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ClinicalTrials.gov public records Last synced Nov 2, 2026, 6:28 PM EST

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Showing 1–24 of 274 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: gastric bypass Clear all
Recruiting Not applicable Interventional

Effect of Limb Length Ratio on Roux-en-Y Gastric Bypass Outcomes (CLIMB II Study)

NCT06293703
View directory record Official record
Conditions
Morbid Obesity
Interventions
Surgery
Procedure
Lead sponsor
Salvador Navarrete
Other
Eligibility
18 Years to 70 Years
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Nov 2, 2026, 6:28 PM EST
Terminated Not applicable Interventional

Bariatric Surgery for ESRD Patients vs Control

NCT00580762
View directory record Official record
Conditions
Obesity, ESRD
Interventions
Roux-en-y gastric bypass (RYGB)
Procedure
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 7, 2016 · Synced Nov 2, 2026, 6:28 PM EST
Completed Not applicable Interventional

Use of MCT Oil for Enhancement of Weight Loss in Obese Patients

NCT00207272
View directory record Official record
Conditions
Obesity, Weight Loss
Interventions
1170-1870 kcal/day liquid diet, Gastric bypass surgery, Biopsy.visceral adipose tissue, Biopsy.omental adipose tissue, Biopsy. subcutaneous abdominal adipose tissue, Blood sample
Behavioral · Procedure
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 26, 2008 · Synced Nov 2, 2026, 6:28 PM EST
Completed No phase listed Observational

Symptomatic, Biomechanical and Radiographic Outcomes in Knee Osteoarthritis Following Gastric Bypass Surgery

NCT00194051
View directory record Official record
Conditions
Obesity, Osteoarthritis
Interventions
gastric bypass surgery
Procedure
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
35 Years to 60 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 26, 2022 · Synced Nov 2, 2026, 6:28 PM EST
Terminated No phase listed Observational

Recovery of Ventilation After General Anesthesia in Morbidly Obese Patients

NCT03925610
View directory record Official record
Conditions
Morbid Obesity, Opioid-Related Disorders, Surgery--Complications, Sleep Apnea Syndromes
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 22, 2021 · Synced Nov 2, 2026, 6:28 PM EST
Completed Phase 3 Interventional Results available

Prospective Randomized Trial Comparing Gastrectomy, Metastasectomy Plus Systemic Therapy Versus Systemic Therapy Alone: GYMSSA Trial

NCT00941655
View directory record Official record
Conditions
Gastric Cancer
Interventions
Oxaliplatin, Irinotecan, 5-Fluorouracil, Leucovorin, Gastrectomy and/or metastasectomy
Drug · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 13, 2019 · Synced Nov 2, 2026, 6:28 PM EST
Terminated No phase listed Observational

Surgical Weight-Loss to Improve Functional Status Trajectories Following Total Knee Arthroplasty (SWIFT Trial)

NCT02598531
View directory record Official record
Conditions
Obesity, Osteoarthritis
Interventions
Not listed
Lead sponsor
Geisinger Clinic
Other
Eligibility
22 Years to 75 Years
Enrollment
289 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Nov 2, 2026, 6:28 PM EST
Completed Phase 4 Interventional Results available

Bupivacaine Liposomal Injection (Exparel) for Postsurgical Analgesia in Patient Undergoing Laparoscopic Bariatric Surgery

NCT02969187
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Exparel, Bupivacain, Saline
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Nov 2, 2026, 6:28 PM EST
Completed No phase listed Observational

Laparoscopic Revision Gastric Bypass for Inadequate Initial Weight Loss

NCT01040377
View directory record Official record
Conditions
Inadequate Initial Weight Loss, Persistent Clinically Severe Obesity
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Dec 29, 2009 · Synced Nov 2, 2026, 6:28 PM EST
Recruiting Not applicable Interventional

Enteral Anastomosis for the Treatment of Gastric Outlet Obstruction: A Randomized Controlled Study Comparing Endoscopic Versus Surgical Gastrojejunostomy

NCT05561907
View directory record Official record
Conditions
Gastric Outlet Obstruction
Interventions
Surgical gastrojejunostomy (SGJ), Endoscopic gastrojejunostomy (EGJ)
Procedure
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
4
States / cities
New Brunswick, New Jersey • Manhasset, New York • New Hyde Park, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Nov 2, 2026, 6:28 PM EST
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Outcome Analysis of POEM and Endoluminal Therapies

NCT03123835
View directory record Official record
Conditions
Achalasia, Gastric Fistula, Weight Gain After Primary Weight Loss Surgery, Marginal Ulcer, Stenoses, Gastric Nec
Interventions
Endoscopic Intervention
Procedure
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 80 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2031
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2025 · Synced Nov 2, 2026, 6:28 PM EST
Completed No phase listed Observational Accepts healthy volunteers Results available

Minimally Invasive Surgery (MIS) Database for the Purpose of Research

NCT00535990
View directory record Official record
Conditions
Morbid Obesity, Hernia, Colorectal Cancer, Laparoscopy
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 6, 2021 · Synced Nov 2, 2026, 6:28 PM EST
Completed No phase listed Observational

Glucose Homeostasis Pre and Post Bariatric Surgery

NCT00981500
View directory record Official record
Conditions
Morbid Obesity
Interventions
gastric bypass, gastric banding, sleeve gastrectomy
Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
20 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 10, 2018 · Synced Nov 2, 2026, 6:28 PM EST
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Metabolic Surgery for Atrial Fibrillation Elimination

NCT07027969
View directory record Official record
Conditions
Atrial Fibrillation, Obesity and Obesity-related Medical Conditions
Interventions
Roux-en-Y Gastric Bypass or Sleeve Gastrectomy, Anti-Obesity Medication (AOM) treatment
Procedure · Drug
Lead sponsor
Ali Aminian
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Nov 2, 2026, 6:28 PM EST
Completed Not applicable Interventional Results available

The Effect of Pre-Operative Transversus Abdominis Plane (TAP) Block in the Post Operative Opioid Consumption in Morbid Obese Patients Undergoing Laparoscopic Gastric Bypass Surgery: A Prospective,Randomized, Blinded Study

NCT01075087
View directory record Official record
Conditions
Pain, Obesity, Surgery
Interventions
Placebo, (study group) will receive a bilateral TAP block using 20 cc of 0.5% ropivacaine on each side.
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 26, 2014 · Synced Nov 2, 2026, 6:28 PM EST
Not listed Not applicable Interventional

Efficacy of IV Acetaminophen in Acute Post-Operative Pain Control in Laparoscopic Roux-en-Y Gastric Bypass Surgery (LRYGBP) Patients

NCT01460667
View directory record Official record
Conditions
Morbid Obesity
Interventions
IV acetaminophen, IV normal saline
Drug
Lead sponsor
McLaren Regional Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 27, 2011 · Synced Nov 2, 2026, 6:28 PM EST
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effects of Gastric Bypass on Blood Levels of Duloxetine

NCT00989157
View directory record Official record
Conditions
Bariatric Surgery
Interventions
Duloxetine
Drug
Lead sponsor
Neuropsychiatric Research Institute, Fargo, North Dakota
Other
Eligibility
18 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Aug 11, 2014 · Synced Nov 2, 2026, 6:28 PM EST
Completed Phase 2Phase 3 Interventional

Improving Diabetes Through Lifestyle and Surgery

NCT01667783
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Gastric Banding, Medical Weight Loss, Gastric Bypass
Procedure · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 64 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Nov 2, 2026, 6:28 PM EST
Completed Not applicable Interventional Results available

Evaluation of Endostapled Anastomoses for Laparoscopic Gastric Bypass (EEA-LGB)

NCT00254072
View directory record Official record
Conditions
Morbid Obesity
Interventions
3.5 mm vs 4.8 mm Stapler During Laparoscopic Gastric Bypass
Procedure
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 60 Years
Enrollment
355 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
6
States / cities
Orange, California • Tampa, Florida • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2010 · Synced Nov 2, 2026, 6:28 PM EST
Completed No phase listed Observational

Prophylactic Enoxaparin Dosing in Roux-en-Y Gastric Bypass Surgery Patients at St. Vincent Carmel

NCT01230658
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Ascension St. Vincent Carmel Hospital
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Carmel, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 14, 2024 · Synced Nov 2, 2026, 6:28 PM EST
Active, not recruiting Not applicable Interventional

The TRIABETES - ARMMS-T2D Study: A Randomized Trial to Compare Surgical and Medical Treatments for Type 2 Diabetes

NCT01047735
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass Surgery, Laparoscopic Adjustable Gastric Banding, Lifestyle Weight Loss Intervention
Procedure · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
25 Years to 55 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Nov 2, 2026, 6:28 PM EST
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Contribution of Incretin Hormones to Post-prandial Glucose Metabolism After Roux-en-Y Gastric Bypass

NCT01843881
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Exendin 9, 39, Placebo
Drug
Lead sponsor
Adrian Vella
Other
Eligibility
20 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 4, 2013 · Synced Nov 2, 2026, 6:28 PM EST
Not listed No phase listed Observational Accepts healthy volunteers

Effects of Alcohol After Bariatric Surgery

NCT01843257
View directory record Official record
Conditions
Obesity
Interventions
Alcohol challenge test Alcohol visit first, Alcohol challenge test Placebo visit first
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Nov 2, 2026, 6:28 PM EST
Not listed Not applicable Interventional

Pilot Study of the Endolumik Gastric Calibration Tube for Bariatric Surgery

NCT05486325
View directory record Official record
Conditions
Morbid Obesity
Interventions
Endolumik Gastric Calibration Tube (EGCT)
Device
Lead sponsor
Endolumik, Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Nov 2, 2026, 6:28 PM EST