These include some of the tumor associated proteins with differential levels in both stage IIIA and IVB such as alkaline phosphatase, tissue-nonspecific isozyme isoform 1 preproprotein (ALPL), dipeptidyl peptidase 4 isoform X1 (DPP4), protein TFG isoform X2 (TFG) (Table 2, Supplementary Table S3). This evidence concerns the gene DPP4 and neoplasm.