ASCO 2014:埃克替尼+全脑放疗脑转移的EGFR突变NSCLC患者的I期试验

2014-05-31 李文丰 译 医学论坛网

摘要号:#8110 第一作者:周麟,四川大学华西医院 标题:埃克替尼联合全脑放疗用于发生脑转移的EGFR突变NSCLC患者的I期临床试验 背景:已经证明埃克替尼在非小细胞肺癌(NSCLC)患者中的疗效与吉非替尼相似。本I期临床试验(NCT0151693)评估了埃克替尼联合全脑放疗(WBRT)在治疗发生脑转移的EGFR突变NSCLC患者中的剂量递增毒性,同时也评

摘要号:#8110

第一作者:周麟,四川大学华西医院

标题:埃克替尼联合全脑放疗用于发生脑转移的EGFR突变NSCLC患者的I期临床试验

背景:已经证明埃克替尼在非小细胞肺癌(NSCLC)患者中的疗效与吉非替尼相似。本I期临床试验(NCT0151693)评估了埃克替尼联合全脑放疗(WBRT)在治疗发生脑转移的EGFR突变NSCLC患者中的剂量递增毒性,同时也评价了埃克替尼在剂量递增时的脑脊液渗透率。

方法:此为3+3设计的队列研究,埃克替尼的剂量递增模式为125mg 每天三次(tid)、250mg tid、375mg tid、500mg tid和625mg tid。全脑放疗(剂量为37.7Gy/15次/21天)前7天便开始埃可替尼治疗,之后两者维持联用,直至疾病恶化或不耐耐受的毒性出现。治疗开始后的第7天(全脑放疗前)、第29天(全脑放疗后)、第57天的早上7:30-8:00(服用埃可替尼之前)采集患者血液和脑脊液标本。

结果:本试验纳入15名患者。治疗相关不良反应轻微(CTCAE 1-2级),最常见的治疗相关不良反应是脱发(15/15),痤疮样皮疹(14/15)和恶心(11/15)。在治疗剂量为500mg tid时有6人出现不良反应,其中3人为剂量限制性毒性,包括1人出现丙氨酸转移酶升高(3级)和2人出现恶心(2级),在埃克替尼减量到250mg tid时,该不良反应消失。平均埃可替尼脑脊液渗透率为4.04%(范围:1.23%-9.71%),而且埃克替尼的血浆浓度和脑脊液浓度有较好相关性(相关系数R2=0.577,P<0.001)。治疗第7、29、57天埃可替尼的血浆浓度、脑脊液浓度、脑脊液渗透率之间无统计学差异。然而,在埃克替尼剂量为375mg tid时,其脑脊液浓度和渗透率更高(平均CSF浓度:154.09ng/ml,P<0.001;平均渗透率:7.06%,P<0.001)。

结论:全脑放疗联合埃克替尼(125mg tid-375mg tid)维持治疗用于发生脑转移的EGFR突变NSCLC患者耐受性较好。全脑放疗也许并不能增加埃克替尼的脑脊液渗透率,但当埃克替尼剂量为375mg tid时,脑脊液浓度和渗透率最高。

研究链接:Phase I trial of icotinib combined with whole brain radiotherapy for EGFR-mutated non-small cell lung cancer patients with brain metastases. (Abstract 8110)


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    2014-10-28 quxin068
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    2015-04-29 jklm09
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    2014-06-02 liuyiping

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