Effects of H. Pylori Eradication on the Gastric Preneoplastic Lesion and Neoplasm After ESD

NCT ID: NCT02407119


Title
Effect of Helicobacter Pylori Eradication on Glandular Atrophy and Intestinal Metaplasia in Patients Undergoing Endoscopic Mucosal Resection for Gastric Cancer
Purpose
This study evaluates whether Helicobacter pylori eradication improves precancerous lesions including glandular atrophy and intestinal metaplasia as well as new cancers or dysplasias after endoscopic mucosal resection for gastric cancer.
Details
Helicobacter pylori is a primary etiological agent leading to chronic gastritis and peptic ulcer. The organism is also associated with gastric cancer in epidemiological studies. However detailed mechanism of carcinogenesis remains unknown. Histolopathological studies indicate that chronic H. pylori infection progresses over decades through stages of chronic gastritis, atrophy, intestinal metaplasia, dysplasia and cancer. Gastric atrophy and intestinal metaplasia are considered as precancerous lesions, but whether H. pylori eradication improves these lesions is controversial. And the issue has not been evaluated in gastric cancer patients. However, despite the conflicting evidences from two open labelled randomized controlled trials, current guidelines from various regions recommend H. pylori eradication treatment in patients who were treated for gastric cancer by surgically or endoscopically. Thus, it is important to evaluate whether H. pylori eradication can improve known precancerous lesion, i.e. glandular atrophy and intestinal metaplasia in gastric cancer patients. Such histological improvement can eventually reduce secondary gastric cancer development and provide evidence for current guidelines.
Conditions
Helicobacter Pylori Infection, Early Gastric Cancer, Endoscopic Resection
Keywords
H. pylori eradication, Atrophy, Intestinal metaplasia, Endoscopic resection
Source
National Cancer Center, Korea
Sponsors
National Cancer Center, Korea
Status
Active, not recruiting
Acronym
Last Updated
18 Aug 2016
URL
Official Link
Locations
Korea, Republic of