CD8A and pancreatic adenocarcinoma: In PAAD, SLC25A1 expression has a significant positive correlation with the immune infiltrating levels of CD4 + T cells (R = 0.221, P = 3.75e-03) but negative correlation with the infiltrating levels of CD8 + T cells(R = − 0.25, P = 9.98e-04), neutrophils (R = − 0.242, P = 1.40e-03) and myeloid dendritic cells (R = − 0.228, P = 2.74e-03).