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Epidemiological Survey of Non-Helicobacter pylori Helicobacter Infection in H. pylori naive patients with gastric cancer

Epidemiological Survey of Non-Helicobacter pylori Helicobacter Infection in H. pylori naive patients with gastric cancer - Epidemiological Survey of NHPH Infections in H. pylori naive GC patients

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000059189
Enrollment
150
Registered
2025-11-01
Start date
2025-11-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

NHPH Infections

Interventions

None listed

Sponsors

Oita University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) H. pylori-naive gastric cancer patients who visit Oita University Hospital or one of the participating facilities and undergo an upper gastrointestinal endoscopy (2) Patients who have given their consent to participate in this study, either verbally or in writing (3) Patients who are over 18 years of age

Exclusion criteria

Exclusion criteria: (1) Cases positive for H. pylori (2) Cases with a history of H. pylori eradication therapy (3) Cases taking acid inhibory drug or antibiotics within 2 weeks prior to the endoscopy date (4) Cases taking immunosuppressants or steroids (5) Cases with severe complications (heart failure, renal failure, liver failure, respiratory failure) (6) Other cases deemed inappropriate for participation in this study

Design outcomes

Primary

MeasureTime frame
NHPH infection rate in gastric tumor patients confirmed to be H. pylori-free using multiple diagnostic methods

Secondary

MeasureTime frame
1. NHPH infection rates in H. pylori-naive gastric tumors in Japan by histopathological type 2. NHPH Infection rates in H. pylori-naive gastric tumors in Japan by disease type 3. Evaluation of NHPH Infection Diagnosis Using Endoscopic Aspirate from H. pylori-naive gastric tumors 4. Evaluation of Patient Background in NHPH Infections (Age, Sex, Disease, Pet Ownership History, Hormone Injection History, etc.) 5. Evaluation of abdominal symptoms in patients with NHPH infection 6. Evaluation of endoscopic findings in NHPH infection 7. Association between NHPH bacterial species and H. pylori-uninfected gastric tumors

Countries

Japan

Contacts

Public ContactMitsushige Sugimoto

Oita University Research Center for GLOBAL and LOCAL Infectious Disease

rinrikenkyu@oita-u.ac.jp097-586-5401

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026