Tyrosine Kinase Inhibitor Activity in Patients with NSCLC Harboring Uncommon EGFR Mutations: A Retrospective International Cohort Study (UpSwinG).
Abstract | BACKGROUND: PATIENTS AND METHODS: In this retrospective, global, multi-center study (NCT04179890), existing health records were identified for consecutive EGFR TKI-naïve patients with uncommon EGFR mutations (T790M, ex20ins, major uncommon [G719X, L861Q, or S768I], or "other" mutations; compound mutations) treated with erlotinib, gefitinib, afatinib, or osimertinib in first or second line. Endpoints included time-to-treatment failure (TTF), objective response rate (ORR), and overall survival (OS). RESULTS: Overall, 246 patients (median age: 69.5 years; Asian: 84%) were included from 9 countries. Most patients (92%) received an EGFR TKI as first-line therapy; 54%, 43% and 3% received afatinib, first-generation TKIs, and osimertinib, respectively. Median TTF and OS with EGFR TKIs were 9.9 and 24.4 months; ORR was 43%. In patients treated with first-line chemotherapy (n = 20), median TTF and ORR were 6.6 months and 41%. Outcomes were most favorable in patients with major uncommon or compound mutations. Overall, TTF was 11.3 months with afatinib and 8.8 months with first-generation EGFR TKIs across mutation categories. In most mutation categories, median OS was >2 years. CONCLUSION: In a real-world setting, EGFR TKIs were the preferred treatment option in patients with uncommon EGFR mutations; strongest outcomes were seen in patients with major uncommon and compound mutations.
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Authors | Sanjay Popat, Te-Chun Hsia, Jen-Yu Hung, Hyun Ae Jung, Jin-Yuan Shih, Cheol Kyu Park, Seung Hyeun Lee, Tatsuro Okamoto, Hee Kyung Ahn, Yong Chul Lee, Yuki Sato, Sung Sook Lee, Celine Mascaux, Hasan Daoud, Angela Märten, Satoru Miura |
Journal | The oncologist
(Oncologist)
Vol. 27
Issue 4
Pg. 255-265
(04 05 2022)
ISSN: 1549-490X [Electronic] England |
PMID | 35274704
(Publication Type: Journal Article, Multicenter Study, Research Support, Non-U.S. Gov't)
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Copyright | © The Author(s) 2022. Published by Oxford University Press. |
Chemical References |
- Protein Kinase Inhibitors
- EGFR protein, human
- ErbB Receptors
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Topics |
- Aged
- Carcinoma, Non-Small-Cell Lung
(drug therapy, genetics, pathology)
- Cohort Studies
- ErbB Receptors
- Humans
- Lung Neoplasms
(drug therapy, genetics, pathology)
- Mutation
- Protein Kinase Inhibitors
(pharmacology, therapeutic use)
- Retrospective Studies
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