EGFR and non-small cell lung carcinoma: In this cohort study including 723 patients with EGFR-positive or wildtype EGFR NSCLC, 2-year disease-free survival of patients with EGFR-positive NSCLC was 81% for stage IA, 78% for stage IB, 57% for stage II and 47% for stage IIIA; overall, 5-year disease-free survival among patients with stage IB to IIIA was 37%.