Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2019
High-Negative Anti-Helicobacter pylori IgG Antibody Titers and Long-Term Risk of Gastric Cancer: Results from a Large-Scale Population-Based Cohort Study in Japan.
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Inoue Manami, Sawada Norie, Goto Atsushi, Shimazu Taichi, Yamaji Taiki, Iwasaki Motoki, Tsugane Shoichiro, JPHC Study Group
Аннотация
BACKGROUND: Serologic testing of anti-Helicobacter pylori antibody, together with testing of pepsinogen I and II, is now widely used to stratify groups at high risk of gastric cancer in Japan. Those with a negative anti-H. pylori IgG titer, especially "high-negative" (3-<10 U/mL), are speculated to have higher risk of gastric cancer. We aimed to evaluate the association between a high-negative anti-H. pylori IgG titer and the long-term risk of gastric cancer in the Japan Public Health Center-based Prospective Study (JPHC Study) Cohort II.
METHODS: The study population consisted of 19,106 Japanese men and women who were followed from 1993 to 2013. A Cox proportional hazards model was used to assess the risk of gastric cancer for plasma anti-H. pylori IgG titers, together with the severity of atrophic gastritis by pepsinogen I and II levels. A total of 595 cases of gastric cancer occurred during an average of 18 years of follow-up.
RESULTS: Compared with those with a low-negative anti-H. pylori IgG titer (≤3 U/mL), subjects with a high-negative titer (3-<10 U/mL) showed a significantly elevated risk of gastric cancer [HR = 2.81; 95% confidence interval (CI) = 1.62-4.89]. Among those with a high-negative titer, risk increase was observed under moderate or severe atrophic gastritis (HR = 18.73; 95% CI = 8.83-39.70).
CONCLUSIONS: Our results suggest that those with a high-negative anti-H. pylori IgG titer and moderate and severe atrophic gastritis are at increased long-term risk of gastric cancer.
IMPACT: Development of moderate or severe atrophic gastritis in subjects with high-negative anti-H. pylori IgG titer is suggested to increase risk of gastric cancer.
METHODS: The study population consisted of 19,106 Japanese men and women who were followed from 1993 to 2013. A Cox proportional hazards model was used to assess the risk of gastric cancer for plasma anti-H. pylori IgG titers, together with the severity of atrophic gastritis by pepsinogen I and II levels. A total of 595 cases of gastric cancer occurred during an average of 18 years of follow-up.
RESULTS: Compared with those with a low-negative anti-H. pylori IgG titer (≤3 U/mL), subjects with a high-negative titer (3-<10 U/mL) showed a significantly elevated risk of gastric cancer [HR = 2.81; 95% confidence interval (CI) = 1.62-4.89]. Among those with a high-negative titer, risk increase was observed under moderate or severe atrophic gastritis (HR = 18.73; 95% CI = 8.83-39.70).
CONCLUSIONS: Our results suggest that those with a high-negative anti-H. pylori IgG titer and moderate and severe atrophic gastritis are at increased long-term risk of gastric cancer.
IMPACT: Development of moderate or severe atrophic gastritis in subjects with high-negative anti-H. pylori IgG titer is suggested to increase risk of gastric cancer.