MGB/OAGB and LSG Effects on Lower Esophageal Sphincter (LES) Function

July 30, 2019 updated by: Mario Musella MD

Effects of Mini/One Anastomosis Gastric Bypass (MGB/OAGB) and Sleeve Gastrectomy (LSG) on Lower Esophageal Sphincter (LES) Function. A Randomized Controlled Trial

Background While several articles have reported about the effects of laparoscopic sleeve gastrectomy (LSG) on the lower esophageal sphincter (LES), to date, just one paper has discussed this issue with regard the Mini/One anastomosis gastric bypass (MGB/OAGB). This is expected to be the first randomized trial exploring and comparing these two interventions.

Setting "Federico II" University Hospital, Naples - ITALY.

Methods Fifty morbid obese patients are going to be studied. All patients presenting with a normal preoperative LES function will be randomly assigned to undergo LSG (arm 1 - 25 pts) or MGB (arm 2 - 25 pts). Patients undergo clinical assessment for reflux symptoms, and esophago-gastro-duodenoscopy (EGDS) plus high-resolution impedance manometry (HRiM) and 24-hour pH-impedance monitoring (MII-pH) before, two months and 1 year after both LSG or MGB/OAGB.

Objective Endpoint 1: Does this surgery affect the LES area function in both arm 1 or arm 2 patients determining a possible increase in gastroesophageal acid or non acid reflux? Endpoint 2: Does one between the two procedures outperform the other one in terms of eventual LES area modifications? Endpoint 3: In the case of a good performance of LSG or MGB/OAGB or both the procedures, is this to be primarily related to surgery per se or to weight loss?

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

80

Phase

  • Not Applicable

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

  • Italy
      • Naples, Italy, 80131
        • Recruiting
        • Advanced Biomedical Sciences Department - "Federico II" University
        • Contact:
          • Annunziata Marfella
          • Phone Number: 2896 +39081746

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 to 65 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 80 morbid obese patients are going to be studied. All patients presenting with a normal preoperative LES function will be randomly assigned to undergo LSG (arm 1 - 40 pts) or MGB (arm 2 - 40 pts).-

Exclusion Criteria:

  • Patients lost at follow up. Cancer patients at any stage.

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

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Mini/One anastomosis gastric bypass
Execution of a laparoscopic mini/one anastomosis gastric bypass (MGB/OAGB)
Procedure: MGB/OAGB
ACTIVE_COMPARATOR: Laparoscopic sleeve gastrectomy
Execution of a laparoscopic sleeve gastrectomy (LSG)
Procedure: LSG

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Modifications in terms of LES function
Time Frame: 12 months
Does this surgery affect the LES area function in both arm 1 or arm 2 patients determining a possible increase in gastroesophageal acid or non acid reflux? This will be measured by the numbers and the duration of both acidic and non acidic reflux measured by 24-hour pH-impedance monitoring (MII-pH)
12 months
Definition of the best procedure
Time Frame: 12 months
Does one between the two procedures outperform the other one in terms of eventual LES area modifications? This will be measured in both procedures by the numbers and the duration of both acidic and non acidic reflux measured by 24-hour pH-impedance monitoring (MII-pH)
12 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Causes of eventual modifications of LES function in relationship with a specific surgical procedure
Time Frame: 6 months and 12 months
In the case of a good performance of LSG or MGB/OAGB or both the procedures, is this to be primarily related to surgery per se or to weight loss? This will be evaluated in both procedures by the numbers and the duration of both acidic and non acidic reflux measured by 24-hour pH-impedance monitoring (MII-pH)
6 months and 12 months
Causes of eventual modifications of LES function in relationship with weight loss
Time Frame: 6 months and 12 months
In the case of a good performance of LSG or MGB/OAGB or both the procedures, is this to be primarily related to surgery per se or to weight loss? This will be evaluated in both procedures by the weight loss expressed as body mass index (BMI) points loss.
6 months and 12 months

Collaborators and Investigators

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

Sponsor

Mario Musella MD

Investigators

  • Principal Investigator: Mario Musella, MD, Federico II University

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

January 1, 2016

Primary Completion (ANTICIPATED)

December 1, 2019

Study Completion (ANTICIPATED)

December 1, 2020

Study Registration Dates

First Submitted

November 28, 2016

First Submitted That Met QC Criteria

December 8, 2016

First Posted (ESTIMATE)

December 9, 2016

Study Record Updates

Last Update Posted (ACTUAL)

August 1, 2019

Last Update Submitted That Met QC Criteria

July 30, 2019

Last Verified

July 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MGB1

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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