Finally, we evaluated the association between these four genes expression and CD8+ T cell infiltration in the other thirty-six kinds of tumors by pan-cancer analysis and found that PTPN12, KDELR2, P2RX4 and IDH2 were associated with CD8+ T cell infiltration in eight, four, two and one tumor types, respectively. This evidence concerns the gene KDELR2 and neoplasm.