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Tegoprazan-Amoxicillin Dual Therapy vs. Bismuth Quadruple Therapy for H. Pylori Infection (TATH-1)

Tegoprazan-Amoxicillin Dual Therapy Versus Esomeprazole-Based Bismuth Quadruple Therapy for First-Line Helicobacter Pylori Eradication: A Prospective, Randomized, Multicenter, Superiority Study (TATH-1)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05647278
Acronym
TATH-1
Enrollment
370
Registered
2022-12-12
Start date
2023-11-01
Completion date
2025-10-31
Last updated
2026-01-16

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

Conditions

Helicobacter Pylori Infection

Keywords

Helicobacter pylori, Eradication

Brief summary

Standard eradication therapies using proton pump inhibitors (PPIs) require double doses to achieve sufficient acid suppression, yet failure rates remain high due to antibiotic resistance. Tegoprazan, a P-CAB agent, inhibits gastric acid more effectively than PPIs. This study hypothesizes that Tegoprazan-based dual therapy can achieve superior or non-inferior eradication rates compared to standard quadruple therapy. The study evaluates the antibacterial effect of Tegoprazan combined with high-dose Amoxicillin in H. pylori-infected patients.

Detailed description

Note on Protocol Amendment and Registration Update: The study protocol was amended in November 2023 to include a randomized comparison of Tegoprazan 50 mg QD versus BID (within the TAT arm) and to adjust the Amoxicillin dosage to 1000 mg TID. Important Explanation: Although this amendment was approved by the Ethics Committee and implemented immediately, the update to the ClinicalTrials.gov registry was delayed due to an administrative oversight by the research team. The inclusion of the BID arm and the secondary randomization were pre-planned and executed strictly according to the protocol, not as a post-hoc analysis. Study Description: Helicobacter pylori infection is a major cause of gastric diseases. Currently, Bismuth Quadruple Therapy (BQT) is the recommended first-line treatment in China. However, the efficacy of BQT is increasingly challenged by antibiotic resistance (especially to clarithromycin) and complex dosing regimens, which can reduce patient compliance. Tegoprazan is a novel potassium-competitive acid blocker (P-CAB) that provides rapid, potent, and durable acid suppression, theoretically creating an ideal environment for amoxicillin to eradicate H. pylori. Unlike proton pump inhibitors (PPIs), Tegoprazan does not require activation by acid and is less influenced by CYP2C19 genetic polymorphisms. This prospective, randomized, multicenter study aims to compare the efficacy, safety, and compliance of 14-day Tegoprazan-Amoxicillin Dual Therapy (TAT) versus Esomeprazole-based Bismuth Quadruple Therapy (BQT) in treatment-naïve patients. The study hypothesizes that the TAT regimen is superior or non-inferior to the standard BQT regimen in eradicating H. pylori infection.

Interventions

DRUGTegoprazan 50 mg, tablets, orally, qd

Tegoprazan 50 mg, tablets, orally, qd given in combination with amoxicillin 1000mg capsules, orally, tid for up to 2 weeks.

DRUGEsomeprazole 20mg BID

esomeprazole 20 mg, tablets, orally, bid given in combination with amoxicillin 1000mg,clarithromycin 500mg bid,colloidal bismuth pectin 200mg bid for up to 2 weeks. OR esomeprazole 20 mg, tablets, orally, bis in die given in combination with amoxicillin 750mg capsules, orally, quarter die for up to 2 weeks.

DRUGTegoprazan 50 mg, tablets, orally, bid

Tegoprazan 50 mg, tablets, orally, bid given in combination with amoxicillin 1000mg capsules, orally, tid for up to 2 weeks.

DRUGamoxicillin +clarithromycin+colloidal bismuth pectin BID

amoxicillin 1000mg,clarithromycin 500mg bid,colloidal bismuth pectin 200mg bid for up to 2 weeks

DRUGamoxicillin 1000mg tid

amoxicillin 1000mg tid

Sponsors

Zhang Xiaofeng,MD
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Patients aged ≥18 years with Hp-positive first sterilization were included in this study. 2. Before treatment, the existence of Helicobacter pylori can be confirmed by one or more of the following methods: rapid urease test, Hp culture, 13C urea breath test, 14C urea breath test and stool Hp antigen test.

Exclusion criteria

1. acute upper gastrointestinal bleeding. 2. active gastric or duodenal ulcer. 3. acute gastric or duodenal mucosal lesions. 4. previous eradication treatment of Helicobacter pylori. 5. penicillin/furazolidone allergy. 6. surgery that may affect gastric acid secretion (upper gastrointestinal resection or vagotomy). 7. Zollinger-Ellison syndrome or other hypergastric acid secretion diseases. 8. severe neurological, cardiovascular, pulmonary, liver,renal, metabolic,gastrointestinal, urological, etc. 9. Any fertile woman must use proper contraception.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Helicobacter Pylori Positive (HP+) Participants With Successful HP Eradication at Week 4 Post- TreatmentWeek 4-8 post-treatmentHP infection status will be determined by \^13C Urea Breath Test (\^13C-UBT). The urea breath test is used to detect infection with HP, a bacteria associated with stomach ulcers, by testing individual breath samples in a central laboratory.

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026