Epidermal Growth Factor Receptor Mutation Status and Treatment Outcome for R0-Resected Patients with Stage 3 Non-small Cell Lung Cancer

Annals of Surgical Oncology
Song Ran LiuHui Liu

Abstract

This study aimed to investigate the association of epidermal growth factor receptor (EGFR) mutation status with treatment outcome for patients with stage 3 non-small cell lung cancer (NSCLC) who had undergone a complete (R0) resection. The study identified 3445 NSCLC patients tested for EGFR mutations between September 2001 and December 2011 at the Sun Yat-Sen University Cancer Center. Of these patients, 224 were stage 3 patients who had undergone R0 resections. These 224 R0-resected, pathologic stage 3A and 3B patients included 150 patients with wild-type EGFR and 74 patients with EGFR mutations. During a median follow-up period of 42 months (range, 4-133 months), pathologic stage was shown to be the only prognostic factor. The 3-year overall survival (OS) rates did not differ significantly from the OS rates for the wild-type and mutant EGFR groups (62.0 vs 67.2 %; p = 0.789). Multivariate analyses indicated that the patients in the mutant EGFR group with EGFR exon 19 mutations had a better OS rate (73.0 vs 61.1 %; p = 0.026). Cancer stage remained the significant prognostic factor in R0-resected stage 3 NSCLC patients. The presence of an EGFR mutation is more likely to be a predictive marker for the response to treatment with...Continue Reading

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