HP and gastric cancer: Serial researches are conducted under the Sichuan Gastric Cancer Early Detection and Screening project to provide information for the tailored screening of gastric cancer in Sichuan province, even in Southwest China.[17,18,23,24] For example, the prevalence of Hp was quite high up to >80% among Tibetans in decades ago,[8] but the epidemiologic changes and status in recent years might be informative to design the Hp screening and eradication protocol in Tibetans.