Figure 2

Kaplan-Meier curves for progression-free survival (PFS) and overall survival (OS) by combined analysis of epidermal growth factor receptor (EGFR) mutation status and EGFR in fluorescent situ hybridization (FISH) status. (A) and (B), PFS and OS for FISH status in the subgroup of patients with EGFR mutations; (C) and (D), PFS and OS for FISH status in the subgroup of patients with wild-type EGFR; (E) and (F), PFS and OS for double-positive, double-negative, and single-positive EGFR mutations and FISH.