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Does Intensive Acid Suppression Reduce Esophageal Inflammation and Recurrent Barrett's Esophagus Following Ablation?

This study has been completed.
Information provided by (Responsible Party):
Prasad G. Iyer, Mayo Clinic Identifier:
First received: March 24, 2010
Last updated: February 19, 2016
Last verified: February 2016
The investigators hypothesize that intensive acid suppression with a long acting high potency proton pump inhibitor (PPI) drug dexlansoprazole will lead to a greater decrease in levels of inflammatory mediators (compared to conventional PPIs) in the esophagus, which could potentially lead to decreased recurrence of intestinal metaplasia following endoscopic ablation.

Condition Intervention Phase
Inflammation Barrett's Esophagus Drug: dexlansoprazole Drug: Omeprazole Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Does Intensive Acid Suppression Reduce Esophageal Inflammation and Recurrent Barrett's Esophagus Following Ablation?: A Randomized Controlled Trial

Resource links provided by NLM:

Further study details as provided by Prasad G. Iyer, Mayo Clinic:

Primary Outcome Measures:
  • Change in Inflammation Biomarker Tissue PGE2 Level [ Time Frame: 3 months, 6 months ]
    Change from baseline in esophageal tissue biopsy prostaglandin E2 (PGE2) level, as determined by enzyme immunoassay

  • Change in Esophageal Inflammation Biomarker COX-2 Gene Expression [ Time Frame: 3 months, 6 months ]
    Change from baseline in esophageal issue biopsy cyclooxygenase-2 (COX-2) gene expression, as determined by Western blot.

Enrollment: 30
Study Start Date: March 2010
Study Completion Date: November 2014
Primary Completion Date: November 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: dexlansoprazole
Participants will be treated with dexlansoprazole 60-90 mg/day for 6 months
Drug: dexlansoprazole
Intensive acid suppression with dexlansoprazole 60-90 mg/day for 6 months
Other Name: Dexilant
Active Comparator: omeprazole
Participants will be treated with omeprazole 20mg/day for a minimum of 6 weeks. If symptomatic can increase dose by 20mg twice.
Drug: Omeprazole
Escalating doses of omeprazole (20-60 mg/day) for 6 months
Other Name: Prilosec

Detailed Description:
Patients who achieve complete remission of intestinal metaplasia following ablation will be randomized (using concealed allocation, like the flip of a coin) to either intensive acid suppression with dexlansoprazole 60-90 mg/day or to symptom guided acid suppression with escalating doses of omeprazole (20-60 mg/day) for 6 months. Control of reflux will be assessed using 24 hour ambulatory pH monitoring. The need to escalate drug dosage at the 3 month visit will be determined by presence of excessive acid exposure on ambulatory pH monitoring. Biopsies of esophageal tissue will be obtained at baseline, then at 3 months and 6 months following randomization to measure changes in inflammatory biomarkers.

Ages Eligible for Study:   18 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Patients who have undergone ablation for Barrett's Esophagus (BE) and High Grade Dysplasia (HGD) or Low Grade Dysplasia (LGD) with Photodynamic Therapy (PDT)/Radiofrequency ablation and endoscopic mucosal resection who have no endoscopic and histologic evidence of specialized intestinal metaplasia on biopsies from the esophagus on two successive endoscopies post ablation will be offered enrollment in the study.

Inclusion criteria:

  1. Absence of intestinal metaplasia on endoscopy (under Narrow Band Imaging) and on histology (from biopsies taken from gastroesophageal junction and distal esophagus) on two successive surveillance endoscopies.
  2. Able to consent to study
  3. Males and females age 18-90
  4. Life expectancy of 5 years or greater.

Exclusion criteria:

  1. Pregnancy
  2. Inability to consent for the procedure
  3. Anticoagulation therapy precluding performance of ambulatory pH monitoring and/or biopsies
  4. Intolerance to proton pump inhibitors
  5. Elevation in Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), (liver enzymes), bilirubin or alkaline phosphatase more than five times the upper limit of normal.
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Please refer to this study by its identifier: NCT01093755

United States, Minnesota
Mayo Clinic in Rochester
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Prasad Iyer, MD Mayo Clinic
  More Information

Responsible Party: Prasad G. Iyer, MD, Mayo Clinic Identifier: NCT01093755     History of Changes
Other Study ID Numbers: 09-007252
Study First Received: March 24, 2010
Results First Received: February 19, 2016
Last Updated: February 19, 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Keywords provided by Prasad G. Iyer, Mayo Clinic:
Barrett's Esophagus
Radiofrequency ablation
Patients post-radiofrequency ablation for Barrett's Esophagus.

Additional relevant MeSH terms:
Barrett Esophagus
Pathologic Processes
Digestive System Abnormalities
Digestive System Diseases
Esophageal Diseases
Gastrointestinal Diseases
Anti-Ulcer Agents
Gastrointestinal Agents
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action processed this record on September 21, 2017