IL17A and cancer: The inconsistent findings obtained in gastric cancer regarding the existence of pro- and anti-cancer activities of IL-17 may be attributed to the research population, H. pylori infection, the treatment received, the cellular source of IL-17, and the inflammatory background of the TME, and individualized and fine-tuned in-depth studies are needed to clarify the specific mechanism of its action in gastric cancer and to conduct further studies to develop IL-17-targeted anticancer strategies against IL-17.