CEACAM5 and gastric cancer: Among 98 patients with gastric cancer, 25 had positive Her-2 expression, accounting for 25.5%; 35 had positive CEA expression, accounting for 35.71%; 27 had positive CA724 expression, accounting for 27.55%; 15 had positive CA242 expression, accounting for 15.31%; and 22 had positive CA199 expression, accounting for 22.45%.