Acetic Acid Guided Biopsies Compared With High Definition Endoscopy in the Detection of Barrett's Esophagus

September 27, 2011 updated by: Hoffman Arthur, Johannes Gutenberg University Mainz

Acetic Acid Guided Biopsies Compared With High Definition Endoscopy

Specialized columnar epithelium (SCE) is considered as pathognomonic for Barrett's esophagus. Chromoendoscopy after local acetic acid application enables recognition of the mucosal surface architecture. The new available EPKi processor (Pentax, Japan) enables HD+ resolution above HDTV standard. Aim of the study is to test the efficacy of HD+ endoscopy in conjunction with i-Scan or acetic acid to diagnose Barrett's esophagus. The primary endpoint of the current prospective study is to investigate the diagnostic yield of virtual chromoendoscopy using the i scan function as compared to acetic acid chromoendoscopy and 4-quadrant biopsies.

Patients with visible columnar lined lower esophagus (CLE) are included. After standardized PPI therapy (14 days; standard dosage) patients were randomized at a 1:1 ratio to undergo either chromoendoscopy in conjunction with acetic acid application or i-Scan. Biopsies are taken in a targeted fashion using acetic acid or i scan and afterwards 4-quadrant biopsies are taken.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Specialized columnar epithelium (SCE) is considered as pathognomonic for Barrett's esophagus and can be recognized by new endoscopic techniques. Aim of the study is to test the efficacy of HD+ endoscopy in conjunction with i-scan (newly developed post processing digital filter) or chromoendoscopy (acetic acid) to diagnose Barrett's esophagus.

Patients with visible columnar lined lower esophagus (CLE) or known Barrett's esophagus are included. After standardized PPI therapy (14 days; standard dosage) patients are randomized at a 1:1 ratio to undergo either chromoendoscopy in conjunction with acetic acid application (10-15ml; 1.5%) or HD+ endoscopy in conjunction with i-scan. Mucosal surface structure within CLE is graduated according to Guelrud's classification (type 1-2: endoscopic prediction: gastric epithelium; type 3-4: Barrett's epithelium). Biopsies are taken in a targeted fashion (type 1-4) in both groups and subsequently 4-quadrant biopsies were taken. Primary outcome analysis's to investigate the diagnostic yield of the different biopsy protocols.

Study Type

Observational

Enrollment (Anticipated)

100

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

  • Germany
      • Mainz, Germany, 55131
        • Recruiting
        • University of Mainz
        • Contact:

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

Probability Sample

Study Population

patients with suspected barrettes esophagus

Description

Inclusion Criteria:

  • patients with CLE
  • patients with known Barrett's esophagus

Exclusion Criteria:

  • pregnancy
  • severe coagulopathy
  • known malignancies

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: Case-Control
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Barrett
Other: biopsies
taking biopsies
Other: biopsy
biopsy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
diagnostic yield of targeted biopsies with high definition endoscopy using i scan virtual chromoendoscopy and acetic acid guided biopsies
Time Frame: one year
one year

Collaborators and Investigators

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

Sponsor

Johannes Gutenberg University Mainz

Investigators

  • Principal Investigator: Arthur Hoffman, MD, Johannes Gutenberg University Mainz

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

April 1, 2009

Primary Completion (Anticipated)

December 1, 2011

Study Completion (Anticipated)

December 1, 2011

Study Registration Dates

First Submitted

September 21, 2011

First Submitted That Met QC Criteria

September 27, 2011

First Posted (Estimate)

September 28, 2011

Study Record Updates

Last Update Posted (Estimate)

September 28, 2011

Last Update Submitted That Met QC Criteria

September 27, 2011

Last Verified

September 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 837.237.09

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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