Moreover, in the TCGA RNA-seq dataset of 35 cancer types, we observed significant correlations between the transcript levels of CD3E and LCK (Figure S6A, pan-cancer rho=0.89), and the CD19 and CD20 (Figure S6B, pan-cancer rho=0.70) across different cancer types, indicating LCK and CD20 as specific cell markers for the T and B cells. This evidence concerns the gene CD19 and cancer.