The meta-analysis of Camargo et al. [22], including 14 studies, suggested as appropriate the dominant genetic model, and showed a non-significantly increased risk of gastric cancer for those carrying C variant allele of IL-1B -31 compared with those wild-type homozygotes (OR = 1.04, 95%CI: 0.83-1.29; p for heterogeneity <0.001). The gene discussed is IL1B; the disease is gastric cancer.