In addition, ptpn6 expression was significantly correlated with infiltrating levels of B cell in 27 types of cancers, CD8 + T cells in 19 types of cancer, CD4 + T cells in 26 types of cancer, macrophages in 21 types of cancer, neutrophils in 23 types of cancer, and dendritic cells in 29 types of cancer (Table S1). This evidence concerns the gene CD8A and cancer.