Although the incidence of gastric cancer has been declining spontaneously and steadily for over 50 years, stomach cancer remains common. The World Health Organization’s 2020 annual report indicates a global incidence of gastric cancer estimated at 1,089,103 new cases per year, representing 5.6% of all cancers, with a mortality rate of approximately 768,793 deaths per year, accounting for 7.7% of all cancer deaths and ranking gastric cancer third in cancer mortality worldwide.