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ClinicalTrials.gov public records Last synced Sep 30, 2026, 10:29 PM EDT

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Showing 97–120 of 213 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Gastric Bypass Clear all
Completed No phase listed Observational

Adolescent Gastric By-pass and Diabetic Precursors

NCT00360373
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
15 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Sep 30, 2026, 10:29 PM EDT
Completed No phase listed Observational

Gastric Bypass After Previous Anti-reflux Surgery

NCT01041105
View directory record Official record
Conditions
Clinically Severe Obesity, Gastroesophageal Reflux Disease
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 60 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jan 1, 2010 · Synced Sep 30, 2026, 10:29 PM EDT
Not listed Not applicable Interventional

Intraperitoneal Aerosolized Delivery of a Local Anesthetic for Post Operative Pain Management. A Double Blind, Randomised Controlled Clinical Trial.

NCT00286286
View directory record Official record
Conditions
Pain, Postoperative, Postoperative Pain, Abdominal Pain, Obesity, Pneumoperitoneum
Interventions
Intraperitoneal Aerosolization System, IntraMyst
Device
Lead sponsor
Northgate Technologies
Industry
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
2
States / cities
Elk Grove Village, Illinois • Hoffman Estates, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 11, 2007 · Synced Sep 30, 2026, 10:29 PM EDT
Terminated Not applicable Interventional

Roux-en-Y Gastric Bypass Versus Loop Gastrojejunostomy for Malignant Gastric Outlet Obstruction

NCT05986890
View directory record Official record
Conditions
Malignant Gastric Outlet Obstruction
Interventions
Roux-en-Y Bypass, gastrojejunostomy
Procedure
Lead sponsor
Corewell Health West
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Grand Rapids, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Mechanisms of Diabetes Relapse After Bariatric Surgery

NCT01516320
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Roux-en-Y Gastric Bypass, Laparoscopic adjustable gastric banding, Vertical Sleeve Gastrectomy
Procedure
Lead sponsor
Blandine Laferrere
Other
Eligibility
18 Years to 65 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Sep 30, 2026, 10:29 PM EDT
Active, not recruiting No phase listed Observational

Long Term Outcomes of Bariatric Patients Treated With Surgery or Endoscopy

NCT03705416
View directory record Official record
Conditions
GERD, Obesity
Interventions
Endoscopy, Surgery
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Enrollment
250 participants
Timeline
2019 – 2028
U.S. locations
6
States / cities
Baltimore, Maryland • New Hyde Park, New York • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Sep 30, 2026, 10:29 PM EDT
Active, not recruiting No phase listed Observational

Biological Sample Repository for Gastrointestinal Disorders

NCT05874726
View directory record Official record
Conditions
Obesity, Obesity, Morbid, Obesity, Primary, Gastro-Intestinal Disorder, Overweight and Obesity, Overweight, Overweight or Obesity, Diabetes Type 2, Diabetes Mellitus, Diabetes Mellitus, Type 2, Hypertension, Hyperlipidemias, Sleep Apnea, GERD, Gastroesophageal Reflux, Musculoskeletal Pain Disorder, Cancer
Interventions
Blood Collection, Urine Collection, Tissue Sample Collection
Diagnostic Test
Lead sponsor
Pichamol Jirapinyo, MD, MPH
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 30, 2026, 10:29 PM EDT
Completed No phase listed Observational

Reversal of Obese/Diabetic Cardiomyopathy After Gastric Bypass Surgery

NCT01067209
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
35 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 11, 2024 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Phase 4 Interventional Results available

A Pilot Study of the Efficacy of Alli in the Management of Pre-operative Weight Loss Required for Bariatric Surgery.

NCT01035333
View directory record Official record
Conditions
Obesity
Interventions
Orlistat
Drug
Lead sponsor
Albany College of Pharmacy and Health Sciences
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2014 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

The Effect of Physical Activity in Individuals With Post-bariatric Hypoglycemia

NCT05560789
View directory record Official record
Conditions
Hypoglycemia, Roux-en-Y Gastric Bypass, Post-bariatric Hypoglycemia, Physical Activity
Interventions
Physical activity (cycling on a stationary bicycle ergometer or walking on a treadmill)
Behavioral
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 60 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 8, 2024 · Synced Sep 30, 2026, 10:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Prospective Study Evaluating The Utility of Transnasal Endoscopy With Roux en Y Gastric Bypass

NCT01526772
View directory record Official record
Conditions
Obesity
Interventions
Endoscopy
Procedure
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 85 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 7, 2017 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Post-Gastric Bypass Hypoglycemia

NCT01933490
View directory record Official record
Conditions
Hyperinsulinemic Hypoglycemia
Interventions
high carbohydrate test meal, high carbohydrate test meal after pre-treatment with rapid acting aspart insulin, high fructose , low glucose test meal with carbohydrate and caloric content similar to the control meal
Other
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Sep 30, 2026, 10:29 PM 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 Sep 30, 2026, 10:29 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effect of Liposomal Bupivacaine on Post Operative Pain and Narcotic Use After Bariatric Surgery

NCT03196505
View directory record Official record
Conditions
Bariatric Surgery Candidate, Pain, Postoperative
Interventions
Exparel 266 MG Per 20 ML Injection, Bupivacaine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
231 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Nov 25, 2020 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Randomized Trial Comparing Laparoscopic Roux-en-y Gastric Bypass to Micro-laparoscopic Roux-en-y Gastric Bypass

NCT01183273
View directory record Official record
Conditions
Obesity
Interventions
Microlaparoscopic gastric bypass, Laparoscopic Surgery
Procedure
Lead sponsor
Suzanne J. Rose
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Danbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 22, 2014 · Synced Sep 30, 2026, 10:29 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Glucagon-like Peptide 1, Glucose Metabolism and Gastric Bypass

NCT01803451
View directory record Official record
Conditions
Post-bariatric Surgery
Interventions
exendin -(9-39)
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2027
U.S. locations
2
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced Sep 30, 2026, 10:29 PM EDT
Withdrawn Phase 1Phase 2 Interventional

The Effect of Obstructive Sleep Apnea on Medical Outcomes After Gastric Bypass Surgery

NCT00671983
View directory record Official record
Conditions
Obesity, Sleep Apnea, Obstructive
Interventions
Neurocognitive Testing
Procedure
Lead sponsor
Stanford University
Other
Eligibility
30 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Phase 4 Interventional Results available

Clinical Efficacy and Safety of Using 3.0mg Liraglutide to Treat Weight Regain After Roux-en-Y Gastric Bypass Surgery

NCT03048578
View directory record Official record
Conditions
Obesity
Interventions
Saxenda, Placebo
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 9, 2022 · Synced Sep 30, 2026, 10:29 PM EDT
Active, not recruiting Not applicable Interventional

Bariatric Surgery Versus Diet Alone in the Bile Acid Pathway and Weight Loss

NCT03238794
View directory record Official record
Conditions
Obesity
Interventions
Roux-En-Y Gastric Bypass, Low-calorie Diet
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Obesity Surgery and Kidney Transplant for Patients With Obesity and Renal Failure

NCT02128802
View directory record Official record
Conditions
Severe Obesity, Renal Failure
Interventions
Gastric Bypass, Weight Loss Program
Procedure · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 59 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Phase 1 Interventional

Study to Examine the Effect of Gastric Bypass Surgery on Venlafaxine ER Blood Levels

NCT01867255
View directory record Official record
Conditions
Bariatric Surgery, Gastric Bypass, Roux-en-Y Gastric Bypass
Interventions
venlafaxine ER (extended-release) 75 mg
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 23, 2015 · Synced Sep 30, 2026, 10:29 PM EDT
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 Sep 30, 2026, 10:29 PM EDT
Withdrawn No phase listed Observational

Bariatric Surgery Outcomes

NCT01057784
View directory record Official record
Conditions
Morbid Obesity
Interventions
Bariatric surgery.
Procedure
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2014 · Synced Sep 30, 2026, 10:29 PM EDT
Completed Not applicable Interventional

Impact of GBS on CVD in Type 2 Diabetes Mellitus

NCT00787670
View directory record Official record
Conditions
Obesity, Type 2 Diabetes Mellitus
Interventions
Diabetes Support and Education, gastric bypass surgery, Tissue Control Group
Other · Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years to 60 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Sep 30, 2026, 10:29 PM EDT