The subset Fisher’s analysis for tumor markers yielded no association in any of the CT/TT, CC/TT, and C/T genetic models with no significant variations among CEA and Ca19.9 Positive/Negative and control subpopulations; however, in the logarithmic transformations, CT/TT was significantly correlated with CEA (log-OR: 2.14, p = 0.013, Figure 4, Table 7). This evidence concerns the gene CEACAM5 and neoplasm.