Predictors of Proton Pump Inhibitor (PPI) Response in Eosinophilic Esophagitis

April 18, 2012 updated by: Jeffrey A Alexander, Mayo Clinic

Predictors of PPI Response in Eosinophilic Esophagitis

The investigators will determine the prevalence of gastroesophageal reflux disease (GERD) in Eosinophilic Esophagitis (EoE) and importantly determine the predictors of response to Proton Pump Inhibitor (PPI) therapy in EoE. Moreover, the investigators will determine the effect of GERD on the location of esophageal eosinophilia.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Study Type

Interventional

Phase

  • Phase 2
  • Phase 1

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 to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 18 years of age < 80 years of age

  • 14 eosinophils / hpf on biopsies from esophagus

    • Abnormal validated Mayo dysphagia questionnaire (MDQ-30) (question 2"yes", question 4 > "moderate" and question 7 > "once a week")
    • Clinically performed EGD with > 14 eosinophils/hpf completed within last 3 months

Exclusion Criteria:

  • Other cause of dysphagia identified at endoscopy (e.g. stricture, web, infection, ring, achalasia, esophageal neoplasm)
  • Dilatation of esophagus at time of index endoscopy
  • Treatment with topical steroid within 3 months of index endoscopy
  • Treatment with PPI in last 30 days prior to index EGD

Patient population - adults with EoE recruited from Mayo Clinic Rochester, MN patient population

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: dexlansoprazole
Drug: dexlansoprazole
Dexlansoprazole 60 mg daily for 6 weeks
Other Names:
  • Dexilant

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prevalence of Gastroesophageal Reflux Disease
Time Frame: 24 hour
Prevalence of Gastroesophageal Reflux Disease (GERD) in Eosinophilic Esophagitis (EoE) Description: The definition of GERD is acid exposure time of >4.2% over 24 hour period, as measured by pH monitoring.
24 hour

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Heartburn/regurgitation
Time Frame: 30 day
Heartburn/regurgitation (as measured by:) Mayo Dysphagia Questionnaire - 30 Day Validated 28 item instrument; 0 = no dysphagia, higher levels indicate greater dysphagia severity. Dysphagia. 2010 Sep;25(3):221-30 Measured by "units on a scale"
30 day
Abnormal 24 hour acid exposure
Time Frame: 24 hour
Abnormal 24 hour acid exposure (as measured by pH monitoring) Description: A thin plastic catheter is passed through one nostril, down the back of the throat, and into the esophagus as the patient swallows. The tip of the catheter contains a sensor that senses acid. The catheter protruding from the nose is connected to a recorder that registers each reflux of acid. The catheter is in place for 24 hours, when is removed and the recorder is attached to a computer so that the data can be downloaded.
24 hour
Ratio of distal/proximal mean esophageal eosinophil number
Time Frame: 6 weeks
Ratio of distal/proximal mean esophageal eosinophil number (as measured by biopsies taken during esophagogastroduodenoscopy (EGD))
6 weeks
Mean distal eosinophil number
Time Frame: 6 weeks
Mean distal eosinophil number (as measured by biopsies taken during esophagogastroduodenoscopy (EGD) )
6 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Mayo Clinic

Investigators

  • Principal Investigator: Jeffrey A Alexander, MD, Mayo Clinic

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

March 1, 2012

Primary Completion (Actual)

March 1, 2012

Study Completion (Actual)

March 1, 2012

Study Registration Dates

First Submitted

November 22, 2011

First Submitted That Met QC Criteria

November 23, 2011

First Posted (Estimate)

November 24, 2011

Study Record Updates

Last Update Posted (Estimate)

April 19, 2012

Last Update Submitted That Met QC Criteria

April 18, 2012

Last Verified

April 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 11-003759

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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