In this previous studies, patients from a Chinese Han population who had the genotype AG/AA of IL-17F A7488G (His161Arg, rs763780) gene SNP were more susceptible to acquiring tuberculosis, compared to the GG genotype [18], whereas in other studies of the China population it was verified that the IL-17F A7488G (His161Arg, rs763780) gene SNP was associated with risk of gastric cancer and GA genotype was associated with the clinic-pathological features and not with the risk of gastric cancer itself. This evidence concerns the gene IL17F and gastric cancer.