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Micro-Layer Ablation of Barrett's Metaplasia- A Two-Phase, Multi-Center Trial - Extension of Follow-up to 5 Years

NCT00489268 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 102

Last updated 2017-03-13

Study results available
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Summary

This study was conducted in 2 serial phases (dosimetry phase and effectiveness phase) to evaluate a balloon-based ablation device (HALO360) that delivers a pre-set amount of energy density (J/cm2) to barrett's tissue. The dosimetry phase evaluated the dose-response and the safety of delivering 6 to 12 J/cm2. The effectiveness phase used 10 J/cm2 delivered twice for all patients, followed by Esophagogastroduodenoscopy (EGD) with biopsies at 1, 3, 6, and 12 months. A second ablation procedure was performed if Barretts esophagus (BE) was present at 1 or 3 months. A complete response (CR) was defined as all biopsy specimens negative for Barrett's Esophagus at 12 months. The effectiveness phase of the present study was extended to a 2.5-year follow-up. This trial incorporated an opportunity for persistent BE to be treated with a focal ablation device (HALO90), achieving a CR in 98.4% of patients by the 2.5-year follow-up,the results of which were published . There is ample evidence that RadioFrequency Ablation (RFA) for Barrett's esophagus is effective and safe. Having additional follow-up (5 years) would add valuable information to the literature, thus aiding the physician in making patient management decisions about the appropriate follow-up interval after RFA.

Conditions

  • Barrett Esophagus

Interventions

DEVICE

HALO Ablation System

Phase I: 1-2 ablation visits; Phase II 1 to 12 months: 1-2 ablation visits; Phase II 12 to 30 months: 1-3 ablation visits Phase II 55-60 months: 0-1 ablation visit \*\*\*\*\*\*Phase I was a dosimetry study and Phase II used the preferred dose. The same intervention was used for each dose.

Sponsors & Collaborators

  • AstraZeneca

    collaborator INDUSTRY

  • Covidien, GI Solutions

    lead INDUSTRY

Principal Investigators

  • David E Fleischer, MD · Mayo Clinic

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2003-11-30
Primary Completion
2007-02-28
Completion
2009-10-31

Countries

  • United States
  • Puerto Rico

Study Locations

More Related Trials

Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00489268 on ClinicalTrials.gov