- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00162877
The Role of CYP2C19 on the Eradication of H. Pylori Infection:Implication of PK/PD Relationships
November 22, 2005 updated by: National Taiwan University Hospital
The Role of CYP2C19 Poor Metabolizers and Extensive Metabolizers of PPI in Short-Term Triple Therapy on the Eradication of H. Pylori Infection: Implication of PK/PD Relationships
The objective of this trial is to find the rationale and the optimal dose and duration of regimen for the eradication of H. pylori infection using different proton pump inhibitors.
Study Overview
Status
Unknown
Intervention / Treatment
Detailed Description
Helicobacter pylori in known to be closely associated with the pathogenesis of gastroduodenal disorders such as peptide ulcer.
Eradication of this bacterium is important in the treatment of these diseases as well as in the reduction of the recurrence.
The one-week triple therapy with proton pump inhibitors (PPIs) is now considered to be the standard therapies in the treatment of Helicobacter pylori infection, providing more than 80% eradication rates with few adverse effects.
PPIs are mainly metabolized by CYP2C19, which is known to exhibit polymorphisms in both its genotype and phenotype.
Based on the PK/PD results of our study on PPI, recently, we have proposed that CYP2C19 poor metabolizers might be subject to advantageous conditions, especially after day-4, for the treatment of H. pylori infection when 20 mg rabeprazole was given twice daily.
Our results also suggest a possibility to start the triple therapy on day-4 of rabeprazole treatment to ensure the optimal acid suppression effect for antibiotics to exert the bacteriocidal effect.
To find the rationale and the optimal dosing regimen for the eradication of H. pylori infection using different proton pump inhibitors, volunteers of four groups would be included in this study.
PPI (rabeprazole or esomeprazole) is given for 7 days.
Antibiotics are given starting from day-1 or day-4 of PPI dosing.
The eradication rate of H. pylori infection and the PK/PD of PPIs are also evaluated.
Study Type
Interventional
Enrollment
80
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 Locations
-
-
-
Taipei, Taiwan, 100
- Department of Internal Medicine, National Taiwan University Hospital
-
-
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 and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male and female dyspeptic patients with H. pylori-positive peptic ulcer or gastritis will be recruited at the university hospital in this study.
Exclusion Criteria:
- 1)Pregnant or lactating female;*2)Patients have endoscopy-based evidence of gastric malignancy, pyloric obstruction, and esophageal stricture requiring dilation, fresh clot, active bleeding, or perforated ulcers;3)Patients requiring anticoagulants or corticosteroid therapy (at dosages greater than the equivalent of prednisone, 10 mg/day);4)Patients with significant impairment of renal function (creatinine>2mg/dl); liver function impairment (AST and ALT 2x upper limit of normal); severe cardiac disease, e.g. angina pectoris, myocardial infarction, cardiac arrhythmia, congestive heart failure (New York Heart Association Functional Classification III and IV) or acute respiratory disease;5)Patients with a history of esophageal and/or gastric varices;6)Use of other investigational drugs within 30 days prior to the study.
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: Crossover Assignment
- Masking: None (Open Label)
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
---|
the role of CYP2C19 on the eradication of H. pylori infection
|
Secondary Outcome Measures
Outcome Measure |
---|
implication of PK/PD relationships
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Jyh-Chin Yang, M.D., Department of Internal Medicine, National Taiwan University Hospital
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, 2004
Study Completion
April 1, 2005
Study Registration Dates
First Submitted
September 12, 2005
First Submitted That Met QC Criteria
September 12, 2005
First Posted (Estimate)
September 13, 2005
Study Record Updates
Last Update Posted (Estimate)
November 23, 2005
Last Update Submitted That Met QC Criteria
November 22, 2005
Last Verified
January 1, 2004
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Digestive System Diseases
- Pathologic Processes
- Disease Attributes
- Gastrointestinal Diseases
- Stomach Diseases
- Gastroenteritis
- Intestinal Diseases
- Gram-Negative Bacterial Infections
- Bacterial Infections
- Bacterial Infections and Mycoses
- Duodenal Diseases
- Gastritis
- Infections
- Communicable Diseases
- Helicobacter Infections
- Peptic Ulcer
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Gastrointestinal Agents
- Anti-Ulcer Agents
- Proton Pump Inhibitors
- Rabeprazole
- Esomeprazole
Other Study ID Numbers
- 920505
- NTUH93S060
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 Peptic Ulcer With H. Pylori Infection
-
Chinese University of Hong KongCompletedBacterial Infection Due to Helicobacter Pylori (H. Pylori) | Peptic Ulcer BleedingChina
-
Hamamatsu UniversityCompletedGastric Ulcer | H. Pylori Infection | Duodnal UlcerJapan
-
Ostfold Hospital TrustUniversity Hospital, AkershusCompletedPeptic Ulcer | Bleeding Ulcer | Bacterial Infection Due to Helicobacter Pylori (H. Pylori)Norway
-
University of NottinghamUniversity of Oxford; Nottingham University Hospitals NHS Trust; University of... and other collaboratorsCompletedBacterial Infection Due to Helicobacter Pylori (H. Pylori) | Gastrointestinal Ulcer HaemorrhageUnited Kingdom
-
Shahid Sadoughi University of Medical Sciences...CompletedDyspepsia | Peptic Ulcer | H-pyloriIran, Islamic Republic of
-
Assistance Publique - Hôpitaux de ParisUnknownH Pylori Eradication | H Pylori Infection Eradication | Antibiotics Therapeutic StrategiesFrance
-
National Taiwan University HospitalUnknown
-
Chuncheon Sacred Heart HospitalCompletedGastric Ulcer Associated With Helicobacter PyloriKorea, Republic of
-
Assiut UniversityNot yet recruiting
-
Assiut UniversityUnknownH Pylori Infection
Clinical Trials on Rabeprazole vs. Esomeprazole
-
TakedaCompletedHealthy VolunteersJapan
-
Hamamatsu UniversityCompletedH. Pylori InfectionJapan
-
American University of Beirut Medical CenterAstraZenecaCompletedCalcium Metabolism DisordersLebanon
-
Eisai Inc.CompletedGastroesophageal Reflux Disease (GERD)Chile, Canada, United States, Estonia, India, Hungary, Bulgaria, Croatia, Australia, Lithuania, Latvia, Argentina, France, Germany
-
Eisai Inc.CompletedGastroesophageal Reflux Disease (GERD)United States
-
Eisai Inc.CompletedGastroesophageal Reflux Disease (GERD)Canada, Chile, Hungary, Bulgaria, Estonia, Latvia, United States, Croatia, Australia, India, Argentina, France, Germany
-
Changi General HospitalUnknownHelicobacter Pylori InfectionSingapore
-
IBSA Institut Biochimique SACompletedHypothyroidism;PostablativeUnited States
-
Janssen-Cilag Pty LtdCompleted