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A Phase II Study of Trastuzumab Emtansine in HER2-positive Non-Small-Cell Lung Cancer
Journal of Thoracic Oncology ( IF 20.4 ) Pub Date : 2018-02-01 , DOI: 10.1016/j.jtho.2017.10.032
Katsuyuki Hotta , Keisuke Aoe , Toshiyuki Kozuki , Kadoaki Ohashi , Kiichiro Ninomiya , Eiki Ichihara , Toshio Kubo , Takashi Ninomiya , Kenichi Chikamori , Daijiro Harada , Naoyuki Nogami , Taizo Hirata , Shiro Hinotsu , Shinichi Toyooka , Katsuyuki Kiura

&NA; Trastuzumab emtansine (T‐DM1), an anti–erb‐b2 receptor tyrosine kinase 2 (HER2) antibody‐drug conjugate, has been shown to significantly improve survival in HER2‐positive breast cancer. We report a phase II trial of T‐DM1 monotherapy in relapsed NSCLC with documented HER2 positivity (an immunohistochemistry [IHC] score of 3+, both an IHC score of 2+ and fluorescence in situ hybridization positivity, or exon 20 mutation). This study was terminated early because of limited efficacy. The demographic characteristics in the 15 assessable patients were as follows: median age, 67 years; male sex, 47%; performance status of 0 to 1, 80%; HER2 status IHC 3+, 33%; HER status IHC 2+/fluorescence in situ hybridization–positive, 20%; and exon 20 mutation, 47%. The median number of delivered cycles was 3 (range 1–11). One patient achieved a partial response with an objective response rate of 6.7% (90% confidence interval: 0.2–32.0). With a median follow‐up time of 9.2 months, the median progression‐free survival time and median survival time were 2.0 and 10.9 months, respectively. Grade 3 or 4 adverse events included thrombocytopenia (40%) and hepatotoxicity (20%) without any treatment‐related deaths. T‐DM1 had a limited efficacy for HER2‐positive NSCLC in our cohort. Applying the concept of precision medicine to tumors appears challenging; thus, additional molecular approaches are warranted.

中文翻译:

曲妥珠单抗 Emtansine 在 HER2 阳性非小细胞肺癌中的 II 期研究

&NA; Trastuzumab emtansine (T-DM1) 是一种抗 erb-b2 受体酪氨酸激酶 2 (HER2) 抗体药物偶联物,已被证明可显着提高 HER2 阳性乳腺癌的生存率。我们报告了一项 T-DM1 单药治疗复发性 NSCLC 的 II 期试验,有记录的 HER2 阳性(免疫组织化学 [IHC] 评分为 3+,IHC 评分为 2+,荧光原位杂交阳性,或外显子 20 突变)。由于疗效有限,该研究提前终止。15 名可评估患者的人口统计学特征如下:中位年龄 67 岁;男性,47%;性能状态 0 到 1,80%;HER2 状态 IHC 3+,33%;HER 状态 IHC 2+/荧光原位杂交阳性,20%;和外显子 20 突变,47%。交付周期的中位数为 3(范围 1-11)。一名患者实现了部分缓解,客观缓解率为 6.7%(90% 置信区间:0.2-32.0)。中位随访时间为 9.2 个月,中位无进展生存时间和中位生存时间分别为 2.0 和 10.9 个月。3 级或 4 级不良事件包括血小板减少症 (40%) 和肝毒性 (20%),没有任何治疗相关死亡。在我们的队列中,T-DM1 对 HER2 阳性 NSCLC 的疗效有限。将精准医学的概念应用于肿瘤似乎具有挑战性;因此,需要额外的分子方法。3 级或 4 级不良事件包括血小板减少症 (40%) 和肝毒性 (20%),没有任何治疗相关死亡。在我们的队列中,T-DM1 对 HER2 阳性 NSCLC 的疗效有限。将精准医学的概念应用于肿瘤似乎具有挑战性;因此,需要额外的分子方法。3 级或 4 级不良事件包括血小板减少症 (40%) 和肝毒性 (20%),没有任何治疗相关死亡。在我们的队列中,T-DM1 对 HER2 阳性 NSCLC 的疗效有限。将精准医学的概念应用于肿瘤似乎具有挑战性;因此,需要额外的分子方法。
更新日期:2018-02-01
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