We analyzed the correlation of MTA2 with relevant immune cells (B cells, CD4 T cells, CD8 T cells, Neutrophils, Macrophages, and DCs) in pan-cancer and demonstrated that TCGA-LIHC (B cells: cor = 0.38, p < 0.0001; CD4 T cells: cor = 0.38, p < 0.0001; CD8 T cells: cor = 0.25, p < 0.0001; Neutrophils: cor = 0.54, p < 0.0001; Macrophages: cor = 0.45, p < 0.0001; DCs: cor = 0.51, p < 0.0001) had the strongest correlation with immune cells. This evidence concerns the gene CD4 and cancer.