Matched-pair analysis of a multi-institutional cohort reveals that epidermal growth factor receptor mutation is not a risk factor for postoperative recurrence of lung adenocarcinoma

Yuki Matsumura, Hiroyuki Suzuki, Tetsuya Ohira, Satoshi Shiono, Jiro Abe, Motoyasu Sagawa, Akira Sakurada, Masato Katahira, Yuichiro Machida, Satomi Takahashi, Yoshinori Okada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective It is unclear whether epidermal growth factor receptor (EGFR) mutation status is a risk factor for postoperative recurrence of surgically resected lung adenocarcinoma (ADC). Therefore, we conducted a multi-institutional study employing matched-pair analysis to compare recurrence-free survival (RFS) and overall survival (OS) of patients with lung ADC according to EGFR mutation status. Methods We collected the records of 909 patients who underwent surgical resection for lung ADC between 2005 and 2012 at five participating institutions and were also examined their EGFR mutation status. For each patient with an EGFR mutation, we selected one with the wild-type EGFR sequence and matched them according to institution, age, gender, smoking history, pathological stage (pStage), and adjuvant treatment. We compared RFS and OS of the matched cohort. Results The patients were allocated into groups (n = 181 each) with mutated or wild-type EGFR sequences. Both cohorts had identical characteristics as follows: institution, median age (68 years), men (85, 47%), ever smokers (77, 43%), and pStage (IA, 108, 60%; IB, 48, 27%; II, 14, 8%; III, 11, 6%). The 3- and 5-year RFS rates of patients with mutated or wild-type EGFR sequence were 79%, 68% and 77%, 68%, respectively (p = 0.557). The respective OS rates were 92%, 81%, and 89%, 79% (p = 0.574). Conclusion Matched-pair and multi-institutional analysis reveals that an EGFR mutation was not a significant risk factor for recurrence of patients with surgically resected lung adenocarcinoma.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalLung Cancer
Volume114
DOIs
Publication statusPublished - 2017 Dec

Keywords

  • Epidermal growth factor receptor mutation
  • Lung adenocarcinoma
  • Recurrence factor
  • Surgery

ASJC Scopus subject areas

  • Oncology
  • Pulmonary and Respiratory Medicine
  • Cancer Research

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