Data in Figure 1 show that IL-33 is overexpressed in gastritis H.pylori-negative samples (HC 0.15 ± 0.03 vs. G Hp− 1.75 ± 0.61; p < 0.05) and even more expressed in H.pylori-positive gastritis (HC 0.15 ± 0.03 vs. G Hp+ 2.26 ± 0.74; p < 0.05). Here, HP is linked to gastritis.