CD274 and non-small cell lung carcinoma: Among the NSCLC patients, 2 patients (8%) were diagnosed with squamous cell NSCLC; 4 patients (17%) were stage III; 7 patients (29%) were tested and found to have EGFR mutations; 4 patients (17%) were PD-L1 positive; 4 patients (17%) were Hepatitis B virus carriers, and 6 patients (25%) received the first or second line treatment.