CONSORT diagram of the study. *: The EGFRm and EGFR/ALK WT cohort have been reported in our previous work [17].
Abbreviations: ADC, adenocarcinoma; ALK, anaplastic lymphoma kinase; EGFR, epidermal growth factor receptor; IHC; immunohistochemistry; NTUH, National Taiwan University Hospital; PD‐L1, programmed death‐ligand 1; RT‐PCR, reverse transcriptase‐polymerase chain reaction; TKI, tyrosine kinase inhibitor; WT, wild type.