Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Kaplan-Meier curves for PFS according to the PD-L1 expression level and EGFR mutation status in patients treated with (A) osimertinib or (B) first- and second-generation EGFR-TKIs. EGFR-TKIs, epidermal growth factor receptor-tyrosine kinase inhibitors; PD-L1, programmed death ligand-1; PFS, progression-free survival.
