J THORAC ONCOL:吴一龙教授∣MET抑制剂序贯用药克服奥希替尼诱导的继发MET突变耐药

2017-11-25 wrangx 肿瘤资讯 发表于威斯康星

44岁女性,晚期肺腺癌伴L858R突变,一线吉非替尼治疗进展后出现T790M耐药,改为奥希替尼治疗,19个月后出现右肾上腺转移进展。液体活检发现MET扩增,克唑替尼联合奥希替尼治疗,评效PR,患者肿瘤症状缓解、体力改善,治疗3个月后进展。第2次液体活检检测到D1228N/H,Y1230H和D1231Y突变四个基因突变,给予试验性卡博替尼治疗,治疗1周后呼吸困难缓解可下床活动,胸片示双肺结节缩小,左

44岁女性,晚期肺腺癌伴L858R突变,一线吉非替尼治疗进展后出现T790M耐药,改为奥希替尼治疗,19个月后出现右肾上腺转移进展。液体活检发现MET扩增,克唑替尼联合奥希替尼治疗,评效PR,患者肿瘤症状缓解、体力改善,治疗3个月后进展。第2次液体活检检测到D1228N/H,Y1230H和D1231Y突变四个基因突变,给予试验性卡博替尼治疗,治疗1周后呼吸困难缓解可下床活动,胸片示双肺结节缩小,左侧胸腔积液减少。卡博替尼治疗1个月后因症状加重行影像学评估,疗效为PD。第3次液体活检发现D1228N突变,而其他三种突变消失,D1228N突变AF值从44%增加到65%。计算机预测分析D1228N突变可能影响卡博替尼疗效。

本病例报道亮点,序贯使用MET抑制剂可获得更长临床有效时间。既往报道MET D1228N突变对卡博替尼有效,但本病例发现为耐药机制,临床和基础研究间可能存在差异。D1231Y为首次报道的新突变。治疗过程中基因随时间的变化。
 
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    2018-09-19 一闲
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    2018-03-22 yyj062
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    2018-08-28 jklm09
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    2018-08-24 minlingfeng
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    2018-07-12 feifers
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    2017-11-26 三生有幸9135

    学习一下谢谢分享

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