1. Efficacy and Biomarker Analysis of Camrelizumab in Combination with Apatinib in Patients with Advanced Nonsquamous NSCLC Previously Treated with Chemotherapy
- Author
-
Guanghui Gao, Zhe-Hai Wang, Jifeng Feng, Meijuan Huang, Xinmin Yu, Zhihua Liu, Caicun Zhou, Lihong Wu, Yina Wang, Ying Cheng, Jun Zhao, Yuan Chen, Zhiyong Ma, Weixia Li, Xiaoyan Lin, Shengxiang Ren, Kangsheng Gu, R. Guo, Jun Zhang, Quan Ren Wang, Xinfeng Yang, Gongyan Chen, Yu Yao, Jianxing He, Jianhua Chen, and Jianhua Shi
- Subjects
Adult ,Male ,0301 basic medicine ,Oncology ,Cancer Research ,medicine.medical_specialty ,Lung Neoplasms ,Adolescent ,Combination therapy ,Pyridines ,medicine.medical_treatment ,Population ,Antibodies, Monoclonal, Humanized ,Young Adult ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Carcinoma, Non-Small-Cell Lung ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,Biomarkers, Tumor ,medicine ,Humans ,Apatinib ,education ,Adverse effect ,Survival rate ,Aged ,Retrospective Studies ,Chemotherapy ,education.field_of_study ,business.industry ,Middle Aged ,Prognosis ,Survival Rate ,Clinical trial ,030104 developmental biology ,chemistry ,Case-Control Studies ,030220 oncology & carcinogenesis ,Toxicity ,Female ,business ,Follow-Up Studies - Abstract
Purpose: Our preclinical work suggests that appropriate angiogenesis inhibition could potentiate PD-1/PD-L1 blockade via alleviating hypoxia, increasing infiltration of CD8+ T cells and reducing recruitment of tumor-associated macrophages. We hereby conducted a clinical trial to evaluate this combination in pretreated patients with advanced non–small cell lung cancer (NSCLC). Patients and Methods: The study included phase Ib apatinib dose-escalation and phase II expansion cohorts. Patients received apatinib at doses of 250–500 mg orally once daily, in combination with camrelizumab 200 mg intravenously every 2 weeks. Results: From March 2017 to October 2018, 105 chemotherapy-pretreated patients with nonsquamous NSCLC were enrolled and received apatinib 250 mg (recommended phase II dose) and camrelizumab. Among them, one (1.0%) complete response, 28 (26.7%) partial responses, and 48 (45.7%) stable diseases were observed. In the efficacy-evaluable population (n = 94), objective response rate (ORR) was 30.9% [95% confidence interval (CI), 21.7–41.2]. The median progression-free survival was 5.7 months (95% CI, 4.5–8.8) and overall survival was 15.5 months (95% CI, 10.9–24.5). Efficacy of combination therapy was evident across all PD-L1 and tumor mutation burden subgroups, and appeared to be improved in patients with STK11/KEAP1 mutation (mutant vs. wild-type, ORR: 42.9% vs. 28.1%; 1-year survival rate: 85.1% vs. 53.1%). No unexpected adverse events were observed. Conclusions: Combined apatinib and camrelizumab showed encouraging antitumor activity and acceptable toxicity in chemotherapy-pretreated patients with advanced nonsquamous NSCLC. Patients with STK11/KEAP1 mutation might derive more benefits from this combination. We will validate these results in an ongoing phase III trial (NCT04203485).
- Published
- 2021
- Full Text
- View/download PDF