The results showed that DOCK4, C3, ENG, and CXCL3 were highly expressed in patients with TCGA-STAD tumours, whereas IFFO1, RASSF2, CELF2, PLEKHO1, EMP3, S1PR1, RHOB, FBLN5, and CASP1were highly expressed in healthy individuals (Figure 8A). This evidence concerns the gene C3 and neoplasm.