Among the patients with EGFR mutations, shorter progression-free survival (PFS) was observed in SCC compared to adenocarcinoma (4.6 vs. 11.0 months, P<0.001)…Further exploration of EGFR-mutant SCC revealed that mutations in CREBBP (P=0.005), ZNF217 (P=0.016), and the Wnt (P=0.027) pathway were negatively associated with PFS.