IL1B and chronic gastritis: Carriers of the proinflammatory IL-1B-511*T allele (both IL-1B-511T homozygotes and IL-1B-511 heterozygotes) had also no increased risk for gastric cancer (OR = 1.570; 95% CI: 0.644–3.825) or chronic gastritis (OR = 0.480; 95% CI: 0.232–0.996).