While no correlation was shown between c-Met tumor protein levels and circulating chemokines/cytokines, a very significant positive correlation was observed between its ligand HGF and CXCL11 (p < 0.0001), CXCL10 (p < 0.01) and IL-6 (p < 0.0001) (Figure 6A–C). This evidence concerns the gene IL6 and neoplasm.