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Helicobacter pylori Screening Study

A randomised trial of the effects of screening for and treating Helicobacter pylori

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN71557037
Enrollment
56000
Registered
2011-05-09
Start date
1997-04-07
Completion date
Unknown
Last updated
2026-03-02

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

Conditions

Prevention of stomach cancer Cancer Gastric cancer

Interventions

Participants seen in treatment weeks, if H. pylori positive, were offered a one week course of eradication therapy comprising twice-daily oral metronidazole 400 mg, clarithromycin 250 mg and lansopraz

Sponsors

Queen Mary University of London (UK)
Lead Sponsor

Eligibility

Sex/Gender
All
Age
35 Years to 69 Years

Inclusion criteria

Inclusion criteria: 1. Healthy NHS-registered UK residents 2. Male participants aged 35-69 3. Female participants aged 45-69 4. Patients attending a Bupa Wellness Centre for a health screen

Exclusion criteria

Exclusion criteria: 1. On medication which may interact dangerously with metronidazole, clarithromycin or lansoprazole (according to Appendix 1 of the British National Formulary) 2. A history of intolerance or allergy to metronidazole, clarithromycin or lansoprazole or other drugs of the same class as any of these three drugs 3. Currently being treated for an ulcer 4. On a proton-pump inhibitor or H2 antagonist 5. Having been tested or treated for H. pylori infection in the previous three years 6. Pregnancy or breastfeeding 7. Past history of or current gastric cancer 8. Life-threatening illness 9. Porphyria 10. Prolongation of QT interval 11. Current clinical liver disease or a history of severe liver disease

Design outcomes

Secondary

MeasureTime frame
1. Incidence of and death from oesophageal cancer 2. Death from ischaemic heart disease 3. Death from gastric bleed or peptic ulcer

Primary

MeasureTime frame
Incidence of and death from stomach cancer

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 14, 2026