Gastric cancer(GC)remains a leading cause of cancer mortality worldwide1.Helicobacter pylori(H.pylori)infection is the dominant etiologic factor2,yet GC also arises in individuals without infection or after eradicatio...Gastric cancer(GC)remains a leading cause of cancer mortality worldwide1.Helicobacter pylori(H.pylori)infection is the dominant etiologic factor2,yet GC also arises in individuals without infection or after eradication,suggesting alternative carcinogenic pathways3.Accordingly,increasing attention has been paid to potential differences between H.pylori-negative and-positive GC.Clinicopathologic differences by H.pylori infection status have been reported but most evidence derives from case-control studies in which infection status assessed at diagnosis is prone to misclassification due to prior eradication,spontaneous clearance,or tumor-related changes.As a result,prospective data defining the long-term clinical and biological imprint of baseline H.pylori status are limited.展开更多
基金funded by Beijing Hospitals Authority Clinical Medicine Development of Special Funding Support(No.ZLRK202325)the Noncommunicable Chronic Diseases National Science and Technology Major Project(Nos.2023ZD0501400,2025ZD0545200)+6 种基金Capital’s Funds for Health Improvement and Research(No.2026-1Q-1091)National Natural Science Foundation of China(Nos82172555,82273704,and 82504482)Beijing Hospitals Authority’s Ascent Plan(DFL20241102)China Postdoctoral Science Foundation(2024M760152)Postdoctoral Fellowship Program of CPSF(GZB20250192)Peking University Medicine Fund for World’s Leading Discipline or Discipline Cluster Development(No.BMU2022XKQ004)Science Foundation of Peking University Cancer Hospital(Nos.BJCH2024BJ02,XKFZ2410,and BJCH2025CZ04)。
摘要Gastric cancer(GC)remains a leading cause of cancer mortality worldwide1.Helicobacter pylori(H.pylori)infection is the dominant etiologic factor2,yet GC also arises in individuals without infection or after eradication,suggesting alternative carcinogenic pathways3.Accordingly,increasing attention has been paid to potential differences between H.pylori-negative and-positive GC.Clinicopathologic differences by H.pylori infection status have been reported but most evidence derives from case-control studies in which infection status assessed at diagnosis is prone to misclassification due to prior eradication,spontaneous clearance,or tumor-related changes.As a result,prospective data defining the long-term clinical and biological imprint of baseline H.pylori status are limited.