CClinicalTrials.gg
CompletedNCT01429194Updated Jun 16, 2015

The ACE Follow-up Study

An interventional study of ACE Stapler in Obesity, sponsored by Boston Scientific Corporation. Completed at 6 sites in 4 countries. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2015-06-16.

Sponsored by Boston Scientific Corporation · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
69
Allocation
Not applicable
Ages
18 Years to 50 Years
Sex
All
01

Study summary

The Articulating Circular Endoscopic (ACE) Stapler is an investigational system using endoscopic guidance to trans-orally place plications in the stomach in obese subjects to reduce volume and expansion of the fundus and greater curve to abate hunger as part of a supervised weight reduction program.

The primary objective of this study is to perform an evaluation of the safety of the plication procedure.

The secondary objective of this study is to evaluate the preliminary efficacy of the ACE Stapler for the treatment of obesity over a 24 month follow-up period.

Read the detailed description

This study was originally sponsored by BaroSense, Inc (protocol 11-03). 69 subjects were enrolled and treated as part of the study at 6 centers in 4 countries outside the United States. On April 30, 2013 BaroSense Inc went out of business and the study was terminated with all participating centers' Ethics Committees. At the point of study termination, all patients were in the middle of post procedure follow-up.

Boston Scientific has since acquired the technology and study and will re-initiate follow-up to 24 months in order to collect data to support the original safety and efficacy endpoints of the protocol. Only the 69 subjects previously enrolled and treated in BaroSense's protocol 11-03 will be eligible for participation in the Boston Scientific continued follow-up study ("The ACE Follow-up Study" protocol 90891629). The Boston Scientific protocol will be approved by participating centers' Ethics Committees and patients who choose to participate in The ACE Follow-up Study will need to sign a new, Ethics Committee Approved, informed consent form.

02

Conditions studied

  • Obesity

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Keywords

  • Weight Loss
  • Trans-oral Endoscopic Procedure
  • Gastric Plication
03

In context

Obesity

6,296 studies on the registry are indexed under Obesity; 1,695 are open to participants now.

This study's enrollment of 69 is below the median of 78 across 4,878 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Boston Scientific Corporation is the lead sponsor of 517 studies on the registry; 38 are open to participants now.

Of its 64 completed or terminated interventional studies of FDA-regulated products, 56 (88%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Subject, male or female, is age 18 to 50 years of age.
  2. Subject must be able to understand and be willing to sign an informed consent document.
  3. Subject must be willing and able to participate in all aspects of the study and agree to comply with all study requirements for the duration of the study. This includes availability of reliable transportation and sufficient time to attend all follow-up visits.
  4. Subject has a BMI of 40 - 45 or 30 to 39.9 plus one or more co-morbid diseases expected to improve with weight loss, including but not limited to hypertension, dyslipidemia, obstructive sleep apnea, or diabetes mellitus.
  5. Subject must be fully ambulatory, without chronic reliance on walking aids such as crutches, walkers or a wheelchair.
  6. Subject must be of sufficient and stable medical health, as evaluated by the Principal Investigator.
  7. Subject must have a primary care physician that will manage the subject for any co-morbid conditions throughout the study.
  8. Subject must have failed standard obesity therapy of diet, exercise, behavior modification, and pharmacologic agents either alone or in combination, as assessed by an interview with a member of the study team at baseline.
  9. Subject agrees to refrain from any type of reconstructive surgery that may affect body weight such as mammoplasty or abdominal lipoplasty or liposuction, during the trial.

Exclusion criteria

Exclusion Criteria:

  1. Subject has history of/or signs and/or symptoms of gastro-duodenal ulcer disease.
  2. Subject has poorly controlled diabetes as indicated by the lack of stable diabetes medications and doses over the last month, or has a history of diabetes for greater than 10 years.
  3. Subject has had significant weight loss in the last 3 months, or between baseline and the study procedure.
  4. Subject has a history or is diagnosed with eating disorders.
  5. Subject has history of peptic ulcer and tests positive for H. pylori, unless treated before the procedure.
  6. Subject has symptomatic congestive heart failure, cardiac arrhythmia or unstable coronary artery disease.
  7. Subject has pre-existing respiratory disease such as chronic obstructive pulmonary disease (COPD), pneumonia or cancer.
  8. Subject has significant esophageal disease including Zenker's diverticulum, grade 3-4 reflux esophagitis, stricture, Barrett's esophagus, esophageal cancer, esophageal diverticulum, dysphagia, achalasia, or symptoms of dysmotility.
  9. Subject is observed during EGD to have heavily scarred, malignant or poor quality/friable tissue in areas of the stomach where plications are to be placed.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
69 participants (actual)

Study arms

  • Experimental
    ACE procedure

    ACE procedure for the treatment of obesity

    Procedure: ACE Stapler

Interventions

  • ProcedureACE Stapler

    The ACE Stapler is used endoscopically, and incorporates a unique tissue capture mechanism to produce large, permanent serosa to serosa plications in a completely trans-oral approach.

06

What researchers measure

Primary outcomes

  1. Safety

    The primary safety analysis will assess the occurrence and procedure relatedness of the following events: * Adverse Events (AE) * Adverse Device Effects (ADE) * Serious Adverse Events (SAE) * Unanticipated Adverse Device Effects (UADE)

    Time frame: Enrollment through 24 months post-procedure.

Secondary outcomes

  1. Percent excess weight loss

    Percent excess weight loss (%EWL), defined as: (preoperative weight-current weight)/(preoperative weight - ideal weight) \*100, where ideal weight is the weight that would correspond to a BMI of 25 based on the subject's height. Relative to weight at the procedure visit.

    Time frame: Procedure through 24 months post-procedure

  2. Total weight lost (kg) and percent weight lost

    Relative to weight at the procedure visit.

    Time frame: Procedure through 24 months post-procedure

  3. Change in Body Mass Index (BMI) and percent change in BMI

    Relative to BMI at the procedure visit.

    Time frame: Procedure through 24 months post-procedure

  4. Change in waist circumference

    Relative to to waist circumference at the procedure visit.

    Time frame: Procedure through 24 months post-procedure

  5. Improvement in co-morbid disease(s)

    Including but not limited to, improvement in vital signs and/or laboratory values.

    Time frame: Enrollment through 24 months post-procedure

  6. Changes in Quality of Life

    As reported on the SF-36 Quality of LIfe Questionnaire.

    Time frame: Enrollment through 24 months post-procedure

  7. Changes in Feelings of Satiety

    As reported on the TFEQ-R18 Three Factor Eating Questionnaire.

    Time frame: Enrollment through 24 months post-procedure

07

Study locations

6 sites
  • Hospital Aleman / Programa de Unidades Bariátricas
    Autonoma de Bueno Aires, CP 1118, Argentina
  • Hospital Italiano de Mendoza / Clinica Quirugica S. A.
    Mendoza, 290, Argentina
  • University Institute of Cardiology and Pulmonary Medicine of Quebec
    Quebec, G1V 4G5, Canada
  • Tel-Aviv Sourasky Medical Center
    Tel-Aviv, 64234, Israel
  • Amsterdam Medical Center
    Amsterdam, 110AZ, Netherlands
  • University Hospital Maastricht
    Maastricht, 6202, Netherlands
08

References and documents

Publications

  • Verlaan T, Paulus GF, Mathus-Vliegen EM, Veldhuyzen EA, Conchillo JM, Bouvy ND, Fockens P. Endoscopic gastric volume reduction with a novel articulating plication device is safe and effective in the treatment of obesity (with video). Gastrointest Endosc. 2015 Feb;81(2):312-20. doi: 10.1016/j.gie.2014.06.017. Epub 2014 Jul 29. PubMed 25085333 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 16, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01429194
Lead sponsor
Boston Scientific Corporation
Responsible party
Sponsor
First posted
Sep 7, 2011
Start date
Apr 2012
Primary completion
Feb 2015
Completion
Feb 2015
Last update
Jun 16, 2015

Study contacts

Simon Biron, MD
principal investigator · University Institute of Cardiology and Pulmonary Medicine of Quebec

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2015. You cannot join it, but the record below documents what was studied.

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