Further examination of the HPA database suggested the overrepresentation of genes with prognostic value for five-year survival or genes with elevated expression, specifically in pancreatic cancer, among our PDAC-associated marker genes (Figure 3B,C), including such genes as HDAC4, Rab1, and FIP3, which are known to be related to PDAC pathobiology and/or metastasis [29,30]. Here, HDAC4 is linked to pancreatic neoplasm.