AzTrials
AzTrials

HELICOBACTER PYLORI INFECTIONSPhase 4NCT07306988

Eradication of Helicobacter Pylori Improves Metabolic Syndrome Through Modulation of Gut Microbiota.

A Phase 4 study testing Vonoprazan-Amoxicillin Dual Therapy, Vonoprazan-Amoxicillin with Bifidobacterium tetravaccae and Vonoprazan-Amoxicillin with Berberine in people with HELICOBACTER PYLORI INFECTIONS and Metabolic Syndrome, run by Nanjing First Hospital, Nanjing Medical University at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The Role of Gut Microbiota in the Mechanism of Helicobacter pylori Eradication-Induced Amelioration of Metabolic Syndrome-Related Parameters Study Sponsor: Nanjing First Hospital Principal Investigator: Dr. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
What is being tested?
Vonoprazan-Amoxicillin Dual Therapy, Vonoprazan-Amoxicillin with Bifidobacterium tetravaccae and Vonoprazan-Amoxicillin with Berberine
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
120 participants
Where
1 siteChina
Study dates
17 Apr 2025to 30 Jun 2026
Phase
Phase 4
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 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • For H. pylori-naïve infected patients with newly diagnosed metabolic syndrome (MS):
  • Aged 18-65 years;
  • Confirmed H. pylori-positive status by urea breath test (UBT), with no prior eradication therapy;
  • Newly diagnosed MS according to the Chinese Diabetes Society (CDS, 2004 Chinese criteria) ;
  • Voluntarily join the trial and sign informed consent.
  • For H. pylori-negative healthy controls with normal metabolism:
Show all 10Show fewer
  • Aged 18-65 years;
  • Confirmed H. pylori-negative status by UBT;
  • Normal metabolic parameters (e.g., blood glucose, lipid profile, blood pressure) without MS;
  • Voluntarily join the trial and sign informed consent.

Who cannot join

  • Hypersensitivity to study drugs (e.g., penicillin, amoxicillin, vonoprazan);
  • Active peptic ulcer confirmed by endoscopy;
  • Prior history of H. pylori eradication therapy;
  • Use of medications for metabolic regulation (e.g., hypoglycemic agents, lipid-lowering drugs, weight-loss drugs)
  • Recent use of antibiotics or bismuth (within 4 weeks) or H2-receptor antagonists/PPIs (within 2 weeks) before enrollment;
  • Current use of corticosteroids, NSAIDs, or anticoagulants;
Show all 11Show fewer
  • History of esophageal or gastric surgery;
  • Pregnant or breastfeeding women;
  • Severe comorbidities (e.g., hepatic, cardiovascular, pulmonary, renal diseases, inflammatory bowel disease);
  • Chronic alcohol abuse (>40 g/day for men, >20 g/day for women);
  • Malignancies (e.g., gastric mucosa-associated lymphoid tissue [MALT] lymphoma).

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

China1 site, 1 recruiting
  • Nanjing First Hospital, Nanjing Medical University

    Nanjing, Jiangsu, 210006

    Ruolin Peng, +86 15913195399, 3480502961@qq.com

    Recruiting

Other trials in China

About this study

Official title: Mechanisms of Gut Microbiota in Improving Metabolic Syndrome-Related Parameters Following Helicobacter Pylori Eradication

The Role of Gut Microbiota in the Mechanism of Helicobacter pylori Eradication-Induced Amelioration of Metabolic Syndrome-Related Parameters

Study Sponsor: Nanjing First Hospital Principal Investigator: Dr. Wanli Liu Department: Gastroenterology Study Duration: February 2025 - August 2025

Read more

Key Information for Patients and Families

  1. What is this study about? This study aims to understand how treating a common stomach infection caused by Helicobacter pylori (Hp) might improve metabolic health issues like high blood sugar, cholesterol problems, or obesity (collectively called metabolic syndrome). Specifically, it explores whether adding probiotics (good bacteria) or a natural compound called berberine (BBR) to standard Hp treatment can enhance these benefits by improving gut bacteria balance.
  2. Who can participate? Patients: Adults aged 18-65 with both Helicobacter pylori infection (confirmed by a breath test) and newly diagnosed metabolic syndrome (based on waist size, blood sugar, cholesterol, or blood pressure). Healthy Volunteers: Adults aged 18-65 with no Hp infection and normal metabolic health (to compare results). Exclusions: Allergy to study medications (e.g., penicillin). Previous Hp treatment, recent antibiotic/steroid use, pregnancy, or serious medical conditions (e.g., liver/kidney disease).
  3. What will participants do? Treatment Groups: Group A: Take two medications (vonoprazan + amoxicillin) for 14 days. Group B: Take the two medications + probiotics (Bifidobacterium tablets). Group C: Take the two medications + berberine (a plant-based supplement). Tests: Before treatment: Breath test, blood tests (blood sugar, cholesterol, inflammation markers), stool sample analysis (gut bacteria), and body measurements (weight, waist size). After treatment (1 month): Repeat tests to check Hp eradication and metabolic improvements.
  4. Possible Benefits and Risks Benefits: Free Hp treatment and metabolic health monitoring. Potential improvement in blood sugar, cholesterol, or weight. Contribution to future treatments for metabolic syndrome. Risks: Mild side effects (e.g., nausea, diarrhea, stomach pain) from medications. Discomfort from blood draws or stool sample collection.
  5. How are participants protected? All treatments are FDA-approved or widely used in clinical practice.

Ethical review ensures participant safety.

You can withdraw at any time without affecting your regular care.

Information for Health Care Providers

  1. Study Design Type: Prospective, single-center, open-label, randomized controlled trial. Population: 140 participants (120 Hp+ patients with metabolic syndrome; 20 Hp- healthy controls). Intervention: Group A: Vonoprazan (20 mg bid) + amoxicillin (1 g tid) for 14 days. Group B: Group A + Bifidobacterium tetragenous probiotic (3 tablets tid). Group C: Group A + berberine (3 tablets tid). Primary Outcomes: Hp eradication rate (confirmed by urea breath test). Changes in metabolic parameters (fasting glucose, HbA1c, lipid profile). Gut microbiota composition (16S rRNA sequencing). Secondary Outcomes: Multi-omics analysis (inflammation markers, endotoxins, short-chain fatty acids, bile acids).
  2. Scientific Rationale Hp and Metabolic Syndrome: Epidemiological evidence links Hp infection to metabolic dysfunction, possibly via chronic inflammation. Eradication may partially reverse insulin resistance and dyslipidemia. Gut Microbiota as Mediator: Hp eradication alters gut microbiota, which regulates metabolic homeostasis through metabolites (e.g., SCFAs), bile acid metabolism, and inflammatory pathways. Probiotics/BBR may enhance these effects.
  3. Methodology Randomization: Block randomization (block size = 4) using SAS 9.4. Assessments: Metabolic Parameters: Fasting glucose, HbA1c, lipid profile, BMI. Microbiome: 16S rRNA sequencing (α/β diversity, taxa abundance). Multi-omics: ELISA (TNF-α, IL-6), GC-MS (SCFAs), UPLC-MS (bile acids). Statistical Analysis: Microbiome: QIIME2, LEfSe, PICRUSt2. Multi-omics: limma, SparCC, sPLS-DA. Clinical data: ANOVA, χ² tests (SPSS v25.0).
  4. Clinical Implications Clarify whether probiotics or BBR add value to Hp eradication in improving metabolic health.

Identify gut microbiota-driven mechanisms linking Hp eradication to metabolic benefits.

Resources for Participants

Study Flowchart:

Screening: Breath test, blood/stool tests (1 week).

Treatment: 14 days of medication.

Follow-up: Repeat tests at 1 month.

Contact Information:

Dr. Wanli Liu: +86-18951670222

Nanjing First Hospital Gastroenterology Department.

FAQ Sheet:

Can I take my regular medications? Yes, unless they interfere with Hp treatment (e.g., PPIs).

What if I miss a dose? Contact the study team immediately.

Ethical Compliance Approved by the Institutional Review Board of Nanjing First Hospital.

Complies with the Declaration of Helsinki and China's ethical guidelines.

Informed consent required for participation.

Being tested
Vonoprazan-Amoxicillin Dual Therapy, Vonoprazan-Amoxicillin with Bifidobacterium tetravaccae, Vonoprazan-Amoxicillin with Berberine
Medical subject headings
Metabolic Syndrome

What participants receive

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

  • Vonoprazan-Amoxicillin Dual TherapyDrug

    Patients receive oral vonoprazan 20 mg twice daily and amoxicillin 1000 mg three times daily for 14 days. This regimen is a standard dual therapy for Helicobacter pylori eradication.

  • Vonoprazan-Amoxicillin with Bifidobacterium tetravaccaeDrug

    Patients receive oral vonoprazan 20 mg twice daily, amoxicillin 1000 mg three times daily, and Bifidobacterium tetravaccae probiotic tablets (3 tablets three times daily) for 14 days.

  • Vonoprazan-Amoxicillin with BerberineDrug

    Patients receive oral vonoprazan 20 mg twice daily, amoxicillin 1000 mg three times daily, and berberine hydrochloride tablets (3 tablets three times daily) for 14 days.

Study groups in NCT07306988
Study groupRoleWhat they receive
VA groupExperimentalNot described
Receives: Drug: Vonoprazan-Amoxicillin Dual Therapy
Probiotics GroupExperimentalNot described
Receives: Drug: Vonoprazan-Amoxicillin with Bifidobacterium tetravaccae
BBR GroupExperimentalNot described
Receives: Drug: Vonoprazan-Amoxicillin with Berberine

What is being measured

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

  1. Helicobacter pylori Eradication Rate

    Measured: Post-treatment follow-up at 1 month

  2. Change in Serum Triglycerides

    Measured: Baseline and 1 month post-treatment.

  3. Change in HDL Cholesterol

    Measured: Baseline and 1 month post-treatment.

  4. Change in Blood Pressure

    Measured: Baseline and 1 month post-treatment.

  5. Change in Waist Circumference

    Measured: Baseline and 1 month post-treatment.

  6. Change in Fasting Plasma Glucose

    Measured: Baseline and 1 month post-treatment.

Secondary outcomes (6)
  1. Change in gut microbiota alpha-diversity, assessed by 16S rRNA gene sequencing

    Measured: Baseline and 1 month post-treatment.

  2. Change in gut microbiota beta-diversity, assessed by 16S rRNA gene sequencing

    Measured: Baseline and 1 month post-treatment.

  3. Identification of differentially abundant bacterial taxa (Genus level), assessed by 16S rRNA gene sequencing and statistical modeling (e.g., LEfSe or DESeq2)

    Measured: Baseline and 1 month post-treatment.

  4. Serum Levels of Inflammatory Cytokines (Including TNF-α, CRP, IL-6, and IL-8)

    measured by enzyme-linked immunosorbent assay (ELISA) in serum.

    Measured: Baseline and 1 month post-treatment.

  5. Endotoxins

    measured by limulus amebocyte lysate (LAL) assay in serum

    Measured: Baseline and 1 month post-treatment.

  6. Gut microbiota-derived metabolites

    measured by liquid chromatography-mass spectrometry (LC-MS)

    Measured: Baseline and 1 month post-treatment.

Timeline

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

  1. First posted29 Dec 2025
  2. Study start17 Apr 2025
  3. Primary completion30 Jun 2026 (estimated)
  4. Study completion30 Jun 2026 (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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
120 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07306988
Sponsor's protocol ID
KY20250327-12
Status last verified
Apr 2026
First submitted
29 Aug 2025
Last updated
13 Apr 2026
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 4 study testing Vonoprazan-Amoxicillin Dual Therapy, Vonoprazan-Amoxicillin with Bifidobacterium tetravaccae and Vonoprazan-Amoxicillin with Berberine in people with HELICOBACTER PYLORI INFECTIONS and Metabolic Syndrome, run by Nanjing First Hospital, Nanjing Medical University at 1 site in China.

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 10 inclusion and 11 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: looking for participants now, as of the sponsor's last update on 13 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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 Wanli Liu (+86 18951768998, 18951768998@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Helicobacter pylori Eradication Rate (time frame: Post-treatment follow-up at 1 month). The study lists 6 primary outcomes in all. 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 13 Apr 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in