A Multi-center Study for Eradication of Refractory Helicobacter Pylori

NCT ID: NCT02741414

Last Updated: 2016-07-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

4428 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-06-30

Study Completion Date

2018-12-31

Brief Summary

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Recently studies showed that the eradication rate of H. pylori fail to exceed 80% and even falls into an unacceptable range. A major cause of treatment failure is associated with antibiotic resistance and poor patient compliance. However, the refractory infection of H. pylori is still existing, although patients have good compliance and receive standardized treatment. This phenomenon is likely attributed to the different ratio of sensitive and resistance in H. pylori, the difference of Amoxicillin resistance between in vivo and in vitro, the difference between phenotype and genotype or the influence of micro-environment in the stomach. In order to solve the refractory infection of H. pylori, investigators performed a muti-center study together with other 14 institutions. In this study, investigators will select the patients with refractory infection of H. pylori after two standardized treatment from patients with first eradication therapy of H. pylori infection. Then, investigators will perform a high-throughput sequencing for patients in groups. Finally, investigators will compare the differences between the patients with first successful eradication and patients with refractory infection of H. pylori, such as drug resistance gene mutation, phenotype and genotype, the mechanisms of Amoxicillin resistance and micro-environment in stomach.

Detailed Description

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Conditions

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Gastritis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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H pylori culture negative group

The patients who have the negative result of H pylori culture were classified into H pylori culture negative group.

Group Type EXPERIMENTAL

The result of H pylori culture based on gram staining and enzyme activity testing

Intervention Type DEVICE

This intervention aimed at patients with the positive result of 13C-urea breath test. Patients with negative result of H pylori culture was H pylori culture negative group. Patients with positive result of H pylori culture were belonged into the first successful eradication group and the refractory infection of H. pylori group.

The first successful eradication group

The patients with first eradication therapy of H. pylori infection have the first successful treatment based on the standardized treatment including antibiotics selection from antibiotic susceptibility testing and proton pump inhibitors (PPIs) dose selection from CYP2C19 gene sequencing.

Group Type EXPERIMENTAL

The result of H pylori culture based on gram staining and enzyme activity testing

Intervention Type DEVICE

This intervention aimed at patients with the positive result of 13C-urea breath test. Patients with negative result of H pylori culture was H pylori culture negative group. Patients with positive result of H pylori culture were belonged into the first successful eradication group and the refractory infection of H. pylori group.

The result of 13C-urea breath test after treatment based on the selection of clarithromycin, levofloxacin, metronidazole, amoxicillin,tetracycline,furazolidone and the dose of esomeprazole

Intervention Type DEVICE

The intervention focused on the results from the result of 13C-urea breath test after treatment. The first successful eradication group and the refractory infection of H. pylori group were treated according to the antibiotic susceptibility testing and CYP2C19 gene polymorphism. Eight weeks after treatment, a 13C-urea breath test was performed on patients. The first successful eradication group were patients with negative in 13C-urea breath tests in the first treatment. The refractory infection of H. pylori group were treatment failure patients with positive in 13C-urea breath tests after the second standardized treatment.

The result of Amoxicillin resistance in vitro based on antibiotic susceptibility testing

Intervention Type DEVICE

The intervention focused on the results from the result of Amoxicillin susceptibility testing in vitro. In this study, the investigators selected the patients with Amoxicillin resistance from the first successful eradication group and the refractory infection of H. pylori group.

The refractory infection of H. pylori group

The patients with first eradication therapy of H. pylori infection have the two failure treatment based on the standardized treatment including antibiotics selection from antibiotic susceptibility testing and PPIs dose selection from CYP2C19 gene sequencing.

Group Type EXPERIMENTAL

The result of H pylori culture based on gram staining and enzyme activity testing

Intervention Type DEVICE

This intervention aimed at patients with the positive result of 13C-urea breath test. Patients with negative result of H pylori culture was H pylori culture negative group. Patients with positive result of H pylori culture were belonged into the first successful eradication group and the refractory infection of H. pylori group.

The result of 13C-urea breath test after treatment based on the selection of clarithromycin, levofloxacin, metronidazole, amoxicillin,tetracycline,furazolidone and the dose of esomeprazole

Intervention Type DEVICE

The intervention focused on the results from the result of 13C-urea breath test after treatment. The first successful eradication group and the refractory infection of H. pylori group were treated according to the antibiotic susceptibility testing and CYP2C19 gene polymorphism. Eight weeks after treatment, a 13C-urea breath test was performed on patients. The first successful eradication group were patients with negative in 13C-urea breath tests in the first treatment. The refractory infection of H. pylori group were treatment failure patients with positive in 13C-urea breath tests after the second standardized treatment.

The result of Amoxicillin resistance in vitro based on antibiotic susceptibility testing

Intervention Type DEVICE

The intervention focused on the results from the result of Amoxicillin susceptibility testing in vitro. In this study, the investigators selected the patients with Amoxicillin resistance from the first successful eradication group and the refractory infection of H. pylori group.

Interventions

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The result of H pylori culture based on gram staining and enzyme activity testing

This intervention aimed at patients with the positive result of 13C-urea breath test. Patients with negative result of H pylori culture was H pylori culture negative group. Patients with positive result of H pylori culture were belonged into the first successful eradication group and the refractory infection of H. pylori group.

Intervention Type DEVICE

The result of 13C-urea breath test after treatment based on the selection of clarithromycin, levofloxacin, metronidazole, amoxicillin,tetracycline,furazolidone and the dose of esomeprazole

The intervention focused on the results from the result of 13C-urea breath test after treatment. The first successful eradication group and the refractory infection of H. pylori group were treated according to the antibiotic susceptibility testing and CYP2C19 gene polymorphism. Eight weeks after treatment, a 13C-urea breath test was performed on patients. The first successful eradication group were patients with negative in 13C-urea breath tests in the first treatment. The refractory infection of H. pylori group were treatment failure patients with positive in 13C-urea breath tests after the second standardized treatment.

Intervention Type DEVICE

The result of Amoxicillin resistance in vitro based on antibiotic susceptibility testing

The intervention focused on the results from the result of Amoxicillin susceptibility testing in vitro. In this study, the investigators selected the patients with Amoxicillin resistance from the first successful eradication group and the refractory infection of H. pylori group.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Age 18\~70 years old, male or female, the first eradication therapy of H. pylori infection patients.
2. Symptoms of abdominal pain, bloating, acid efflux, belching, nausea, vomiting, heartburn, chest pain, vomiting, melena, etc.
3. Unused antibiotics, bismuth, H2 receptor antagonists or PPIs by nearly 4 weeks
4. 13C-labelled urea breath test positive.
5. Agreed to Helicobacter pylori culture and sensitivity testing taken by endoscopy gastric biopsy specimens,and the result of culture was positive.
6. Agreed to Helicobacter pylori eradication therapy and cooperate with the eradication efficacy follow-up survey.

Exclusion Criteria

1. Severe heart, liver, kidney dysfunction.
2. Pregnant or lactating women.
3. Complications of bleeding, perforation, pyloric obstruction, cancer.
4. Esophageal,gastrointestinal surgery history.
5. Patients can not properly express their complaints,such as psychosis, severe neurosis.
6. Taking nonsteroidal antiinflammatory drugs (NSAIDs) or alcohol abusers.
7. Allergic to penicillin or either drugs of the 6 antibiotic tested by susceptibility testing.
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Centers for Disease Control and Prevention, China

OTHER_GOV

Sponsor Role collaborator

Academy Military Medical Science, China

INDUSTRY

Sponsor Role collaborator

First Affiliated Hospital of Zhejiang University

OTHER

Sponsor Role collaborator

Taizhou Enze Medical Center Group

OTHER

Sponsor Role collaborator

Taizhou First People's Hospital

OTHER

Sponsor Role collaborator

The first people Hospital of Linhai

UNKNOWN

Sponsor Role collaborator

Affiliated Wenling Hospital of Wenzhou Medical University

OTHER

Sponsor Role collaborator

Sanmen People Hospital

UNKNOWN

Sponsor Role collaborator

Xianju People Hospital

UNKNOWN

Sponsor Role collaborator

Tiantai People Hospital

UNKNOWN

Sponsor Role collaborator

Yuhuan People Hospital

UNKNOWN

Sponsor Role collaborator

The second people Hospital of Yuhuan

UNKNOWN

Sponsor Role collaborator

Zhiyuan Medical Inspection Institute

OTHER

Sponsor Role collaborator

Taizhou Hospital

OTHER

Sponsor Role lead

Responsible Party

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Liping Ye

Director of the Department of Gastroenterology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Xianju People Hospital

Taizhou, Zhejiang, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Liping Ye, BSc

Role: CONTACT

13566866269

Facility Contacts

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Hong Li Lyh

Role: primary

13586202668

Other Identifiers

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TaizhouH

Identifier Type: -

Identifier Source: org_study_id

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