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ClinicalTrials.gov public records Last synced Oct 1, 2026, 10:36 PM EDT

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Showing 73–88 of 88 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Post-gastric Bypass Clear all
Recruiting Phase 4 Interventional

OPEN Versus InTact Capsule Proton Pump Inhibitors for the Treatment of Marginal Ulcers

NCT05799105
View directory record Official record
Conditions
Marginal Ulcer
Interventions
Omeprazole 40 milligrams
Drug
Lead sponsor
Stephen Firkins
Other
Eligibility
Not listed
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 1, 2026, 10:36 PM EDT
Completed Not applicable Interventional

Enhanced Recovery After Surgery in Laparoscopic Sleeve Gastrectomy

NCT03520803
View directory record Official record
Conditions
Obesity
Interventions
Enhanced recovery after surgery protocol
Other
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Oct 1, 2026, 10:36 PM 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 1, 2026, 10:36 PM EDT
Completed No phase listed Observational

Chronic Marginal Ulcers After Gastric Bypass

NCT01041079
View directory record Official record
Conditions
Marginal Ulcer, Chronic Ulcer Disease, Persistent Ulcer Disease, Recurrent Ulcer Disease, Late Morbidity After Gastric Bypass
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
50 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 Oct 1, 2026, 10:36 PM EDT
Completed No phase listed Observational

Perforated Marginal Ulcer After Gastric Bypass

NCT01041196
View directory record Official record
Conditions
Ulcer Disease After Gastric Bypass, Marginal Ulcer, Perforated Marginal Ulcer, Acutely Perforated Marginal Ulcer
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jan 1, 2010 · Synced Oct 1, 2026, 10:36 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 Oct 1, 2026, 10:36 PM EDT
Completed No phase listed Observational

Relationship Between Changes in Gut Hormones After Gastric Bypass and Gastric Banding and Improvements in Diabetes

NCT01153438
View directory record Official record
Conditions
Type 2 Diabetes, Obesity, Bariatric Surgery
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2016 · Synced Oct 1, 2026, 10:36 PM EDT
Enrolling by invitation No phase listed Observational

Physiologic and Functional Adaptations of Insulin Sensitive Tissues

NCT03407833
View directory record Official record
Conditions
Diabetes, Insulin Resistance, Obesity, Bariatric Surgery Candidate, Roux-en-y Gastric Bypass, Liver Diseases
Interventions
Endoscopy biopsy, Surgical biopsy, Mixed-meal tolerance test, Excised Liver Tissue Sampling
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 1, 2026, 10:36 PM EDT
Terminated No phase listed Observational

Studies of Biological Changes Related to Weight Loss After Gastric Bypass Surgery

NCT00120562
View directory record Official record
Conditions
Obesity, Morbid Obesity, Weight Loss
Interventions
Gastric Bypass Surgery
Procedure
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 28, 2009 · Synced Oct 1, 2026, 10:36 PM EDT
Recruiting Not applicable Interventional

Autonomic Neural Blockade in Bariatric Surgery

NCT07104825
View directory record Official record
Conditions
Bariatric Surgery Candidate, Pain, Postoperative, Nausea and Vomiting, Postoperative, Opioid Use
Interventions
Intraoperative autonomic neural blockade (ANB), Laparoscopic Standard of Care Abdominal Wall Block
Procedure
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 1, 2026, 10:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cerebrospinal Fluid Biomarkers in Bariatric Surgery

NCT04350892
View directory record Official record
Conditions
Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGB), Sleeve Gastrectomy (SG), Very Low Calorie Diet (VLCD)
Procedure · Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 1, 2026, 10:36 PM EDT
Completed No phase listed Observational

Roux-en-Y Gastric Bypass and Weight Regain

NCT02302898
View directory record Official record
Conditions
Obesity
Interventions
Eating Behavior Evaluation, Measurement of Functional gastric volume, Measurement of gastric pouch and GJ size
Behavioral · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
21 Years to 60 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Oct 1, 2026, 10:36 PM 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 1, 2026, 10:36 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Mechanisms of Post-Bariatric Hypoglycemia

NCT04428866
View directory record Official record
Conditions
Hypoglycemia
Interventions
Continuous Glucose Monitoring, activity monitor, Mixed meal tolerance test, Glucagon Sensitivity Testing, Hypoglycemic Hyperinsulinemic Clamp, analysis of fecal microbiome
Diagnostic Test
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 70 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 5, 2024 · Synced Oct 1, 2026, 10:36 PM EDT
Completed Not applicable Interventional Results available

Treatment of Diabetes After Gastric Bypass With Sitagliptin

NCT01512797
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Sitagliptin phosphate, Placebo
Drug · Other
Lead sponsor
Blandine Laferrere
Other
Eligibility
18 Years to 70 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Oct 1, 2026, 10:36 PM 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 1, 2026, 10:36 PM EDT