Furthermore, the ssGSEA results of TCGA-PAAD further indicated that the low-risk group possessed a higher abundance of “CD8 T.cells,” “T.cells.gamma.delta,” “NK.cells.activated,” “Dendritic.cells.activated,” “Monocytes,” “Macrophages.M1,” and “Macrophages.M2” than the high-risk group (Figure 8(a)), confirming different immune infiltrating patterns between the acidosis-related risk groups. The gene discussed is CD8A; the disease is Acidosis.