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Effect of Bismuth Add-on to Dual Therapy for Helicobacter Pylori Eradication

Effect of Bismuth Add-on to Vonoprazan-Amoxicillin Dual Therapy for Helicobacter Pylori Eradication - A Multicenter Randomized Controlled Trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07576959
Enrollment
990
Registered
2026-05-08
Start date
2026-04-08
Completion date
2032-12-31
Last updated
2026-05-08

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

Conditions

HELICOBACTER PYLORI INFECTIONS

Brief summary

This study aims to compare the efficacy and safety of a bismuth-supplemented 14-day vonoprazan-based dual therapy ( triple therapy) versus a 14-day vonoprazan-based dual therapy without bismuth for first-line H. pylori eradication. Furthermore, the investigators will investigate the impact of these eradication regimens on the gut microbiota, the development of antibiotic resistance, and changes in metabolic syndrome indicators pre- and post-treatment.

Detailed description

Background: Although bismuth is not an antibiotic, it enhances antibiotic efficacy through multiple synergistic mechanisms. Currently, it remains unknown whether adding bismuth to a 14-day bismuth-vonoprazan-amoxicillin triple therapy is superior or non-inferior to the vonoprazan-amoxicillin dual therapy alone. Objectives: This study aims to compare the efficacy and safety of a bismuth-supplemented 14-day vonoprazan-based triple therapy versus a 14-day vonoprazan-based dual therapy without bismuth for first-line H. pylori eradication. Hypothesis: The investigators hypothesize that the efficacy of a 14-day bismuth-vonoprazan triple therapy is superior or non-inferior to that of a 14-day vonoprazan-based dual therapy without bismuth. Methods: Study Design: An open-label, randomized controlled trial (RCT). Participants: The investigators intend to recruit 990 treatment-naïve patients with confirmed H. pylori infection. Intervention and Randomization: Eligible participants will be randomized into one of two groups: * Group A: 14-day bismuth-vonoprazan triple therapy. * Group B: 14-day vonoprazan-based dual therapy (without bismuth).

Interventions

DRUGBismuth Add-on to Vonoprazan Dual Therapy

bismuth, vonoprazan and amoxicillin for 14 days

vonoprazan and amoxicillin for 14 days

Sponsors

National Taiwan University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Individuals infected with Helicobacter pylori who have not previously undergone eradication therapy. 2. Individuals willing to receive first-line eradication therapy. 3. Study participants must be 20 years of age or older.

Exclusion criteria

1. Individuals with a history of gastrectomy (stomach removal surgery). 2. Individuals unsuitable to receive the study drug (e.g., history of allergy or severe adverse effects to the study drug). 3. Pregnant or breastfeeding women. 4. Individuals with severe acute or chronic diseases, such as renal failure, liver cirrhosis, or incurable malignant tumors. 5. Patients with chronic hepatitis (AST \[Aspartate Aminotransferase\] or ALT \[Alanine Aminotransferase\] \> 100 U/L). 6. Individuals unwilling to comply with the treatment plan or sign the informed consent form.

Design outcomes

Primary

MeasureTime frameDescription
Eradication rate determined by Intention-to-Treat (ITT) analysis6-8 weeksEradication rate will be determined by urea breath test at least 6 weeks later after completion of treatment.

Secondary

MeasureTime frameDescription
Per-protocol (PP) eradication rate; adverse event profiles6-8 weeksEradication rate will be determined by urea breath test at least 6 weeks later after completion of treatment. A standard interview and questionaire will be used toassess the adverse effects.

Countries

Taiwan

Contacts

CONTACTMei-Jyh Chen, MD, PhD
migichen@ntuh.gov.tw886-2-23123456 Ext. 265427

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 9, 2026