Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 to 70

New treatment approach for Helicobacter pylori infection

Official title: Vonoprazan-Amoxicillin Dual Sequential Therapy For Helicobacter Pylori-infected Treatment-naive Patients:A Randomized, Open-label, Parallel-controlled , Multicenter Clinical Trial

Run by The First Affiliated Hospital with Nanjing Medical University · NCT06929962 · Data updated 2026-11-12

This study is testing a new two-phase treatment for Helicobacter pylori infection that combines a stomach medication with higher doses of antibiotics to see if it works better and is easier for patients to handle than the usual treatment.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years to 70 Years
SexAll
Enrollment600 (estimated)
SponsorThe First Affiliated Hospital with Nanjing Medical University
Academic / other
Locations1 site (Nanjing, Jiangsu)
StatusRecruiting
StartedApril 24, 2025
Main results expectedDecember 1, 2026
Study endsDecember 31, 2026
Registry record updatedSeptember 1, 2026
Trial IDNCT06929962 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18-70 with chronic gastritis and confirmed Helicobacter pylori positivity.

Probably not a fit

Patients with a history of Helicobacter pylori eradication therapy or those allergic to the study medications may not benefit from this trial.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial evaluates a modified sequential therapy for Helicobacter pylori infection, which combines vonoprazan with high-dose amoxicillin in two phases. The first phase involves a standard dosage of amoxicillin, while the second phase increases the dosage to enhance efficacy and reduce side effects. The study aims to compare this new regimen with standard dual therapy over a 14-day period, focusing on eradication rates, efficacy, and patient tolerance. By gradually increasing the drug dosage, the trial seeks to improve patient adherence and minimize adverse effects.

Why it matters

Potential benefit: If successful, this treatment could provide a more effective and better-tolerated option for patients suffering from Helicobacter pylori infections.

How similar studies have gone: Previous studies have shown that modified dual therapy approaches can achieve similar eradication rates with fewer side effects, indicating potential success for this novel regimen.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Aged 18-70 years, gender unrestricted.
2. Chronic gastritis patients with Helicobacter pylori positivity: (1) Helicobacter pylori positive is defined as a positive result on a carbon-13 or carbon-14 breath test within one month prior to enrollment; (2) Chronic gastritis is defined as a diagnosis based on gastroscopy within six months prior to enrollment.
3. No previous Helicobacter pylori eradication therapy.
4. Agree to participate in the trial and sign the informed consent form

Exclusion Criteria:

1. Allergy to any of the drugs used in this clinical trial.
2. Previously received H. pylori eradication treatment.
3. Receiving Potassium-competitive acid blocker (P-CAB), proton pump inhibitor (PPI), H2 receptor antagonist, antibiotics, bismuth, probiotic preparations 4 weeks before initiating study treatment.
4. Use of non-steroidal anti-inflammatory drugs (NSAIDs), adrenal corticosteroids, or anticoagulants during the study period.
5. Pregnant or lactating women, or patients planning to conceive during the study period.
6. Patients with hepatic or renal dysfunction, or those with severe concomitant diseases that may affect the evaluation of this study, such as heart disease, lung disease, liver disease, kidney disease, metabolic disorders, mental illnesses, malignant tumors, etc..
7. Gastroscopy findings indicating conditions other than gastritis, such as reflux esophagitis, which require continued use of potassium-competitive acid blockers (P-CABs), proton pump inhibitors (PPIs), H2 receptor antagonists, or bismuth after Helicobacter pylori eradication.
8. Patients with a history of gastric surgery.
9. Patients who are unable to accurately express their symptoms, such as those with psychiatric disorders or severe neurosis, and are unable to cooperate with the trial.
10. Patients who have participated in other drug studies within 3 months before using the investigational drug.
11. Other conditions deemed by the investigator as unsuitable for participation in this trial.

Where it's running

  • The First Affiliated Hospital with Nanjing Medical University
    Nanjing, Jiangsu, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.