EGFR and metastatic neoplasm: Data were missing for 1 patient for the stage; 2 for the EGFR and ALK; 4 for the treatment duration; 5 for the brain status; 7 for the tyrosine kinase inhibitors use, mediastinal lymph nodes, and therapy after nivolumab; 8 for the lung, liver status, and the number of cycles; 10 for the chemotherapy of metastatic disease, bone status, pleural effusion status, pleural metastasis status, and abdominal lymph nodes status; and 15 for the number of metastatic sites.