TFF1 and gastric cancer: In patients with gastric cancer, the mean serum TFF1 concentration was 1.30 ± 0.15 ng/ml (95% CI [1.01, 1.59]), while in CAG, CNAG, and the healthy group it was 1.07 ± 0.14 ng/ml (95% CI [0.77, 1.35]), 0.70 ± 0.08 ng/ml (95% CI [0.53, 0.87]), and 0.72 ± 0.07 ng/ml (95% CI [0.58, 0.86]), respectively.