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| Name | Class |
|---|---|
| AstraZeneca | INDUSTRY |
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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.
This study is intended to gather additional information regarding the performance of a bipolar balloon electrode device (HALO360) utilizing radiofrequency (RF) energy in the micro-layer ablation of Barrett's esophagus, a precancerous, metaplastic change in the esophageal lining. The device has received 510(k) clearance for specific indications, including the treatment of Barrett's esophagus.
This study is conducted in two phases and is intended to further evaluate the effect of micro-layer ablation of Barrett's metaplasia using a 510(k) cleared, bipolar, balloon electrode device. Phase I (n=30) is intended to provide additional information regarding the effects of three randomized treatment parameters (energy settings, Joules/cm2). Phase II (n=70) is intended to provide additional information regarding the effects of the optimal technique and energy density settings (Joules/cm2) determined from the 1-month endoscopy results of Phase I. Phase 2 primary endpoint was histological clearance of Barrett's (% patients). This trial incorporated an opportunity for persistent BE to be treated with a focal ablation device (HALO90), at the 2.5-year follow-up, achieving a CR in 98.4% of patients. 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. This study will allow collection of 5-year follow-up biopsies and, thereafter, offer RFA for any subject with persistent Barrett's.
Upon approval of the present amendment to the protocol (B-200-5 year extension) and the informed consent form (ICF) at each study site, subjects who participated in B-200-2.5 year extension and had a biopsy at 2.5 years after initial enrollment will be offered participation in this extension.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Phase I: 6 J/cm2 | Active Comparator | Subjects randomized to the energy density group of 6 J/cm2 through the HALO Ablation System. |
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| Phase I: 8 J/cm2 | Active Comparator | Subjects randomized to the energy density group of 8 J/cm2 through the HALO Ablation System. |
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| Phase I: 10 J/cm2 | Active Comparator | Subjects randomized to the energy density group of 10 J/cm2 through the HALO Ablation System. |
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| Phase I: 12 J/cm2 | Active Comparator | Subjects randomized to the energy density group of 12 J/cm2 through the HALO Ablation System. |
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| Phase II | Active Comparator | All Halo 360 treatments performed at 10 J/cm2 through the HALO Ablation System. All Halo 90 treatments performed at 12 J/cm2 through the HALO Ablation System. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| HALO Ablation System | Device | 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. |
| Measure | Description | Time Frame |
|---|---|---|
| Percentage of Participants With Histological Clearance of Barrett's Metaplasia | The primary study outcomes were defined as the percent of patients with complete histological response to intestinal metaplasia (IM) (CR-IM). CR-IM means complete eradication of IM (diseased epithelium). A patient was considered a Complete Responder (CR) if all biopsies (100%) were negative for intestinal metaplasia (CR-IM). | 5 year |
| Measure | Description | Time Frame |
|---|---|---|
| Progression of Histological Grade | Secondary outcomes of progression of histological grade was defined as proportion of participants who had progression of disease such as (i) prevalence of dysplasia; (ii) Kaplan-Meier CR-IM (Complete Response to Intestinal Metaplasia) survival analysis. | 5 year |
| Adverse Events |
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Inclusion Criteria:
Subject has documented histopathological diagnosis of Barrett's metaplasia (without dysplasia) as follows:
Barrett metaplasia endoscopic length:
Phase I : 2-3 cm Barrett's length (inclusive) Phase II: 2-6 cm Barrett's length (inclusive)
Age 18-75 years inclusive
Subject agrees to participate, fully understands content of informed consent form, and signs the informed consent form
Five year extension: All subjects who participated in B-200-2.5 year extension and had a biopsy at 2.5 years after initial enrollment (n=61) will be offered participation in this extension.
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| David E Fleischer, MD | Mayo Clinic | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Mayo Clinic Scottsdale | Scottsdale | Arizona | 85259 | United States | ||
| UC Irvine Medical Center |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 17258973 | Result | Sharma VK, Wang KK, Overholt BF, Lightdale CJ, Fennerty MB, Dean PJ, Pleskow DK, Chuttani R, Reymunde A, Santiago N, Chang KJ, Kimmey MB, Fleischer DE. Balloon-based, circumferential, endoscopic radiofrequency ablation of Barrett's esophagus: 1-year follow-up of 100 patients. Gastrointest Endosc. 2007 Feb;65(2):185-95. doi: 10.1016/j.gie.2006.09.033. | |
| 18561930 |
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| ID | Title | Description |
|---|---|---|
| FG000 | Phase I: 6 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic Intestinal Metaplasia (IM), Low-Grade Dysplasia (LGD) and High-Grade Dysplasia (HGD). The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. They received a dose of 6 J/cm^2 during the course of this study. |
| Title | Milestones | Reasons Not Completed | |||||
|---|---|---|---|---|---|---|---|
| Overall Study |
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The secondary outcome adverse events was defined as any event that occurred during the course of the trial |
| 5 year |
| Percentage of Participants With Sub-squamous Intestinal Metaplasia | The secondary outcome sub-squamous intestinal metaplasia was defined as prevalence of buried glandular mucosa in the esophagus. | 5 year |
| Orange |
| California |
| 92868 |
| United States |
| Beth Israel Deaconess Medical Center | Boston | Massachusetts | 02215 | United States |
| Mayo Clinic Rochester | Rochester | Minnesota | 55905 | United States |
| Columbia University Medical Center | New York | New York | 10032 | United States |
| Oregon Health Sciences University | Portland | Oregon | 97239 | United States |
| University of Pennsylvania | Philadelphia | Pennsylvania | 19104 | United States |
| Gastrointestinal Associates | Knoxville | Tennessee | 37909 | United States |
| Tacoma Digestive Disease and Research Center | Seattle | Washington | 98405 | United States |
| Ponce Gastroenterology Research | Ponce | 00717 | Puerto Rico |
| Fleischer DE, Overholt BF, Sharma VK, Reymunde A, Kimmey MB, Chuttani R, Chang KJ, Lightdale CJ, Santiago N, Pleskow DK, Dean PJ, Wang KK. Endoscopic ablation of Barrett's esophagus: a multicenter study with 2.5-year follow-up. Gastrointest Endosc. 2008 Nov;68(5):867-76. doi: 10.1016/j.gie.2008.03.008. Epub 2008 Jun 17. |
| 20857372 | Result | Fleischer DE, Overholt BF, Sharma VK, Reymunde A, Kimmey MB, Chuttani R, Chang KJ, Muthasamy R, Lightdale CJ, Santiago N, Pleskow DK, Dean PJ, Wang KK. Endoscopic radiofrequency ablation for Barrett's esophagus: 5-year outcomes from a prospective multicenter trial. Endoscopy. 2010 Oct;42(10):781-9. doi: 10.1055/s-0030-1255779. Epub 2010 Sep 20. |
| FG001 | Phase I: 8 J/cm^2 | In this group, subjects were randomized to the energy density group of 8 J/cm^2. They received a dose of 8 J/cm^2 during the course of this study. |
| FG002 | Phase I: 10 J/cm^2 | In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. |
| FG003 | Phase I: 12 J/cm^2 | In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. |
| FG004 | Phase II | In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 |
| COMPLETED |
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| NOT COMPLETED |
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| ID | Title | Description |
|---|---|---|
| BG000 | Phase I: 6 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. They received a dose of 6 J/cm^2 during the course of this study. |
| BG001 | Phase I: 8 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 8 J/cm^2. They received a dose of 8 J/cm^2 during the course of this study. |
| BG002 | Phase I: 10 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. |
| BG003 | Phase I: 12 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. |
| BG004 | Phase II | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 |
| BG005 | Total | Total of all reporting groups |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants | Participants |
| ||||||||||||||||
| Sex: Female, Male | Count of Participants | Participants |
| ||||||||||||||||
| Region of Enrollment | Number | participants |
|
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Percentage of Participants With Histological Clearance of Barrett's Metaplasia | The primary study outcomes were defined as the percent of patients with complete histological response to intestinal metaplasia (IM) (CR-IM). CR-IM means complete eradication of IM (diseased epithelium). A patient was considered a Complete Responder (CR) if all biopsies (100%) were negative for intestinal metaplasia (CR-IM). | The analysis was done per protocol. | Posted | Number | Percent of Participants | 5 year |
|
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| Secondary | Progression of Histological Grade | Secondary outcomes of progression of histological grade was defined as proportion of participants who had progression of disease such as (i) prevalence of dysplasia; (ii) Kaplan-Meier CR-IM (Complete Response to Intestinal Metaplasia) survival analysis. | The analysis was done per protocol. | Posted | Number | Percent of Participants | 5 year |
| ||||||||||||||||||||||||||||||||||||||||
| Secondary | Adverse Events | The secondary outcome adverse events was defined as any event that occurred during the course of the trial | The analysis was done per protocol. | Posted | Number | Participants | 5 year |
| ||||||||||||||||||||||||||||||||||||||||
| Secondary | Percentage of Participants With Sub-squamous Intestinal Metaplasia | The secondary outcome sub-squamous intestinal metaplasia was defined as prevalence of buried glandular mucosa in the esophagus. | The analysis was done per protocol. | Posted | Number | Percent of Participants | 5 year |
|
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Phase I: 6 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. They received a dose of 6 J/cm^2 during the course of this study. | 0 | 1 | 0 | 1 | ||
| EG001 | Phase I: 8 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 8 J/cm^2. They received a dose of 8 J/cm^2 during the course of this study. | 0 | 10 | 0 | 10 | ||
| EG002 | Phase I: 10 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. | 0 | 10 | 0 | 10 | ||
| EG003 | Phase I: 12 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. | 0 | 11 | 0 | 11 | ||
| EG004 | Phase II | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 | 0 | 70 | 0 | 70 |
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Study had no concurrent control arm, biopsy forceps were not standardized for all cases, the original patient group comprised 70 patients, whereas 69 and 61 patients were available at 1 and 2.5 years, respectively, 60 eligible patients at 5 years.
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| David E. Fleischer, M.D. | Mayo Clinic, Arizona | (480) 301-4461 | fleischer.david@mayo.edu |
| ID | Term |
|---|---|
| D001471 | Barrett Esophagus |
| ID | Term |
|---|---|
| D011230 | Precancerous Conditions |
| D009369 | Neoplasms |
| D004935 | Esophageal Diseases |
| D005767 | Gastrointestinal Diseases |
| D004066 | Digestive System Diseases |
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| Between 18 and 65 years |
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| >=65 years |
|
| Male |
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| Puerto Rico |
|
| OG002 | Phase I: 10 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. |
| OG003 | Phase I: 12 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. |
| OG004 | Phase II | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 |
|
|
| OG002 | Phase I: 10 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. |
| OG003 | Phase I: 12 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. |
| OG004 | Phase II | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 |
|
|
| OG002 | Phase I: 10 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 10 J/cm^2. They received a dose of 10 J/cm^2 during the course of this study. |
| OG003 | Phase I: 12 J/cm^2 | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 12 J/cm^2. They received a dose of 12 J/cm^2 during the course of this study. |
| OG004 | Phase II | The HALO System is an option for eradication of the diseased epithelium of all three subclasses of Barrett's esophagus (non-dysplastic IM, LGD and HGD. The HALO Systems include the circumferential HALO360 Ablation System and the focal HALO90. The Ablation Catheter and Energy Generator work together to deliver energy to the tissue resulting in tissue coagulation. The HALO360 System is designed for longer segment diseased tissue (2 cm or greater) or as an initial treatment to ensure all Barrett's tissue or buried Barrett's glands are eliminated within the zone of intestinal metaplasia. The HALO90 System is designed for short segment Barrett's (2 cm or less) or for follow-up treatment for small Barrett's islands and tongues. In this group, subjects were randomized to the energy density group of 6 J/cm^2. All Halo 360 treatments performed at 10 J/cm^2; All Halo 90 treatments performed at 12 J/cm^2 |
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