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AzTrials

Helicobacter Pylori Infection Helicobacter Pylori Eradication Patient EducationPhase 3KHDT-SGTNCT06760065

Comparison of Keverprazan Hydrochloride-Amoxicillin Dual Therapy and Susceptibility-Guided Quadruple Therapy for Helicobacter Pylori Rescue Treatment

A Phase 3 study testing Keverprazan Hydrochloride tablets + high dose amoxicillin and Susceptibility-Guided Quadruple Therapy in people with Helicobacter Pylori Infection Helicobacter Pylori Eradication Patient Education, run by Sixth Affiliated Hospital, Sun Yat-sen University.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This study aims to evaluate the efficacy and safety of Keverprazan Hydrochloride combined with Amoxicillin in dual therapy compared to susceptibility-guided quadruple therapy in the treatment of Helicobacter pylori (H. pylori) infections requiring rescue therapy. H. Read more about this study

Who is it for?
Ages 18 to 75 years
What is being tested?
Keverprazan Hydrochloride tablets + high dose amoxicillin and Susceptibility-Guided Quadruple Therapy
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
316 participants
Where
No sites listed yet
Study dates
15 Jan 2025to 31 Dec 2027
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female participants aged ≥18 years and ≤75 years at the time of signing the informed consent.
  • Participants who have undergone at least one prior standard H. pylori eradication treatment but failed.
  • Current H. pylori infection confirmed by 13C-UBT, or H. pylori culture.
  • Participants who, in the investigator's opinion, are able to understand and comply with the study requirements.
  • Written informed consent and any required privacy authorization documents signed and dated before the initiation of any study procedures.
  • For women of childbearing potential with regular or potential sexual activity with non-sterilized male partners, agreement to use two effective methods of contraception from the time of informed consent until the end of the study.

Who cannot join

  • Presence of gastric or duodenal ulcer with current or recent bleeding as evidenced by endoscopy.
  • Confirmed gastric cancer by endoscopic biopsy.
  • Receipt of any investigational drug (including marketed drugs used in post-marketing studies) within 30 days prior to the screening period. Participants who failed screening and did not receive the investigational drug may be included.
  • Participants who are investigators, relatives of investigators, or otherwise have conflicts of interest or may be under pressure to participate.
  • History of cutaneous or systemic lupus erythematosus.
  • Clinical manifestations of upper or lower gastrointestinal bleeding within 4 weeks prior to randomization.
Show all 20Show fewer
  • Diagnosis of Zollinger-Ellison syndrome or other gastric acid hypersecretory disorders.
  • Known allergy or hypersensitivity to Keverprazan Hydrochloride (including excipients), PPIs, amoxicillin, clarithromycin, metronidazole, levofloxacin, tetracycline, furazolidone, or excipients in 13C-UBT (mannitol, citric acid, or aspartame).
  • History of alcohol abuse, illicit drug use, or drug addiction within 12 months prior to screening, or weekly alcohol intake exceeding 21 units (1 unit = 12 oz/300 ml beer, 1.5 oz/25 ml spirits, or 5 oz/100 ml wine).
  • Use of antibiotics, bismuth agents, or antiprotozoal drugs within 30 days prior to 13C-UBT, or use of H2 receptor antagonists, PPIs, or interfering drugs (e.g., sodium succinate) within 14 days.
  • Concurrent use of drugs contraindicated with clarithromycin (e.g., colchicine, pimozide, ergot derivatives, tadalafil, terfenadine, astemizole, cisapride, simvastatin, lovastatin, atorvastatin, etc.)..Use of pravastatin, fluvastatin, or rosuvastatin is permitted but should be used with caution.
  • Concurrent use of strong CYP2C19 or CYP3A4 inhibitors or inducers (e.g., fluconazole, fluoxetine, fluvoxamine, ticlopidine, rifampin, ritonavir, itraconazole, ketoconazole, indinavir, nelfinavir, saquinavir, telithromycin).
  • History of surgeries affecting gastric acid secretion, such as gastric resection or vagotomy.
  • Significant central nervous, cardiovascular, hepatic, pulmonary, renal, metabolic, gastrointestinal, urological, reproductive, endocrine, or hematological disorders that may affect the study results or participant safety, as judged by the investigator.
  • History of any malignancy, including MALT lymphoma.
  • Need for hospitalization or surgery during the study or within 30 days prior to screening.
  • Diagnosis of AIDS or HIV infection.
  • Female participants who are pregnant, breastfeeding, planning to become pregnant, or planning to donate eggs during the study or within 4 weeks after the study.
  • Participants with negative H. pylori culture during the screening period.
  • Participants with prior P-CAB plus amoxicillin dual therapy.

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

Xiang Peng contact

+86-020-3825401

About this study

Official title: A Multicenter, Randomized Controlled Study Comparing Keverprazan Hydrochloride-Amoxicillin Dual Therapy and Susceptibility-Guided Quadruple Therapy in Helicobacter Pylori Rescue Treatment

This study aims to evaluate the efficacy and safety of Keverprazan Hydrochloride combined with Amoxicillin in dual therapy compared to susceptibility-guided quadruple therapy in the treatment of Helicobacter pylori (H. pylori) infections requiring rescue therapy. H. pylori is a common infectious disease associated with peptic ulcers, gastric cancer, and mucosa-associated lymphoid tissue lymphoma. However, the increasing resistance of H. pylori to antibiotics has reduced the eradication rates of standard therapies.

Potassium-competitive acid blockers (P-CABs), such as Keverprazan Hydrochloride, provide faster and more sustained gastric acid suppression compared to traditional proton pump inhibitors (PPIs), making them a promising option for H. pylori treatment. This multicenter, randomized controlled trial will provide critical evidence comparing the effectiveness of Keverprazan-based dual therapy to susceptibility-guided quadruple therapy, aiming to establish optimized rescue therapy guidelines for H. pylori eradication.

Read the detailed description

Helicobacter pylori (H. pylori) is a globally prevalent chronic infectious disease with an infection rate exceeding 50%. As a Gram-negative bacterium, H. pylori survives in the acidic gastric environment and is a major cause of peptic ulcers, gastric mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Eradication of H. pylori can prevent the recurrence of peptic ulcers and reduce the risk of developing gastric cancer. However, increasing antibiotic resistance has significantly decreased the eradication rate of standard triple therapy to below 80%, posing a substantial challenge to effective H. pylori management.

This study focuses on evaluating a novel potassium-competitive acid blocker (P-CAB), Keverprazan Hydrochloride, in combination with Amoxicillin as dual therapy for H. pylori rescue treatment. P-CABs, including Keverprazan, offer rapid and sustained gastric acid suppression independent of CYP2C19 polymorphism, overcoming limitations of traditional proton pump inhibitors (PPIs). Recent studies have demonstrated the efficacy of P-CABs in first-line H. pylori treatment with high eradication rates and fewer side effects. However, evidence for their use in rescue therapy is currently lacking.

This multicenter, randomized controlled trial aims to compare the efficacy and safety of Keverprazan Hydrochloride-Amoxicillin dual therapy with susceptibility-guided quadruple therapy in patients requiring rescue treatment. The trial will involve patients with confirmed H. pylori infection who failed previous treatment regimens. The study's primary outcome is the eradication rate, and secondary outcomes include the incidence of adverse events and patient compliance.

This research is expected to provide critical evidence for the clinical application of Keverprazan Hydrochloride in H. pylori rescue therapy, potentially establishing it as an effective and patient-friendly treatment option.

Being tested
Keverprazan Hydrochloride tablets + high dose amoxicillin, Susceptibility-Guided Quadruple Therapy
Keywords
Helicobacter pylori, Keverprazan Hydrochloride, Susceptibility-guided therapy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Keverprazan Hydrochloride tablets + high dose amoxicillinDrug

    Keverprazan Hydrochloride, a potassium-competitive acid blocker (P-CAB), is administered at a dose of 20 mg twice daily in combination with Amoxicillin 0.75 g four times daily for 14 days. This dual therapy is designed to provide rapid and sustained gastric acid suppression and evaluate its efficacy in eradicating Helicobacter pylori.

  • Susceptibility-Guided Quadruple TherapyDrug

    Participants in this arm will receive quadruple therapy tailored to individual H. pylori resistance profiles, including a proton pump inhibitor (Esomeprazole 20 mg), Bismuth Potassium Citrate 220 mg, and two antibiotics selected based on susceptibility testing (e.g., Amoxicillin, Clarithromycin, Metronidazole, Levofloxacin, or Furazolidone). The regimen is administered for 14 days to optimize eradication outcomes.

Study groups in NCT06760065
Study groupRoleWhat they receive
Keverprazan Hydrochloride + AmoxicillinExperimentalParticipants in this arm will receive Keverprazan Hydrochloride 20 mg twice daily and Amoxicillin 0.75 g four times daily for 14 days. This dual therapy aims to evaluate the efficacy of Keverprazan Hydrochloride, a potassium-competitive acid blocker, in combination with Amoxicillin for Helicobacter pylori eradication.
Receives: Drug: Keverprazan Hydrochloride tablets + high dose amoxicillin
Susceptibility-Guided Quadruple TherapyActive comparatorParticipants will receive susceptibility-guided quadruple therapy based on H. pylori resistance testing: Clarithromycin-sensitive strains: Esomeprazole 20 mg, Bismuth Potassium Citrate 220 mg, Amoxicillin 1 g, and Clarithromycin 500 mg, twice daily for 14 days. Metronidazole-sensitive strains: Esomeprazole 20 mg, Bismuth Potassium Citrate 220 mg, Amoxicillin 1 g, and Metronidazole 400 mg, twice daily for 14 days. Levofloxacin-sensitive strains: Esomeprazole 20 mg, Bismuth Potassium Citrate 220 mg, Amoxicillin 1 g (twice daily), and Levofloxacin 500 mg (once daily) for 14 days. Multi-drug resistant strains: Esomeprazole 20 mg, Bismuth Potassium Citrate 220 mg, Amoxicillin 1 g, and either Furazolidone 0.1 g (twice daily) or Tetracycline 500 mg (four times daily) for 14 days. For Amoxicillin-resistant strains, antibiotics will be adjusted based on susceptibility testing.
Receives: Drug: Susceptibility-Guided Quadruple Therapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Proportion of Participants with Successful Eradication of Helicobacter pylori

    The proportion of participants who achieve successful eradication of Helicobacter pylori. Eradication is defined as a negative result on the 13C-Urea Breath Test (13C-UBT) conducted at least 4 weeks after the last dose of the study medication. The eradication rate will be calculated as: Eradication Rate=(Number of Participants with Successful Eradication/ Total number of participants)*100% This outcome will compare the efficacy of Keverprazan Hydrochloride + Amoxicillin dual therapy to susceptibility-guided quadruple therapy in the rescue treatment of H. pylori infection.

    Measured: At least 4 weeks after the last dose of study medication

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Jan 2025
  2. Study start15 Jan 2025 (estimated)
  3. Primary completion31 Dec 2027 (estimated)
  4. Study completion31 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This study uses a parallel design, where participants are randomly assigned to one of two groups: (1) Keverprazan Hydrochloride combined with Amoxicillin as a dual therapy, or (2) a susceptibility-guided quadruple therapy. Each group will receive the assigned treatment independently, and outcomes will be compared to assess the efficacy and safety of both regimens. Randomization ensures balanced allocation, and the parallel model allows for direct comparison of the two interventions under controlled conditions.
Masking
None (open label)
Enrolment
316 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06760065
Sponsor's protocol ID
KHDT-SGT
Other IDs
1010-Program
Acronym
KHDT-SGT
Status last verified
Jan 2025
First submitted
28 Dec 2024
Last updated
9 Jan 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Keverprazan Hydrochloride tablets + high dose amoxicillin and Susceptibility-Guided Quadruple Therapy in people with Helicobacter Pylori Infection Helicobacter Pylori Eradication Patient Education, run by Sixth Affiliated Hospital, Sun Yat-sen University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 9 Jan 2025. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Xiang Peng (+86-020-3825401), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Proportion of Participants with Successful Eradication of Helicobacter pylori (time frame: At least 4 weeks after the last dose of study medication). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Jan 2025.

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