- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01404832
The Frequency of Eosinophilic Esophagitis in Patients With Heartburn That is Refractory to Proton Pump Inhibitors
Background: Up to 40% of patients who are treated with PPIs for symptoms that are thought to be due to GERD experience only incomplete relief of their symptoms. Those patients are deemed "PPI failures." Esophageal pH monitoring studies have shown that PPI failure rarely is due to persistent acid reflux. Recently, heartburn that is refractory to treatment with PPIs has been described in patients with eosinophilic esophagitis, a disorder of unknown etiology in which eosinophils infiltrate the squamous epithelium of the esophagus, where they cause symptoms and tissue injury. Presently, it is not clear how often eosinophilic esophagitis underlies PPI failure for patients with GERD symptoms.
Purpose: To estimate the frequency with which eosinophilic esophagitis is the cause of "PPI failure" in patients thought to have heartburn due to GERD.
Methods: Patients referred to the Division of Gastroenterology at the Dallas VA Medical Center for the evaluation of heartburn that is refractory to PPI therapy will be invited to participate in the study. Patients who provide informed consent will have a medical history taken. Women of child bearing potential will have a pregnancy test. The patients' current PPI therapy will be discontinued, and patients will be treated with lansoprazole 30 mg BID for one week. The patient will return to the clinic one week later. Patients who feel that their heartburn has not improved by more than 50% from baseline will have an endoscopic evaluation. During the endoscopic examination, biopsy specimens will be taken as follows: A. Two specimens from the proximal esophagus at 20 cm from the incisor teeth. B. Two specimens from the mid-esophagus at 28 cm from the incisor teeth. C. Two specimens from the distal esophagus, 3 cm above the squamo-columnar junction. D. Two specimens from the distal esophagus, 1 cm above the squamo-columnar junction. E. Two specimens from the second portion of the duodenum (to see if the eosinophilia is confined to the esophagus, or part of a more extensive eosinophilic gastroenteritis). A diagnosis of eosinophilic esophagitis will be made if there is at least one high-power field with >25 eosinophils, or two or more high-power fields with >15 eosinophils.
Potential Benefits: This study will provide an estimate on the frequency with which eosinophilic esophagitis is the cause of "PPI failure" in patients thought to have heartburn due to GERD. This has substantial potential importance for patient management.
Study Overview
Status
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
Texas
-
Dallas, Texas, United States, 75216
- Dallas VA Medical Center
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:Male and female patients ages 18 years and older who are referred to the Division of Gastroenterology at the Dallas VA Medical Center for the evaluation of heartburn that is refractory to PPI therapy
Exclusion Criteria:
- Patients unwilling or unable to provide informed consent.
- Allergy to lansoprazole.
- Patients taking warfarin.
- Coagulopathy that precludes safe biopsy of the esophagus.
- Comorbidity that precludes safe participation in the study.
- Pregnancy.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Number of Participants With Eosinophilic Esophagitis
Time Frame: 8 weeks
|
8 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Patients Who Had Resolution of Heartburn With Lansoprazole
Time Frame: After 8 weeks of treatment
|
Resolution of heartburn defined as >50% improvement in symptoms
|
After 8 weeks of treatment
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Digestive System Diseases
- Immune System Diseases
- Hypersensitivity, Immediate
- Hematologic Diseases
- Signs and Symptoms, Digestive
- Gastrointestinal Diseases
- Gastroenteritis
- Hypersensitivity
- Esophageal Motility Disorders
- Deglutition Disorders
- Esophageal Diseases
- Leukocyte Disorders
- Eosinophilia
- Gastroesophageal Reflux
- Eosinophilic Esophagitis
- Heartburn
- Esophagitis
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Gastrointestinal Agents
- Anti-Ulcer Agents
- Proton Pump Inhibitors
- Dexlansoprazole
- Lansoprazole
Other Study ID Numbers
- VAIRB06-093
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.
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