Prognostic Impact of Postoperative Recurrence in Patients With Epidermal Growth Factor Receptor–Positive Non‐Small Cell Lung Cancer

• Published in: Cancer reports Vol. 7; no. 9; pp. e70004 - n/a
• Main Authors: Morita, Meiko, Ono, Akira, Sekikawa, Motoki, Doshita, Kosei, Miura, Keita, Kodama, Hiroaki, Yabe, Michitoshi, Morikawa, Noboru, Iida, Yuko, Mamesaya, Nobuaki, Kobayashi, Haruki, Ko, Ryo, Wakuda, Kazushige, Kenmotsu, Hirotsugu, Naito, Tateaki, Murakami, Haruyasu, Isaka, Mitsuhiro, Ohde, Yasuhisa, Takahashi, Toshiaki
• Format: Journal Article
• Language: English
• Published: United States John Wiley and Sons Inc 01.09.2024; Wiley
• Subjects: Adult; Aged; Aged, 80 and over; Carcinoma, Non-Small-Cell Lung - genetics; Carcinoma, Non-Small-Cell Lung - mortality; Carcinoma, Non-Small-Cell Lung - pathology; Carcinoma, Non-Small-Cell Lung - surgery; EGFR; ErbB Receptors - genetics; Female; Humans; Lung Neoplasms - genetics; Lung Neoplasms - mortality; Lung Neoplasms - pathology; Lung Neoplasms - surgery; Male; Middle Aged; Mutation; Neoplasm Recurrence, Local - epidemiology; Neoplasm Recurrence, Local - genetics; Neoplasm Recurrence, Local - pathology; non‐small cell lung cancer; oligometastasis; Original; Pneumonectomy; postoperative recurrence; Prognosis; prognostic factors; Retrospective Studies; oligometastasis; prognostic factors; EGFR; non‐small cell lung cancer; postoperative recurrence
• ISSN: 2573-8348; 2573-8348
• DOI: 10.1002/cnr2.70004

ABSTRACT Background Mutations in the epidermal growth factor receptor (EGFR) gene are the most common targetable gene alterations in non‐small cell lung cancer (NSCLC). In Japan, approximately 40% of patients who undergo surgical resection for non‐squamous NSCLC have EGFR mutations. However, no long‐term studies have been conducted including a large number of EGFR‐positive NSCLC patients with postoperative recurrence (PR). Methods We conducted a retrospective observational study of the data of EGFR‐positive NSCLC patients with PR who had undergone surgery at the Shizuoka Cancer Center between October 2002 and November 2017. We evaluated post‐recurrence overall survival (PRS) and postoperative overall survival (POS) using the Kaplan–Meier method and identify any associations between the clinical variables at recurrence and PRS using univariate and multivariate analysis. Results We enrolled 162 patients. The median observation time for PRS was 4.95 years (range, 0.82–13.25) and POS was 5.81 years (range, 2.84–16.71). The median PRS was 5.17 years (95% confidence interval [CI], 3.90–5.61) and POS was 7.07 years (95% CI, 5.88–8.01). Univariate analysis identified male sex (median PRS: 3.32 vs. 5.39 years; p < 0.05), bone metastasis (median PRS: 2.43 vs. 5.33 years; p < 0.05), and central nervous system (CNS) metastasis (median PRS: 3.05 vs. 5.39 years; p < 0.05) and multivariate analysis identified bone metastasis (hazard ratio [HR], 2.01; 95% CI, 1.23–3.28; p < 0.05) and CNS metastasis (HR, 1.84; 95% CI, 1.14–2.98; p < 0.05) as poor prognostic factors. The pattern of recurrence (oligo vs. non‐oligo recurrence) was not a prognostic factor. Logistic regression analysis revealed the association between sex and the presence bone/CNS metastasis at recurrence. Conclusion Our data may help visualize future prospects and determine the timing of osimertinib initiation. New treatment strategies need to be developed for patients with bone/CNS metastasis at the first recurrence.