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Helicobacter pylori eradication and gastric cancer prevention in a pooled analysis of large-scale cohort studies in Japan
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Helicobacter pylori eradication and gastric cancer prevention in a pooled analysis of large-scale cohort studies in Japan
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Journal Article
Helicobacter pylori eradication and gastric cancer prevention in a pooled analysis of large-scale cohort studies in Japan
2025
Overview
Helicobacter pylori
(
H. pylori)
infection is an established cause of gastric cancer. Although
H. pylori
eradication is suggested to decrease gastric cancer risk, this has not been fully investigated in general populations. This analysis included 48,530 Japanese men and women aged 40–74 years from four cohort studies. At baseline, the participants provided a self-reported eradication history and serum anti-
H. pylori
IgG titers and the results of a pepsinogen (PG) test. We examined the association between eradication history and gastric cancer risk considering
H. pylori
positivity and PG testing using Cox proportional hazards regression models. From 2010 to 2018, 649 gastric cancer cases were diagnosed. Compared with those who were negative for both
H. pylori
and PG test as a reference, gastric cancer risk was 5.89 times higher (95%CI: 4.41–7.87) in those who were
H. pylori
-positive and/or PG test-positive and with no eradication at baseline. Gastric cancer risk among those who underwent eradication before baseline decreased after a temporal increase in risk following eradication (baseline to < 1y: HR 1.74, 95%CI 1.18–2.57; 1y to < 6y: HR 0.81, 95%CI 0.59–1.11; ≥ 6y: HR 0.44, 95%CI 0.28–0.68). In this large Japanese general population,
H. pylori
eradication was associated with a long-term reduction in gastric cancer incidence.
Publisher
Nature Publishing Group UK,Nature Portfolio
Subject
/ 692/499
/ Adult
/ Aged
/ Anti-Bacterial Agents - therapeutic use
/ Antibodies, Bacterial - blood
/ Female
/ Helicobacter Infections - complications
/ Helicobacter Infections - drug therapy
/ Helicobacter Infections - epidemiology
/ Helicobacter Infections - microbiology
/ Helicobacter pylori - drug effects
/ Humanities and Social Sciences
/ Humans
/ Japan
/ Male
/ Science
/ Stomach Neoplasms - epidemiology
