A real-world study comparing perioperative chemotherapy and EGFR-tyrosine kinase inhibitors for treatment of resected stage III EGFR-mutant adenocarcinoma

Author:

Chen Chieh-Lung,Wang Sing-Ting,Liao Wei-Chih,Chen Chia-Hung,Tu Chih-Yen,Hsia Te-Chun,Cheng Wen-Chien,Chen Hung-Jen

Abstract

Abstract Background The patient population with stage III non-small-cell lung cancer (NSCLC) is heterogeneous, with varying staging characteristics and diverse treatment options. Despite the potential practice-changing implications of randomized controlled trials evaluating the efficacy of perioperative epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs), concerns have been raised due to conflicting overall survival (OS) results. Few real-world studies have examined the survival outcomes of patients with resected EGFR-mutant stage III adenocarcinoma receiving perioperative chemotherapy and EGFR–TKIs. Methods In this retrospective observational study, we enrolled patients with resected stage III adenocarcinoma with EGFR mutations between January 2011 and December 2021. Patients were classified into two groups: perioperative chemotherapy and perioperative EGFR–TKIs. Outcomes and prognostic factors were analyzed using Cox proportional hazards regression analysis. Results Eighty-four patients were enrolled in the analysis. Perioperative EGFR-TKIs led to longer progression-free survival (PFS) than chemotherapy (38.6 versus 14.2 months; p = 0.019). However, only pathological risk factors predicted poor PFS in multivariate analysis. Patients receiving perioperative chemotherapy had longer OS than those receiving EGFR-TKIs (111.3 versus 50.2 months; p = 0.052). Multivariate analysis identified perioperative treatment with EGFR-TKIs as an independent predictor of poor OS (HR: 3.76; 95% CI: 1.22–11.54). Conclusion Our study demonstrates that chemotherapy should be considered in the perioperative setting for high-risk patients, when taking pathological risk factors into consideration, and that optimized sequencing of EGFR–TKIs might be the most critical determinant of OS.

Publisher

Springer Science and Business Media LLC

Subject

Cancer Research,Genetics,Oncology

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