High Dose Amoxicillin Versus Tetracycline as Second-line Treatment of Resistant Helicobacter Pylori Infection
Primary Purpose
Helicobacter Pylori Treatment Failure
Status
Completed
Phase
Phase 4
Locations
China
Study Type
Interventional
Intervention
Lansoprazole
Bismuth Potassium Citrate
Metronidazole
Amoxicillin
Tetracycline
Sponsored by
About this trial
This is an interventional treatment trial for Helicobacter Pylori Treatment Failure focused on measuring Helicobacter pylori, Treatment Failure, second-line therapy
Eligibility Criteria
Inclusion Criteria:
- all patients had failed H.pylori therapies including clarithromycin, metronidazole and/or amoxicillin (if not allergic) before
- indication of rescue H pylori eradication treatment
- Ability and willingness to participate in the study and to sign and give informed consent
Exclusion Criteria:
- patients less than 18 years old
- previous gastric surgery
- pregnancy or lactation
- major systemic diseases,
- administration of antibiotics, bismuth, antisecretory drugs in the preceding 8 weeks
- allergy to any one of the medication used in the quadruple regimens.
Sites / Locations
- Shanghai Renji Hospital, Shanghai Jiao-Tong University School of Medicine
Arms of the Study
Arm 1
Arm 2
Arm Type
Experimental
Active Comparator
Arm Label
High Dose Amoxicillin
Tetracycline
Arm Description
High dose amoxicillin/metronidazole-based quadruple therapy for 14 days: Lansoprazole 30mg bid, Bismuth Potassium Citrate 220mg bid, Amoxicillin 1000mg tid, Metronidazole 400mg qid
Classical quadruple therapy for 14 days: Lansoprazole 30mg bid, Bismuth Potassium Citrate 220mg bid, Tetracycline 500mg qid, Metronidazole 400mg qid
Outcomes
Primary Outcome Measures
Eradication rate of Helicobacter pylori
Access eradication rate of H. pylori by intention to treat (ITT) and per-protocol (PP) analysis in each treatment group
Secondary Outcome Measures
Frequency of side effects of each treatment
Score side effects as mild, moderate or severe according to their influence on daily activities
Full Information
NCT ID
NCT02175927
First Posted
June 24, 2014
Last Updated
February 29, 2016
Sponsor
Shanghai Jiao Tong University School of Medicine
1. Study Identification
Unique Protocol Identification Number
NCT02175927
Brief Title
High Dose Amoxicillin Versus Tetracycline as Second-line Treatment of Resistant Helicobacter Pylori Infection
Official Title
Prospective, Randomized Controlled Trial Comparing High Dose Amoxicillin Versus Tetracycline Based Quadruple Therapy as Second-line Treatment for Resistant Helicobacter Pylori Infection
Study Type
Interventional
2. Study Status
Record Verification Date
December 2015
Overall Recruitment Status
Completed
Study Start Date
July 2014 (undefined)
Primary Completion Date
October 2015 (Actual)
Study Completion Date
October 2015 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Shanghai Jiao Tong University School of Medicine
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
No trial has examined the the efficacy of high dose amoxicillin based quadruple therapy as second-line treatment for Helicobacter pylori infection. The study aims to compare the effectiveness and safety of 14-day high dose amoxicillin-based quadruple regiment with classical quadruple regiment for rescue eradication of Helicobacter pylori.
Detailed Description
Helicobacter pylori is the most successful human pathogen infecting an estimated 50% of the global population, and is associated with a spectrum of disease states, including chronic gastritis, duodenal and gastric ulcer, gastric adenocarcinoma, and gastric mucosa-associated lymphoid tissue lymphoma (MALToma).
Most Consensus Conferences and Clinical Guidelines recommend the prescription of a triple therapy including a proton pump inhibitor (PPI) and clarithromycin with either amoxicillin or metronidazole, as first-line treatment. However, the effectiveness of these triple-therapy regimens seems to have diminished over time, largely as a result of emerging resistance of the organism to clarithromycin. Avoiding problems due to antibiotic resistance has become an important issue when deciding a second-line rescue therapy for H. pylori infection
Bismuth-containing quadruple therapies have been used widely in second-line therapy of H. pylori infection, and are recommended by the Maastricht IV Consensus Conference report. Quadruple therapy can achieve a high rate of eradication success as a second-line treatment. A meta-analysis of quadruple therapy showed that metronidazole resistance had limited effect on the outcome when adequate dosages and durations are used. This meta-analysis also showed that compliance with quadruple therapy is high. Classical bismuth-based quadruple therapy consists of a PPI, bismuth, tetracycline and metronidazole. This regiment meets the proposed criteria for a second-line treatment: it does not contain the key antibiotic of the original regimen (clarithromycin), the treatment is not affected by clarithromycin resistance, metronidazole resistance in vitro does not affect the outcome of quadruple therapy significantly, compliance with the regimen is high and the regimen is effective in most parts of the world. But this regiment has high rate of side effects because of tetracycline.
Amoxicillin has low resistance rate as well as low percentage of side effects. The replacement of tetracycline by high dose amoxicillin in classical bismuth-containing quadruple therapy may be a better choice. Therefore, we will do a randomized trial to compare the eradication rate of 14-day high dose amoxicillin and metronidazole based bismuth-containing quadruple therapy with classical quadruple therapy for second-line Helicobacter pylori treatment.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Helicobacter Pylori Treatment Failure
Keywords
Helicobacter pylori, Treatment Failure, second-line therapy
7. Study Design
Primary Purpose
Treatment
Study Phase
Phase 4
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
312 (Actual)
8. Arms, Groups, and Interventions
Arm Title
High Dose Amoxicillin
Arm Type
Experimental
Arm Description
High dose amoxicillin/metronidazole-based quadruple therapy for 14 days: Lansoprazole 30mg bid, Bismuth Potassium Citrate 220mg bid, Amoxicillin 1000mg tid, Metronidazole 400mg qid
Arm Title
Tetracycline
Arm Type
Active Comparator
Arm Description
Classical quadruple therapy for 14 days: Lansoprazole 30mg bid, Bismuth Potassium Citrate 220mg bid, Tetracycline 500mg qid, Metronidazole 400mg qid
Intervention Type
Drug
Intervention Name(s)
Lansoprazole
Other Intervention Name(s)
proton pump inhibitor
Intervention Description
antisecretory drug of each quadruple therapy
Intervention Type
Drug
Intervention Name(s)
Bismuth Potassium Citrate
Other Intervention Name(s)
Bismuth
Intervention Description
one component of each quadruple therapy
Intervention Type
Drug
Intervention Name(s)
Metronidazole
Other Intervention Name(s)
antibiotic
Intervention Description
antibiotic of each quadruple therapy
Intervention Type
Drug
Intervention Name(s)
Amoxicillin
Other Intervention Name(s)
antibiotic
Intervention Description
antibiotic of high dose amoxicillin based quadruple therapy
Intervention Type
Drug
Intervention Name(s)
Tetracycline
Other Intervention Name(s)
antibiotic
Intervention Description
antibiotic of classical quadruple therapy
Primary Outcome Measure Information:
Title
Eradication rate of Helicobacter pylori
Description
Access eradication rate of H. pylori by intention to treat (ITT) and per-protocol (PP) analysis in each treatment group
Time Frame
2 months
Secondary Outcome Measure Information:
Title
Frequency of side effects of each treatment
Description
Score side effects as mild, moderate or severe according to their influence on daily activities
Time Frame
2 months
Other Pre-specified Outcome Measures:
Title
Minimal inhibitory concentrations (MIC) of antibiotics against each helicobacter pylori clinical isolate
Description
Determine MIC of amoxicillin, tetracycline, and metronidazole by the twofold agar dilution method.
Time Frame
2 months
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
all patients had failed H.pylori therapies including clarithromycin, metronidazole and/or amoxicillin (if not allergic) before
indication of rescue H pylori eradication treatment
Ability and willingness to participate in the study and to sign and give informed consent
Exclusion Criteria:
patients less than 18 years old
previous gastric surgery
pregnancy or lactation
major systemic diseases,
administration of antibiotics, bismuth, antisecretory drugs in the preceding 8 weeks
allergy to any one of the medication used in the quadruple regimens.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Hong Lu, M.D.
Organizational Affiliation
RenJi Hospital
Official's Role
Principal Investigator
Facility Information:
Facility Name
Shanghai Renji Hospital, Shanghai Jiao-Tong University School of Medicine
City
Shanghai
State/Province
Shanghai
ZIP/Postal Code
200127
Country
China
12. IPD Sharing Statement
Citations:
PubMed Identifier
22491499
Citation
Malfertheiner P, Megraud F, O'Morain CA, Atherton J, Axon AT, Bazzoli F, Gensini GF, Gisbert JP, Graham DY, Rokkas T, El-Omar EM, Kuipers EJ; European Helicobacter Study Group. Management of Helicobacter pylori infection--the Maastricht IV/ Florence Consensus Report. Gut. 2012 May;61(5):646-64. doi: 10.1136/gutjnl-2012-302084.
Results Reference
background
PubMed Identifier
23778309
Citation
Lu H, Zhang W, Graham DY. Bismuth-containing quadruple therapy for Helicobacter pylori: lessons from China. Eur J Gastroenterol Hepatol. 2013 Oct;25(10):1134-40. doi: 10.1097/MEG.0b013e3283633b57.
Results Reference
background
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High Dose Amoxicillin Versus Tetracycline as Second-line Treatment of Resistant Helicobacter Pylori Infection
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