Significantly, the activities of Priming and activation, B cell recruiting, Basophil recruiting, CD4 T cell recruiting, dendritic cell recruiting, Eosinophil recruiting, Macrophage recruiting, Neutrophil recruiting, T cell recruiting, Th17 cell recruiting, Infiltration of immune cells into tumors, Recognition of cancer cells by T cells, and Killing of cancer cells were significantly higher in PDAC samples with high IL2RA (Fig. 7A). This evidence concerns the gene CD4 and cancer.