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Showing 1–18 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Second Bariatric Surgery Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Trial Of Paricalcitol and Cholecalciferol(Vitamin D3) in the Treatment Of Secondary Hyperparathyroidism in Patients After ROUX-EN-Y Gastric Bypass Surgery

NCT01138475
View directory record Official record
Conditions
Gastric Bypass, Parathyroid Hormone
Interventions
Paricalcitol, Cholecalciferol, Placebo
Drug
Lead sponsor
Kerstyn C. Zalesin, M.D.
Other
Eligibility
18 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 4, 2026, 7:45 PM EDT
Not listed Not applicable Interventional

Laparoscopic Gastric Bypass for Type 2 Diabetes Mellitus With Body Mass Index (BMI) < 35

NCT00999050
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Gastric bypass for diabetic patients <35 BMI
Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 3, 2011 · Synced Sep 4, 2026, 7:45 PM EDT
Withdrawn Phase 1 Interventional

Bariatric Surgery Telemedicine Study

NCT01378897
View directory record Official record
Conditions
Obesity
Interventions
MedSignals®pillbox,Omron pedometer,VitalSignals®weight scale
Device
Lead sponsor
Baystate Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 10, 2016 · Synced Sep 4, 2026, 7:45 PM EDT
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 10, 2026 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Not applicable Interventional Results available

Continuous Glucose Monitoring to Reduce Hypoglycemia and Improve Safety After Gastric Surgery

NCT03353415
View directory record Official record
Conditions
Hypoglycemia, Reactive, Hypoglycemia
Interventions
Dexcom CGM masked, Dexcom CGM unmasked
Device
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 27, 2023 · Synced Sep 4, 2026, 7:45 PM EDT
Recruiting Phase 3 Interventional

Bisphosphonate Use to Mitigate Bone Loss Secondary to Bariatric Surgery

NCT04922333
View directory record Official record
Conditions
Bone Loss
Interventions
Risedronate, Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
30 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Sep 4, 2026, 7:45 PM EDT
Completed No phase listed Observational Results available

Bariatric Surgery for Morbid Obesity

NCT00675558
View directory record Official record
Conditions
Obesity, Morbid Obesity
Interventions
Initial Surgery, Second Bariatric Surgery
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 4, 2026, 7:45 PM 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 3, 2013 · Synced Sep 4, 2026, 7:45 PM EDT
Recruiting Phase 1 Interventional

Semaglutide (SEMA) for Alcohol Use Disorder (AUD) After Metabolic and Bariatric Surgery (MBS)

NCT07223983
View directory record Official record
Conditions
Alcohol Use Disorder, Weight Loss, Bariatric Surgery Patients
Interventions
Semaglutide 1.0 mg
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 4, 2026, 7:45 PM EDT
Not listed Not applicable Interventional

Resolution of Comorbidities, Safety and Efficacy of Greater Curvature Plication in Obese Patients.

NCT01512940
View directory record Official record
Conditions
Obesity
Interventions
Laparoscopic Greater Curvature Plication
Procedure
Lead sponsor
Singh, Kuldeep, M.D., P.A.
Individual
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 12, 2012 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Use of Non-Invasive Positive Pressure Ventilation in Patients With Severe Obesity Undergoing Upper Endoscopy Procedures

NCT03529461
View directory record Official record
Conditions
Severe Obesity, Hypoxia
Interventions
Non-invasive positive pressure ventilation through nasal mask, Rescue non-invasive positive pressure ventilation through nasal mask, Secondary rescue maneuvers
Device · Other
Lead sponsor
Bristol Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Bristol, Connecticut
Source: ClinicalTrials.gov public record
Updated May 30, 2019 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Phase 1 Interventional

Effect of Ghrelin on Glucose Metabolism After Bariatric Surgery

NCT02953587
View directory record Official record
Conditions
Obesity
Interventions
Oral Glucose Tolerance Test (OGTT), Human Ghrelin, Saline
Procedure · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Single Anastomosis Duodenal Ileal Bypass (SADI) for Sleeve Revision

NCT04165694
View directory record Official record
Conditions
Bariatric Surgery Candidate, Severe Obesity
Interventions
Single Anastomosis Duodenal Ileal Bypass (SADI)
Procedure
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 100 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Time Restricted Eating Pilot - Bariatrics

NCT04006366
View directory record Official record
Conditions
Time Restricted Feeding
Interventions
Time restricted feeding
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 16, 2020 · Synced Sep 4, 2026, 7:45 PM EDT
Active, not recruiting Phase 2Phase 3 Interventional

GLP-1 Receptor Agonists Post-Bariatric Surgery (GRABS) Pilot Trial

NCT06162715
View directory record Official record
Conditions
Severe Obesity, Obesity, BMI Greater Than 30
Interventions
Tirzepatide, Standard of Care post-gastric bypass
Drug · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
25 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 4, 2026, 7:45 PM EDT
Not listed Not applicable Interventional

Cryoablation for Benign Gastrointestinal Anastomotic Strictures

NCT04372784
View directory record Official record
Conditions
Esophageal Stricture, Duodenal Stricture, Jejunal Stricture, Anastomotic Stricture of Small Intestine
Interventions
Cryotherapy, Esophagogastroduodenoscopy with Balloon Dilatation
Device · Procedure
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 4, 2020 · Synced Sep 4, 2026, 7:45 PM EDT
Completed Not applicable Interventional

Effects of Wolffia Globosa (Mankai) in Patients Undergoing Bariatric Surgery.

NCT03999632
View directory record Official record
Conditions
Bariatric Surgery Candidate, Diet Modification
Interventions
Dietary modification with introduction of Mankai
Other
Lead sponsor
Cleveland Clinic Florida
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Sep 4, 2026, 7:45 PM EDT
Terminated No phase listed Observational

Eye Movement Testing in Patients With Obesity and the Impact of Weight Loss Surgery

NCT04940429
View directory record Official record
Conditions
Bariatric Surgery Candidate, Obesity, Morbid
Interventions
Neurofit, Psychometric hepatic encephalopathy score
Device · Diagnostic Test
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2021 · Synced Sep 4, 2026, 7:45 PM EDT