- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02546219
a4b7 Integrin in Eosinophilic Esophagitis
February 19, 2019 updated by: John J. Garber III, MD, Massachusetts General Hospital
Investigating the Role of a4b7 Integrin as a Therapeutic Target in Eosinophilic Esophagitis
The overall objective of this preclinical study is to further the investigators mechanistic understanding of the role that the α4β7 and mucosal addressin cell adhesion molecule (MAdCAM-1) pathway plays in mediating eosinophil recruitment in EoE.
To accomplish this, the investigators aim to (1) determine the baseline and dynamic patterns of α4β7 integrin expression on circulating and tissue eosinophils in EoE and in the setting of non-EoE esophageal eosinophilia (e.g., reflux esophagitis) and (2) determine the complete profile of eosinophil integrin molecules that may play a role in active EoE.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Observational
Enrollment (Actual)
16
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
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Massachusetts
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Boston, Massachusetts, United States, 02114
- Massachusetts General Hospital
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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
Sampling Method
Non-Probability Sample
Study Population
Adult patients with active eosinophilic esophagitis
Description
Inclusion Criteria:
- Able to give written informed consent
- Male or female patients aged 18-65 years at time of screening
- Confirmed active EoE at screening or within 8 weeks prior to baseline visit, as defined by esophageal mucosal eosinophils ≥15 per high power field (HPF, 400X magnification) despite at least 4 weeks of proton pump inhibitor (PPI) therapy with omeprazole 20 mg twice daily or the equivalent. updated 14APR2015 Page 8 of 19
- Within the week prior to dosing, patient has one of the following symptoms of moderate, or worse, severity: dysphagia, vomiting, regurgitation, abdominal pain, chest pain/heartburn.
- Maintained on a stabilized diet for at least 6 weeks prior to screening and during the course of the study; stable diet is defined as no initiation of single or multiple elimination diets or reintroduction of previously eliminated food groups.
- Willing and able to comply with all clinic visits and study-related procedures
- Able to understand and complete study-related questionnaires
Exclusion Criteria:
- Another disorder that causes esophageal eosinophilia (e.g., hypereosinophilic syndrome, Churg-Strauss, parasitic infection)
- History of abnormal gastric or duodenal biopsy or documented GI disorders other than EoE (e.g., celiac disease, Crohn's disease or H. pylori infection)
- History of the following GI surgeries: fundoplication, gastric surgery or surgery for esophageal atresia
- Use of systemic immunosuppressive or immunomodulating agents (oral prednisone, anti-immunoglobulin E (IgE) monoclonal antibody (mAb), methotrexate, cyclosporine, INFα, or anti-TNF) within six months prior to study entry.
- A stricture on endoscopy that prevents passage of the endoscope
- Participation in any investigational drug or device study within 30 days prior to study entry.
- Female subjects who are pregnant or nursing.
- Chronic infections such as HIV, hepatitis B or C, active mycobacterial (TB) or fungal infections.
- Neoplasm or a history of malignancy in the preceding 5 years.
- Concurrent infection or disease that may preclude assessment of eosinophilic esophagitis.
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
- Observational Models: Other
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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Adults with EoE
Adult patients with active eosinophilic esophagitis will under blood collection and esophagus biopsies in order to perform eosinophil isolation and characterization.
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Peripheral blood and esophageal biopsies will be obtained from study subjects for further analysis of eosinophils integrin profiles.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of eosinophils expressing a4b7 integrin
Time Frame: 8 weeks
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Eosinophil expression levels of a4b7 integrin will be assessed on peripheral and esophageal eosinophils during active EoE and after treatment-induced remission.
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8 weeks
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: John J Garber, MD, Massachusetts General 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 (Actual)
March 1, 2016
Primary Completion (Actual)
December 31, 2018
Study Completion (Actual)
December 31, 2018
Study Registration Dates
First Submitted
September 8, 2015
First Submitted That Met QC Criteria
September 9, 2015
First Posted (Estimate)
September 10, 2015
Study Record Updates
Last Update Posted (Actual)
February 21, 2019
Last Update Submitted That Met QC Criteria
February 19, 2019
Last Verified
February 1, 2019
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2015P000816
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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