Survival curves between groups A and B in undifferentiated gastric cancer (4a), AGC (4b), and N+ cancer (4c). Group A indicates the positive expression group in which ≥ 3 proteins among membranous type MUC13m, CDH17, LGALS4 and REG4 were expressed. Group B indicates the expression loss group in which ≤ 2 proteins among membranous type MUC13, CDH17, LGALS4 and REG4 were expressed. AGC indicates gastric cancer with ≥ T2 stage. N+ indicates gastric cancer with ≥ N1 stage.