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Article Abstract
Objective: To describe characteristics, treatment patterns, and outcomes of patients with EGFR exon 20 insertion (exon20ins)-positive advanced or metastatic non-small cell lung cancer (NSCLC) who received amivantamab or mobocertinib monotherapy after platinum-based chemotherapy (PBC).
Patients And Methods: This retrospective longitudinal cohort study pooled electronic health records from the Flatiron Health (January 2011-August 2022), Ontada (January 2013-January 2023), and COTA (January 2010-December 2022) databases. Patients (≥20 years) with advanced or metastatic EGFR exon20ins NSCLC who received amivantamab or mobocertinib following PBC were included. Patient characteristics and treatment patterns were analyzed descriptively. Time to next treatment or death (TTNTD) and time to discontinuation (TTD) were assessed using Kaplan-Meier estimates.
Results: 44 patients treated with amivantamab and 24 patients with mobocertinib after PBC met the selection criteria. Patient characteristics were consistent with previous studies. Most patients received amivantamab or mobocertinib as second-line (57 % and 50 %) or third-line (32 % and 33 %) therapy. The median TTNTD was 9.2 months for amivantamab and 4.2 months for mobocertinib. Fewer patients in the amivantamab cohort (43 %) experienced a TTNTD event than the mobocertinib cohort (63 %). The median TTD was 8.6 months for amivantamab and 2.3 months for mobocertinib, with a lower discontinuation rate in the amivantamab cohort (46 % vs 67 %).
Conclusion: Real-world patients with EGFR exon20ins NSCLC treated with amivantamab after PBC experienced median TTNTD and TTD consistent with the median progression-free survival observed in its registrational trial while patients treated with mobocertinib exhibited faster disease progression and a higher frequency of treatment discontinuation.
Microabstract: This retrospective study described patient characteristics, treatment patterns, and outcomes in patients with EGFR exon20ins-mutated advanced or metastatic NSCLC who received amivantamab or mobocertinib monotherapy after platinum-based chemotherapy. Real-world patients treated with amivantamab experienced TTNTD and TTD consistent with the median progression-free survival observed in its registrational trial, while patients treated with mobocertinib exhibited faster disease progression and a higher frequency of treatment discontinuation.
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Real-world treatment patterns of patients with EGFR exon 20 insertion-mutated advanced NSCLC treated with amivantamab or mobocertinib after platinum-based chemotherapy: A multi-database cohort study.
Cancer Treat Res Commun
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Janssen Scientific Affairs, LLC, a Johnson & Johnson Company, Horsham, PA, United States.
Objective: To describe characteristics, treatment patterns, and outcomes of patients with EGFR exon 20 insertion (exon20ins)-positive advanced or metastatic non-small cell lung cancer (NSCLC) who received amivantamab or mobocertinib monotherapy after platinum-based chemotherapy (PBC).
Patients And Methods: This retrospective longitudinal cohort study pooled electronic health records from the Flatiron Health (January 2011-August 2022), Ontada (January 2013-January 2023), and COTA (January 2010-December 2022) databases. Patients (≥20 years) with advanced or metastatic EGFR exon20ins NSCLC who received amivantamab or mobocertinib following PBC were included.
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Department of Pharmacy, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang, Sichuan, China.
Background: Amivantamab has been approved for EGFR exon 20 insertion-mutated non-small-cell lung cancer. The aim of this study was to perform an in-depth analysis of its safety profile.
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A real‑world study of clinical characteristics, treatment sequence and outcomes of patients with non-small cell lung cancer and EGFR exon 20 insertion mutations.
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Medical Oncology Department, Biomarker and Precision Medicine Unit, La Fe University and Polytechnic Hospital, Valencia, Spain.
Objectives: EGFR exon 20 insertion (EGFRex20ins) mutations are found in up to 4% of all patients with non-small cell lung cancer (NSCLC). These patients are often insensitive to EGFR-tyrosine kinase inhibitors (TKIs) and have worse prognosis than patients with more common EGFR mutations. In this multicenter, retrospective, real-world study, we sought to determine whether the administration of recently approved treatments that specifically target EGFRex20ins mutations could significantly improve outcomes in this patient population.
View Article and Find Full Text PDF[EGFR Exon 20 Insertion Mutation: Research Status and New Treatment Strategies].
Zhongguo Fei Ai Za Zhi
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Department of Respiratory, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, Taiyuan 030013, China.
In non-small cell lung cancer (NSCLC), as an improtant oncogenic driver gene, epidermal growth factor receptor exon 20 insertion (EGFR ex20ins) has a unique protein structure and is primarily drug-resistant to traditional EGFR-tyrosine kinase inhibitors (EGFR-TKIs). In recent years, exploration of targeted therapy for EGFR ex20ins has never stopped. Firstly Mobocertinib and Amivantamab obtained approval from U.
View Article and Find Full Text PDFResistance mechanisms of EGFR tyrosine kinase inhibitors, in EGFR exon 20 insertion-mutant lung cancer.
Eur J Cancer
September 2024
Seoul National University Cancer Research Institute, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea.
Background: Mobocertinib, an EGFR exon 20 insertion (Ex20ins)-specific tyrosine kinase inhibitor has been used for treatment of advanced/metastatic EGFR Ex20ins-mutant non-small cell lung cancer (NSCLC). However, resistance mechanisms to EGFR Ex20ins-specific inhibitors and the efficacy of subsequent amivantamab treatment is unknown.
Methods: To investigate resistance mechanisms, tissue and cfDNA samples were collected before treatment initiation and upon development of resistance from NSCLC patients with EGFR Ex20ins mutations received mobocertinib, poziotinib, and amivantamab treatments.