CD274 and non-small cell lung carcinoma: To address the eventual existence of additional PD-L1 CpG sites with methylation levels correlating with the mRNA expression observed in NSCLC, we screened a previously generated dataset including genome-wide information on DNA methylation (Infinium MethylationEPIC 850K array) and mRNA expression (RNA-sequencing) from a group of five isogenic HCC827 cell clones [49].