Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 26, 2026, 3:01 AM EDT

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Showing 1–24 of 342 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Malnutrition, Obesity, Weight Loss, Micronutrient Deficiency
Interventions
Small bowel length measurement
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
470 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Gastric Bypass Surgery, Gastric Banding, Type 2 Diabetes
Interventions
Not listed
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
20 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
New York, New York
Conditions
Obesity, Morbid, Surgery, Bariatric Surgery Candidate
Interventions
Neurontin, Dilaudid Injectable Product, Marcaine Injectable Product, Oxycodone Hydrochloride, Hycet 7.5Mg-325Mg/15Ml Solution, Zofran Injection, Scopolamine patch, Ativan, Flexeril Oral Product, Tylenol Suspension
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
35 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Sacramento, California
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGB), Caloric Restriction, Exendin-9,39, Normal Saline
Procedure · Behavioral · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Hershey, Pennsylvania
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
Conditions
Nonalcoholic Fatty Liver Disease, Nonalcoholic Steatohepatitis, Bariatric Surgery Candidate, Obesity, Morbid
Interventions
Not listed
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
22 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Columbia, Missouri
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
Conditions
Obesity, Morbid
Interventions
vBloc Maestro Rechargeable System, vBloc Achieve Weight Management Program, Control Weight Management (CWM) program
Device · Other
Lead sponsor
ReShape Lifesciences
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
2
States / cities
Scottsdale, Arizona • Mineola, New York
Conditions
Obesity, Type 2 Diabetes
Interventions
laparoscopic roux en y gastric bypass operation, medical management
Procedure · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Cleveland, Ohio
Conditions
Obesity, Morbid, Hypertension, Bariatric Surgery Candidate
Interventions
Antibiotic
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
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
Completed No phase listed Observational Accepts healthy volunteers

Prospective Study of Hormone Levels After Bariatric Surgery

NCT00627315
Conditions
Obesity
Interventions
Gastric bypass, Gastric banding
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2018
U.S. locations
1
States / cities
New York, New York
Conditions
Obesity
Interventions
sleeve gastrectomy, No sleeve gastrectomy
Procedure
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Hartford, Connecticut
Conditions
Cholelithiasis, Ultrasonography, Laparoscopic Gastric Bypass
Interventions
Not listed
Lead sponsor
Gundersen Lutheran Medical Foundation
Other
Eligibility
18 Years and older
Enrollment
253 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
La Crosse, Wisconsin
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
Conditions
Breast Cancer, Morbid Obesity, Bariatric Surgery Candidate
Interventions
Bariatric surgery
Procedure
Lead sponsor
The Cleveland Clinic
Other
Eligibility
40 Years to 74 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Weston, Florida
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
Completed Phase 1 Interventional Results available

PET Imaging and Bariatric Surgery

NCT00801827
Conditions
Obesity, Morbid
Interventions
F-18 (fallypride)
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Bariatric Surgery Candidate, Bone Loss
Interventions
Denosumab, Placebo, Zoledronic Acid
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
25 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California • Boston, Massachusetts
Conditions
Bariatric Surgery, Sleeve Gastrectomy, Obesity
Interventions
In-laboratory assessment
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
22 Years to 62 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Completed No phase listed Observational Results available

Diabetes and Gastric By- Pass

NCT01153516
Conditions
Type 2 Diabetes
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Bariatric Surgery Patients
Interventions
Not listed
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Galveston, Texas
Conditions
Vitamin D Deficiency, Vitamin D Insufficiency
Interventions
Vitamin D, Placebo, Standard of Care
Dietary Supplement · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 64 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Baltimore, Maryland