- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02741414
A Multi-center Study for Eradication of Refractory Helicobacter Pylori
July 10, 2016 updated by: Liping Ye, Taizhou Hospital
Construction and Application of the Treatment of Refractory Helicobacter Pylori Infection Based on the High-throughput Sequencing Technologies
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.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
- Device: The result of H pylori culture based on gram staining and enzyme activity testing
- 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
- Device: The result of Amoxicillin resistance in vitro based on antibiotic susceptibility testing
Study Type
Interventional
Enrollment (Anticipated)
4428
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Liping Ye, BSc
- Phone Number: 13566866269
- Email: yelp@enzemed.com
Study Locations
-
-
Zhejiang
-
Taizhou, Zhejiang, China, 317300
- Recruiting
- Xianju People Hospital
-
Contact:
- Hong Li Lyh
- Phone Number: 13586202668
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 70 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Age 18~70 years old, male or female, the first eradication therapy of H. pylori infection patients.
- Symptoms of abdominal pain, bloating, acid efflux, belching, nausea, vomiting, heartburn, chest pain, vomiting, melena, etc.
- Unused antibiotics, bismuth, H2 receptor antagonists or PPIs by nearly 4 weeks
- 13C-labelled urea breath test positive.
- Agreed to Helicobacter pylori culture and sensitivity testing taken by endoscopy gastric biopsy specimens,and the result of culture was positive.
- Agreed to Helicobacter pylori eradication therapy and cooperate with the eradication efficacy follow-up survey.
Exclusion Criteria:
- Severe heart, liver, kidney dysfunction.
- Pregnant or lactating women.
- Complications of bleeding, perforation, pyloric obstruction, cancer.
- Esophageal,gastrointestinal surgery history.
- Patients can not properly express their complaints,such as psychosis, severe neurosis.
- Taking nonsteroidal antiinflammatory drugs (NSAIDs) or alcohol abusers.
- Allergic to penicillin or either drugs of the 6 antibiotic tested by susceptibility testing.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: H pylori culture negative group
The patients who have the negative result of H pylori culture were classified into H pylori culture negative group.
|
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.
|
Experimental: 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.
|
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 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 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.
|
Experimental: 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.
|
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 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 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.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The eradication rate of H. pylori reach to 95% in all groups
Time Frame: 1 year
|
1 year
|
The microflora structure of a total of 240 patients in the first successful eradication group and the refractory infection of H. pylori group
Time Frame: Three months
|
Three months
|
The proportion of mix infection of H pylori in a total of 240 patients in two groups
Time Frame: Three months
|
Three months
|
The number of single nucleotide varation(SNV)of 20 patients in the first successful eradication group and the refractory infection of H. pylori group that are related to Amoxicillin resistance
Time Frame: Three months
|
Three months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
June 1, 2016
Primary Completion (Anticipated)
April 1, 2018
Study Completion (Anticipated)
December 1, 2018
Study Registration Dates
First Submitted
March 25, 2016
First Submitted That Met QC Criteria
April 12, 2016
First Posted (Estimate)
April 18, 2016
Study Record Updates
Last Update Posted (Estimate)
July 12, 2016
Last Update Submitted That Met QC Criteria
July 10, 2016
Last Verified
March 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Digestive System Diseases
- Gastrointestinal Diseases
- Stomach Diseases
- Gastroenteritis
- Gastritis
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents, Local
- Anti-Infective Agents
- Enzyme Inhibitors
- Antineoplastic Agents
- Gastrointestinal Agents
- Topoisomerase II Inhibitors
- Topoisomerase Inhibitors
- Cytochrome P-450 CYP3A Inhibitors
- Cytochrome P-450 Enzyme Inhibitors
- Protein Synthesis Inhibitors
- Antiprotozoal Agents
- Antiparasitic Agents
- Anti-Ulcer Agents
- Proton Pump Inhibitors
- Monoamine Oxidase Inhibitors
- Cytochrome P-450 CYP1A2 Inhibitors
- Anti-Infective Agents, Urinary
- Renal Agents
- Antitrichomonal Agents
- Metronidazole
- Anti-Bacterial Agents
- Amoxicillin
- Clarithromycin
- Levofloxacin
- Ofloxacin
- Esomeprazole
- Tetracycline
- Furazolidone
Other Study ID Numbers
- TaizhouH
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Gastritis
-
Daewoong Pharmaceutical Co. LTD.CompletedAcute Gastritis | Chronic GastritisKorea, Republic of
-
Addpharma Inc.CompletedAcute Gastritis | Chronic GastritisKorea, Republic of
-
Chong Kun Dang PharmaceuticalCompletedAcute Gastritis | Chronic GastritisKorea, Republic of
-
Dong-A ST Co., Ltd.UnknownAcute Gastritis | Chronic GastritisKorea, Republic of
-
Instituto Ecuatoriano de Enfermedades DigestivasCompletedGastritis | Atrophic Gastritis | Helicobacter Pylori Associated GastritisEcuador
-
Dong-A ST Co., Ltd.RecruitingGastritis Acute | Gastritis ChronicKorea, Republic of
-
Korea Otsuka Pharmaceutical Co., Ltd.RecruitingAcute Gastritis | Chronic GastritisKorea, Republic of
-
Dong-A ST Co., Ltd.CompletedAcute Gastritis | Chronic GastritisKorea, Republic of
-
Dong-A Pharmaceutical Co., Ltd.UnknownAcute Gastritis | Chronic GastritisKorea, Republic of
-
Peking University First HospitalRecruitingChronic Atrophic GastritisChina
Clinical Trials on The result of H pylori culture based on gram staining and enzyme activity testing
-
Sanmen People's HospitalThe First Affiliated Hospital with Nanjing Medical University; Wenzhou Central... and other collaboratorsUnknown
-
Seoul National University Bundang HospitalTerminatedHelicobacter InfectionKorea, Republic of
-
Rabin Medical CenterTel Aviv University; The Leona M. and Harry B. Helmsley Charitable TrustRecruiting