The result demonstrated significantly positive correlation of MUC1 and TFF2 expression among GC patients with H. pylori infection but not for those without infection (total: r = 0.287, P = 0.028; H. pylori negative: r = 0.196, P = 0.318; H. pylori positive: r = 0.382, P = 0.034; Fig. 2c–e). This evidence concerns the gene MUC1 and infection.