Article
Author: Fan, Yun ; Xie, Congying ; Yang, Zhixiong ; Wang, Ke ; Zhou, Anqi ; Yi, Shanyong ; Guo, Yanzhen ; Liu, Jiwei ; Li, Xingya ; Shu, Yongqian ; Meng, Zili ; Cang, Shundong ; Wu, Lin ; Lu, Hong ; Chen, Gongyan ; Guo, Zhongliang ; Li, Jingzhang ; Zheng, Rongsheng ; Sun, Meili ; Chen, Zhendong ; Zhuang, Zhixiang ; Wu, Gang ; Wu, Shiman ; Yi, Tienan ; Liu, Zhefeng ; Zhong, Diansheng ; Zhou, Jianying ; Zhu, Bo ; Liu, Chunling ; Zhao, Yanqiu ; Zhao, Guofang ; Fang, Jian ; Huang, Jianan ; Pan, Yueyin ; Hu, Sheng ; Li, Wen ; Sun, Shenghua ; Zhao, Hui ; Zhang, Liangming ; Bi, Minghong ; Liu, Zheng ; Shi, Yuankai ; Yang, Sheng ; Zhang, Longzhen ; Huang, Meijuan ; Han, Zhigang ; Yu, Huiqing ; Greco, Michael ; Lin, Yingcheng ; Wang, Tingting ; Chen, Zhaohong ; Ma, Rui ; Yao, Wenxiu ; Guo, Shuliang ; Wang, Lijun ; Shi, Jianhua ; Wang, Donglin
BACKGROUND:Rezivertinib (BPI-7711) is a novel third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) which revealed the systematic and central nervous system (CNS) antitumor activities for EGFR T790M-mutated advanced NSCLC in previous clinical studies and is further analyzed here.
METHODS:Eligible patients from the previous phase I and phase IIb studies of rezivertinib were included for pooled analysis. Post-progressive patients who received a prescribed dosage (≥180 mg) of rezivertinib orally once daily were included in full analysis set (FAS), while those with stable, asymptomatic CNS lesions, including measurable and non-measurable ones at baseline were included in CNS full analysis set (cFAS). Patients with measurable CNS lesions were included in CNS evaluable for response set (cEFR). BICR-assessed CNS objective response rate (CNS-ORR), CNS disease control rate (CNS-DCR), CNS duration of response (CNS-DoR), CNS progression-free survival (CNS-PFS), and CNS depth of response (CNS-DepOR) were evaluated.
RESULTS:355 patients were included in FAS, among whom 150 and 45 patients were included in cFAS and cEFR. This pooled analysis showed the CNS-ORR was 32.0% (48/150; 95% CI: 24.6-40.1%) and the CNS-DCR was 42.0% (63/150; 95% CI: 34.0-50.3%) in cFAS, while that in cEFR were 68.9% (31/45; 95% CI: 53.4-81.8%) and 100% (45/45; 95% CI: 92.1-100.0%). In cEFR, the median CNS-DepOR and the mean of CNS-DepOR were -52.0% (range: -100.0 to 16.1%) and -46.8% (95% CI: -55.5 to -38.1%). In cFAS, the median CNS-DoR and CNS-PFS were 13.8 (95% CI: 9.6-not calculable [NC]) and 16.5 (95% CI: 13.7-NC) months.
CONCLUSIONS:Rezivertinib demonstrated encouraging clinical CNS efficacy among advanced NSCLC patients with EGFR T790M mutation and CNS metastases.