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Efficacy of 10-day Concomitant Regimen Versus High Dose Dual Therapy in Anti-Helicobacter Pylori Rescue Therapy

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ClinicalTrials.gov Identifier: NCT01265069
Recruitment Status : Unknown
Verified May 2013 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
First Posted : December 22, 2010
Last Update Posted : June 3, 2013
Sponsor:
Collaborator:
National Science Council, Taiwan
Information provided by (Responsible Party):
National Taiwan University Hospital

Study Description
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Brief Summary:

Currently, a 10-day concomitant therapy has been reported to be equally effective and safe to the 10-day sequential therapy for 1st-line anti-Helicobacter pylori(H. pylori) therapy. To our knowledge, there has been no report concerning the efficacy of this regimen used as a rescue therapy.

The aims of this study are:

  1. to compare the efficacy of high dose dual therapy and concomitant therapy as rescue regimen in H. pylori eradication;
  2. to compare the patient adherence and adverse effects of these treatment regimens;
  3. to investigate factors that may influence H. pylori eradication by these treatment regimens.

Condition or disease Intervention/treatment Phase
Helicobacter Pylori Infection Drug: high dose dual therapy Drug: concomitant therapy Phase 4

Detailed Description:

Patients, aged 18, having H. pylori-positive chronic gastritis with/without peptic ulcers will be recruited. All undergo endoscopy with biopsy before treatment. Four to eight weeks after termination of treatment, H. pylori infection status will be examined by endoscopy with biopsy or the Carbon 13-urea breath test if the patients refuse the second endoscopy. The cytochrome P450 (CYP)2C19 genotype of each participant will be analyzed by the polymerase chain reaction-based restriction fragment length polymorphism (PCR-RFLP) method. A computed generated random numbers sequence will be blocked into two subgroups, say A and B.

If the patients had received anti-H. pylori therapy previously, they will be invited to enter the study for evaluating the efficacy of rescue regimens. After giving their written informed consent, all patients will be labeled with numbers by enrolling order. Each patient will be randomly allocated to one of two treatment groups which receives medications for 10 to 14 days:

group A - high dose dual therapy (rabeprazole 20 mg qid + amoxicillin 750 mg qid for 14 days); group B - concomitant therapy (rabeprazole 20 mg + amoxicillin 1000 mg + metronidazole 500 mg + clarithromycin 500 mg, bid for 10 days).

All patients will be asked to complete a questionnaire and to record symptoms and drug consumption daily in a diary card during the treatment period. Post-treatment, the patients will be seen at the Outpatient Clinic to investigate patient adherence and adverse effects of treatment.


Study Design
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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 204 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Efficacy of 10-day Concomitant Regimen Versus High Dose Dual Therapy in Anti-Helicobacter Pylori Rescue Therapy
Study Start Date : November 2010
Estimated Primary Completion Date : June 2013
Estimated Study Completion Date : December 2013
Arms and Interventions
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Arm Intervention/treatment
Active Comparator: high dose dual therapy
Group A - high dose dual therapy (rabeprazole 20 mg qid, amoxicillin 750 mg qid for 14 days)
 Drug: high dose dual therapy
rabeprazole 20mg qid,amoxicillin 750mg qid for 14days
Experimental: concomitant therapy
Group B - concomitant therapy (rabeprazole 20 mg, amoxicillin 1000 mg, metronidazole 500 mg, clarithromycin 500 mg, bid for 10 days).
 Drug: concomitant therapy
rabeprazole 20 mg,amoxicillin 1000 mg,metronidazole 500 mg,clarithromycin 500 mg, bid for 10 days


Outcome Measures
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Primary Outcome Measures :
  1. to compare the efficacy of 10-day concomitant regimen versus high dose dual therapy used as atni-Helicobacter pylori rescue therapy [ Time Frame: 1.5 years ]
    The eradication rates (efficacy) will be evaluated by intention-to-treat (ITT) and per-protocol (PP) analysis.


Secondary Outcome Measures :
  1. to compare the adverse effects and patient adherence of 10-day concomitant regimen versus high dose dual therapy used as atni-Helicobacter pylori rescue therapy [ Time Frame: 1.5 years ]
    The safety and tolerability will be evaluated by the number of participant with adverse events and patient adherence (by counting unused medication after the treatment and record symptoms in a diary card).


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • patients having H. pylori related chronic gastritis with/without peptic ulcers who are aged greater than 18 years and are willing to received eradication therapy.

Exclusion Criteria:

  • pregnant or nursing woman
  • serious concomitant illness and malignant tumor of any kind
  • history of hypersensitivity to test drugs
  • serious bleeding during the course of this ulcer
  • previous gastric surgery
  • receiving bismuth salts, proton pump inhibitors, or antibiotics in the previous month.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01265069


Contacts
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Contact: Jyh-Chin Yang, M.D.Ph.D 886-2-23123456 ext 65055 jcyang47@ntu.edu.tw

Locations
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Taiwan
National Taiwan University Hospital Recruiting
Taipei, Taiwan, 10043
Contact: Jyh-Chin Yang, M.D.Ph.D.    886-2-23123456 ext 65055    jcyang47@ntu.edu.tw   
Sponsors and Collaborators
National Taiwan University Hospital
National Science Council, Taiwan
Investigators
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Principal Investigator: Jyh-Chin Yang, M.D.Ph.D. National Taiwan University Hospital
More Information
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Responsible Party: National Taiwan University Hospital
ClinicalTrials.gov Identifier: NCT01265069     History of Changes
Other Study ID Numbers: 201005064M
First Posted: December 22, 2010    Key Record Dates
Last Update Posted: June 3, 2013
Last Verified: May 2013
Keywords provided by National Taiwan University Hospital:
Helicobacter pylori
concomitant therapy
high dose dual therapy
antibiotic resistance
Additional relevant MeSH terms:
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Amoxicillin
Rabeprazole
Anti-Bacterial Agents
Anti-Infective Agents
Anti-Ulcer Agents
 Gastrointestinal Agents
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action