Figure 2.

Factors impacting PD-L1 expression and its TPS value. PD-L1 TPS values according to (A) sample location, (B) clinical stage, (C) histological subtypes and (D) mutation number. Only significant pairwise differences were indicated (using Mann-Whitney test in B; Dunn's multiple comparisons post hoc test in A, C and D for which Kruskal-Wallis P-values are provided in Table III). ADC, adenocarcinoma; LN, Lymph Nodes Metastasis; NOS, non-otherwise specified; PD-L1, programmed death-ligand 1; St, clinical stage; TPS, Tumor Proportion Score.