CD274 and neoplasm: The results indicated that the mRNA expression levels of BCLAF1 were positively correlated with PD-L1 (CD274) (Fig. 2a), and consistent findings were obtained using Tumor Immune Estimation Resource (TIMER) database (Fig. 2b) and Gene Expression Profiling Interactive Analysis (GEPIA) database (Fig. 2c) based on TCGA analysis.