In samples in which the tumor invaded beyond the serosa, the association with KRAS Q61 mutation decreased: OR = 1.630 (95% CI = [0.444, 5.984]) and RR2 = 1.395 (95% CI = [0.961, 1.827]), but the association with EGFR mutation presence increased RR2 = 3.003 (95% CI = [2.901, 3.105]). The gene discussed is EGFR; the disease is neoplasm.