Efficacy and safety of vebreltinib in patients with advanced NSCLC harboring MET exon 14-skipping: Results of 2.5-year follow-up in KUNPENG.

Authors

null

Jin-Ji Yang

Guangdong Lung Cancer Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China

Jin-Ji Yang , Yan Zhang , Lin Wu , Jie Hu , Zhe-Hai Wang , Jing-Hua Chen , Yun Fan , Gen Lin , Qiming Wang , Yu Yao , Jun Zhao , Yuan Chen , Jian Fang , Yong Song , Wei Zhang , Ying Cheng , Ren-Hua Guo , XingYa Li , Yi-Long Wu

Organizations

Guangdong Lung Cancer Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China, Lung Cancer Center, West China Hospital, Sichuan University, Chengdu, China, Thoracic Internal Medicine Oncology Department, Hunan Cancer Hospital, Changsha, Hunan, China, Pulmonary and Critical Care Medicine, Zhongshan Hospital Affiliated to Fudan University, Shanghai, China, Department of Medical Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China, Department of Medical Oncology, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affifiliated Hospital, Southern University of Science and Technology), Shenzhen, China, Department of Thoracic Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China, Department of Internal Medicine-Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou, China, Respiratory Department, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China, Oncology Department, The First Affiliated Hospital of Xi’an Jiaotong University, Xi'an, China, Department of Thoracic Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, Beijing, China, Lung Cancer Department, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, Lung Cancer Department, Peking University Cancer Hospital and Institute, Beijing, China, Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China, Lung Cancer Department, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China, Lung Cancer Department, Jilin Cancer Hospital, Changchun, China, Lung Cancer Department, Jiangsu Provincial People's Hospital, Nanjing, China, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China

Research Funding

Beijing Pearl Biotechnology Co., Ltd. and Avistone Biotechnology Limited.

Background: Vebreltinib (PLB1001), a potent and highly selective c-MET inhibitor, demonstrated superior objective response rate (ORR) benefits in locally advanced or metastatic non-small-cell lung cancer (NSCLC) patients (pts) with MET exon 14 (METex14) skipping mutations in the previous analysis of the phase II KUPENG study. Here we present results from 2.5 years of follow-up of pts in KUNPENG. Methods: In this Phase Ⅱ, open-label, multicenter, and multi-cohort study, tumor tissue was assessed for METex14 skipping mutation using next-generation sequencing (NGS) from CAP or CLIA certificated local or central laboratories. Pts in Cohort 1 received 200 mg of vebreltinib twice daily (28 days per cycle) until discontinuation criteria were met. The primary endpoint was ORR assessed by blinded independent review committee (BIRC). Results: Between Jan 17, 2020 and Feb 09,2021, 52 pts were enrolled in Cohort 1. As of the data cutoff date (Aug 09, 2023), the median duration of follow-up was 19.1 months (range, 1.0-42.7) and the median duration of treatment was 9.9 months (range, 0.6-42.7). Per BIRC assessment, the ORR was 75% (95% CI: 61.1-86.0), the disease control rate (DCR) was 96.2% (95% CI 86.8-99.5), the median duration of response (DoR) was 16.5 months (95% CI 9.2-19.4), the median time to response (TTR) was 1.0 month (95% CI 1.0-2.8), the median progression-free survival (PFS) was 14.3 months (95% CI 6.4-18.2), and the median overall survival (OS) was 20.3 months (95% CI 16.2-29.7). The 3-year OS rate was 35.1%. Subgroup analyses showed the ORR was 100.0%, 66.7%, 85.7% and 100.0% among pts with any baseline brain metastases (N=5), pts with any baseline liver metastases (N=6), pts aged 75 years and older (N=21) and pts with co-occurring of MET amplification (N=12), respectively. The most common (≥20%) treatment-related adverse events (TRAEs) in all the 135 pts enrolled in this study were peripheral edema (56.3%), hypoalbuminemia (27.4%), hypoproteinemia (25.9%) and anemia (20.7%). TRAEs were mainly grade 1 or 2. No new safety signals were reported with long-term vebreltinib treatment. Conclusions: Vebreltinib consistently showed promising efficacy and favorable safety in NSCLC pts with METex14 mutations. Clinical trial information: NCT04258033.

Summary of efficacy assessed by BIRC.

VariablesTreatment-
naïve (n=35)
Previously-treated (n=17)All
(n=52)
ORR (%)27 (77.1)12 (70.6)39 (75.0)
95% CI59.9-89.644.0-89.761.1-86.0
DCR (%)34 (97.1)16 (94.1)50 (96.2)
95% CI85.1-99.971.3-99.986.8-99.5
mDoR, months (95% CI)17.1 (9.2-21.8)15.3 (3.7-19.4)16.5 (9.2-19.4)
mTTR, months (95% CI)1.0 (1.0-1.2)1.9 (0.9-4.6)1.0 (1.0-2.8)
mPFS, months (95% CI)14.5 (6.3-20.3)7.7 (3.7-20.3)14.3 (6.4-18.2)
mOS, months (95% CI)20.3 (16.2-NE)20.7 (13.7-NE)20.3 (16.2-29.7)

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Abstract Details

Meeting

2024 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Lung Cancer—Non-Small Cell Metastatic

Track

Lung Cancer

Sub Track

Metastatic Non–Small Cell Lung Cancer

Clinical Trial Registration Number

NCT04258033

Citation

J Clin Oncol 42, 2024 (suppl 16; abstr 8557)

DOI

10.1200/JCO.2024.42.16_suppl.8557

Abstract #

8557

Poster Bd #

421

Abstract Disclosures