionId=2cd11e738fd, topicName=Trametinib)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0da336510503, createdName=pandamao2022, createdTime=Sat Aug 04 21:57:00 CST 2012, time=2012-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1943872, encodeId=adfb19438e2a3, content=<a href='/topic/show?id=d2af1152597' target=_blank style='color:#2F92EE;'>#MEK#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11525, encryptionId=d2af1152597, topicName=MEK)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5b0e350, createdName=naiwu77, createdTime=Thu Aug 16 07:57:00 CST 2012, time=2012-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1827437, encodeId=777e182e43794, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Mon Apr 08 11:57:00 CST 2013, time=2013-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1895638, encodeId=8f99189563895, content=<a href='/topic/show?id=4a391158248' target=_blank style='color:#2F92EE;'>#MET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11582, encryptionId=4a391158248, topicName=MET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18fc139, createdName=一闲, createdTime=Mon Aug 06 17:57:00 CST 2012, time=2012-08-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1851104, encodeId=35e4185110455, content=<a href='/topic/show?id=f0a254918f0' target=_blank style='color:#2F92EE;'>#抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54918, encryptionId=f0a254918f0, topicName=抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Fri Jun 28 17:57:00 CST 2013, time=2013-06-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1512724, encodeId=27531512e2472, content=<a href='/topic/show?id=c3e91152873' target=_blank style='color:#2F92EE;'>#MEK抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11528, encryptionId=c3e91152873, topicName=MEK抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=318b10497059, createdName=ms2186806800017884, createdTime=Sun Jul 29 01:57:00 CST 2012, time=2012-07-29, status=1, ipAttribution=)]
    2012-08-06 一闲
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