Clinical trial NCT01163435: Efficacy of High Dose Dual Therapy, Sequential Therapy and Triple Therapy in H. Pylori Eradication
Official title: Efficacy of High Dose Dual Therapy, Sequential Therapy and Triple Therapy in H. Pylori Eradication - A Prospective, Comparative Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Helicobacter Infection
Keywords: Helicobacter pylori
antibiotic resistance
high dose dual therapy
sequential therapy
clarithromycin-based triple therapy
levofloxacin-based triple therapy
Lead sponsor: National Taiwan University Hospital
Sponsor class: OTHER
Collaborators: name: National Science and Technology Council, Taiwan
First posted: 2010-07-15
Enrollment: 618
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Up to now, to our knowledge, there is few randomized, large scale study prospectively and simultaneously comparing the efficacy, adverse effects and patient adherence of these current recommended 1st-line or 2nd-line regimens for H. pylori eradication in and out of our country.

The aims of this study are:

1. to compare the efficacy of high dose dual therapy, sequential therapy and clarithromycin-based triple therapy as 1st-line regimen in H. pylori eradication;
2. to compare the efficacy of high dose dual therapy, sequential therapy and levofloxacin-based triple therapy as rescue regimen in H. pylori eradication;
3. to compare the patient adherence and adverse effects of these treatment regimens;
4. to investigate factors that may influence H. pylori eradication by these treatment regimens;
5. to investigate and analyze the prevalence and trend of antibiotic resistance.

Detailed description: Patients 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 three subgroups, say A1, B1 and C1 (or A2, B2, and C2).

If the patients did not receive anti-H. pylori therapy previously, they will be invited to enter the first part of study for evaluating the efficacy of 1st-line regimens. If the patients had received anti-H. pylori therapy previously, they will be invited to enter the second part of study for evaluating the efficacy of rescue regimens. Patients who meet the inclusion criteria and do not have any one of the exclusion criteria will be randomized to receive one of the following regimens:

* for 1st-line regimens: group A1 - high dose dual therapy (rabeprazole 20 mg qid + amoxicillin 750 mg qid for 14 days); group B1 - sequential therapy (rabeprazole 20 mg + amoxicillin 1000 mg, bid for 5 days, then rabeprazole 20 mg + metronidazole 500 mg + clarithromycin 500 mg, bid for next 5 days); group C1 - clarithromycin-based triple therapy (rabeprazole 20 mg + amoxicillin 1000 mg + clarithromycin 500 mg, bid for 7 days).
* for rescue regimens: group A2 - high dose dual therapy (as group A1); group B2 - sequential therapy (as group B1); group C2 - levofloxacin-based triple therapy (rabeprazole 20 mg + amoxicillin 1000 mg + levofloxacin 250 mg, bid for 7 days).

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

Eligibility 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.

Primary outcomes:
measure: to compare the efficacy, adverse effects and patient adherence of high dose dual therapy, sequential therapy and clarithromycin-based triple therapy (or levofloxacin-based triple therapy) as 1st-line regimen (or rescue regimen) in H. pylori eradication
timeFrame: 3.5 years
Secondary outcomes:
Other outcomes:
Locations:
city: Taipei
country: Taiwan
facility: National Taiwan University Hospital
Study officials:
affiliation: National Taiwan University Hospital
name: Jyh-Chin Yang, M.D.Ph.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Yang JC, Lin CJ, Wang HL, Chen JD, Kao JY, Shun CT, Lu CW, Lin BR, Shieh MJ, Chang MC, Chang YT, Wei SC, Lin LC, Yeh WC, Kuo JS, Tung CC, Leong YL, Wang TH, Wong JM. High-dose dual therapy is superior to standard first-line or rescue therapy for Helicobacter pylori infection. Clin Gastroenterol Hepatol. 2015 May;13(5):895-905.e5. doi: 10.1016/j.cgh.2014.10.036. Epub 2014 Nov 14.