Two clinical variables, histological type (p = 0.040) and anatomic neoplasm subdivision (p = 0.039), were significantly related to the expression levels of the DLL1 gene, and two clinical variables, DSS event (p = 0.039) and PFI event (p = 0.013), were statistically significantly related to the expression levels of the DLL3 gene. This evidence concerns the gene DLL1 and neoplasm.