Effect of epidermal growth factor receptor gene mutation on the prognosis of pathological stage II–IIIA (8th edition TNM classification) primary lung cancer after curative surgery

•The 5-year OS rate of EGFR-Mt patients with p-stage II was 92.0%.•The 5-year OS rate of EGFR-Mt patients with p-stage IIIA was 56.0%.•The OS of EGFR-Mt patients was more favorable than that of EGFR-Wt patients.•EGFR mutation was a favorable prognostic factor for OS of stage II patients.•Incorporati...

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