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ClinicalTrials.gov public records Last synced Oct 12, 2026, 1:59 AM EDT

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Showing 97–120 of 201 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Roux en Y Gastric Bypass Clear all
Completed Phase 4 Interventional Accepts healthy volunteers

A Comparison of Sustained and Extended Release Bupropion Following Bariatric Surgery

NCT02173886
View directory record Official record
Conditions
Roux en Y Gastric Bypass
Interventions
Bupropion SR and XL
Drug
Lead sponsor
North Dakota State University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Sep 28, 2016 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Comparative Effectiveness of Bariatric Surgery Versus Medical Management to Induce Diabetes Remission in Diabetic Patients With BMI 30-35

NCT01423877
View directory record Official record
Conditions
Diabetes
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 1, 2014 · Synced Oct 12, 2026, 1:59 AM EDT
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 Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational Results available

Taste Perception Pre and Post Bariatric Surgery

NCT01536197
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
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Oct 12, 2026, 1:59 AM EDT
Terminated Not applicable Interventional

Laparoscopic Revision of an Enlarged Gastric Outlet After Gastric Bypass

NCT01116284
View directory record Official record
Conditions
Morbid Obesity
Interventions
Revision of gastric bypass
Procedure
Lead sponsor
Baystate Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 12, 2016 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Reversal of Obesity Cardiomyopathy

NCT01372397
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
35 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Early Phase 1 Interventional

Determinants of Diabetes Remission After Gastric Bypass Surgery

NCT02287285
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Exendin9
Drug
Lead sponsor
Blandine Laferrere
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 24, 2020 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Phase 1 Interventional

A Dose-response of the Effects of Exendin-9,39 on GI Symptoms and Food Intake

NCT02128581
View directory record Official record
Conditions
Obesity, Diabetes, Roux-en-Y Gastric Bypass
Interventions
Exendin-9,39, Saline
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years to 70 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 23, 2019 · Synced Oct 12, 2026, 1:59 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Ketamine and Propofol Combination Versus Propofol for Upper Gastrointestinal Endoscopy

NCT02643979
View directory record Official record
Conditions
Obesity, Bariatrics, Sleep Apnea Syndromes, Gastric Bypass, Endoscopy
Interventions
Ketofol, Propofol, Saline
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 11, 2020 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Comparison Between Gastric Band, Laparoscopic Sleeve Gastrectomy, Gastric Bypass Surgeries

NCT02004561
View directory record Official record
Conditions
Obese Adolescents
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
14 Years to 19 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Retrospective Comparison of Lap and Robotic-Assisted RYGB and SG

NCT04329780
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Not listed
Lead sponsor
Intuitive Surgical
Industry
Eligibility
18 Years and older
Enrollment
1,872 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 13, 2025 · Synced Oct 12, 2026, 1:59 AM EDT
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 Oct 12, 2026, 1:59 AM EDT
Completed Phase 2 Interventional

PRebiotic to IMprovE Calcium Absorption

NCT03272542
View directory record Official record
Conditions
Obesity
Interventions
Prebiotic: soluble corn fiber, Placebo: maltodextrin
Dietary Supplement
Lead sponsor
San Francisco Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 75 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 22, 2020 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Wound Repair and Body Contouring Surgery After Gastric Bypass

NCT00609037
View directory record Official record
Conditions
Obesity, Morbid
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Oct 12, 2026, 1:59 AM EDT
Terminated Not applicable Interventional

Early Intervention for Morbidly Obese Patients After Roux-en-Y Gastric Bypass (RYGB) Surgery

NCT01329692
View directory record Official record
Conditions
Weight Loss, Obesity
Interventions
Lifestyle counseling
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 8, 2012 · Synced Oct 12, 2026, 1:59 AM EDT
Withdrawn Phase 4 Interventional

Changes in Oral Contraceptive Hormones After Gastric Bypass Surgery

NCT01941134
View directory record Official record
Conditions
Bariatric Surgery Candidate, Contraception
Interventions
ethinyl estradiol-levonorgestrel
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 40 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 21, 2018 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Not applicable Interventional

Study on Impact of Lifestyle Change and Weight Loss Before Bariatric Surgery

NCT00623792
View directory record Official record
Conditions
Severe Obesity, Bariatric Surgery
Interventions
Preoperative lifestyle Intervention
Behavioral
Lead sponsor
Duquesne University
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Cohort Study of Weight Loss and Gliosis

NCT03578887
View directory record Official record
Conditions
Obesity, Gliosis, Weight-Loss
Interventions
Behavioral Weight Loss Program, Roux-en-Y Gastric Bypass or Sleeve Gastrectomy
Behavioral · Procedure
Lead sponsor
University of Washington
Other
Eligibility
25 Years to 64 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Oct 12, 2026, 1:59 AM EDT
Terminated No phase listed Observational

Long-Term Follow-up of Ohio State University Medical Center (OSUMC) Bariatric Patients

NCT00700843
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 89 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Phase 4 Interventional Results available

Ketamine vs Hydromorphone

NCT03001843
View directory record Official record
Conditions
Laparoscopic Gastric Bypass, Obesity, Pain, Postoperative
Interventions
Ketamine, Narcotics, pain scale
Drug · Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 9, 2021 · Synced Oct 12, 2026, 1:59 AM EDT
Completed No phase listed Observational

Study of Effects From Gastric Bypass Weight Loss on Brain Tissue

NCT00357344
View directory record Official record
Conditions
Weight Loss
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 45 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
3
States / cities
Phoenix, Arizona • Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 12, 2026, 1:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolism and Bariatric Surgery Study

NCT03371368
View directory record Official record
Conditions
Insulin Resistance, Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGBP), Sleeve Gastrectomy (SG), Very Low Calorie Diet (VLCD)
Procedure · Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Oct 12, 2026, 1:59 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Role of Neural and Hormonal Regulation Factors on Insulin Secretion After Gastric Bypass Surgery

NCT00992901
View directory record Official record
Conditions
Post Bariatricsurgery, Hypoglycemia
Interventions
Exendin-(9-39), Atropine, GLP-1 and GIP
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 65 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2027
U.S. locations
2
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced Oct 12, 2026, 1:59 AM EDT
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 Oct 12, 2026, 1:59 AM EDT