In a database of 674 glioma human samples, mRNA levels of PD-L1(i.e., CD274) were significantly positively correlated to those of PI3K (i.e., PI3KCG) and β-actin (i.e., ACTB) (Figures 2F,H), supporting our RNA-sequencing data. The gene discussed is PIK3CG; the disease is central nervous system cancer.