It is widely known that the polymorphisms in deregulation of IL8 gene render humans susceptible to inflammatory diseases (rheumatoid arthritis, inflammatory bowel diseases), cancer and visceral leishmaniasis11–15; however, in current study we, for the first time, associated the deregulation of the IL8 gene with the survival of the patients with gastric and lung cancer on the basis of the results from Kaplan-Meier Plot analysis. This evidence concerns the gene CXCL8 and rheumatoid arthritis.