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

This study has been withdrawn prior to enrollment.
(Souces of funding have been terminated)
Information provided by (Responsible Party):
Jeffrey A Alexander, Mayo Clinic Identifier:
First received: November 22, 2011
Last updated: April 18, 2012
Last verified: April 2012
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.

Condition Intervention Phase
Gastroesophageal Reflux Disease Eosinophilic Esophagitis Dysphagia Drug: dexlansoprazole Phase 1 Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Predictors of PPI Response in Eosinophilic Esophagitis

Resource links provided by NLM:

Further study details as provided by Jeffrey A Alexander, Mayo Clinic:

Primary Outcome Measures:
  • 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.

Secondary Outcome Measures:
  • 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"

  • 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.

  • 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))

  • Mean distal eosinophil number [ Time Frame: 6 weeks ]
    Mean distal eosinophil number (as measured by biopsies taken during esophagogastroduodenoscopy (EGD) )

Enrollment: 0
Study Start Date: March 2012
Study Completion Date: March 2012
Primary Completion Date: March 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: dexlansoprazole Drug: dexlansoprazole
Dexlansoprazole 60 mg daily for 6 weeks
Other Name: Dexilant


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01479231

Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Jeffrey A Alexander, MD Mayo Clinic
  More Information

Responsible Party: Jeffrey A Alexander, MD, Mayo Clinic Identifier: NCT01479231     History of Changes
Other Study ID Numbers: 11-003759
Study First Received: November 22, 2011
Last Updated: April 18, 2012

Keywords provided by Jeffrey A Alexander, Mayo Clinic:
Eosinophilic esophagitis
Proton pump inhibitor

Additional relevant MeSH terms:
Gastroesophageal Reflux
Deglutition Disorders
Eosinophilic Esophagitis
Esophageal Motility Disorders
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Pharyngeal Diseases
Otorhinolaryngologic Diseases
Leukocyte Disorders
Hematologic Diseases
Hypersensitivity, Immediate
Immune System Diseases
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Ulcer Agents
Gastrointestinal Agents processed this record on September 18, 2017