Clinical Gastroenterology Vol.31 No.2(5-3)

Theme Evidence-based Guidelines Version 2 for Gastric Cancer Screening ; The Beginning of a New Era of Endoscopic Cancer Screening
Title Gastric Cancer Risk Evaluated with Serum Levels of Pepsinogen and Helicobacter pylori Antibody
Publish Date 2016/02
Author Takeichi Yoshida Department of Gastroenterology, Wakayama Medical University
Author Shotaro Enomoto NS Medical & Healthcare Service
Author Mika Watanabe NS Medical & Healthcare Service
Author Hideyuki Tamai Department of Gastroenterology, Wakayama Medical University
Author Jun Kato Department of Gastroenterology, Wakayama Medical University
Author Masao Ichinose Department of Gastroenterology, Wakayama Medical University
[ Summary ] We have recently revealed that both highly active gastritis and severe atrophic gastritis are high risk of gastric cancer in Helicobacter pylor (H. pylori)‒associated gastritis in the follow‒up study of 4,655 healthy asymptomatic subjects, in whom serum pepsinogen (PG) and H. pylori antibody titer had been measured. As supported by several reports, these serum markers would be promising for assessing gastric cancer risk in subjects with H. pylori infection, and are expected to provide a future basis for a more efficient screening program, wherein target settings are based on individual cancer risk. Although a screening method utilizing serum risk markers seems like an ideal framework, its feasibility has to be validated for many crucial points. In particular, this requires much more administrative work than the present method, and the managerial burden might be too great to maintain efficacy. Additionally, the false negative rate of the H. pylori antibody test, which is currently widely used, is high at a non‒negligible level. Until these problems are resolved, incomplete methods, including the so‒called "ABC‒method", should not be adopted for screening. More importantly, to protect the public's health, a reliable and sustainable program for gastric cancer screening should be developed.
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