EGF and esophageal squamous cell carcinoma: Even though EGF:rs4444903, EGF:rs2237051 and VEGF:rs2010963 were each significantly associated with a better prognosis of advanced ESCC, we found the cumulative effect of VEGF:rs2010963 with either EGF:rs4444903 or EGF:rs2010963 to be even better than the cumulative effect of these 3 SNPs combined (Table 4).