Importantly, the rates of positive PD-L1 expression (TPS ≥1%) in both EBUS-TBNA and matched TBB specimens obtained from NSCLC patients were significantly higher than those obtained from SCLC specimens (48.0% vs. 10.5%, p = 0.006) as shown in Figure 4A and 4B. Here, CD274 is linked to non-small cell lung carcinoma.