As for the relationship between the expression of PD-L1 and the characteristics of patients with lung adenocarcinoma (n = 106), we did not find a significant correlation between the percentage of CD34+ PD-L1+ vessels and any clinical variables, even though P value is closed to significant point (0.066) in T stage (Fig. 1c and Table S1). This evidence concerns the gene CD274 and lung adenocarcinoma.