72 completed, 44 unknown, 16 recruiting, 12 active not recruiting. 85 Not applicable, 8 Phase 3, 7 Phase 4, 6 Phase 2.
Follow Gastric Bypass: new trials by email Literature Review of Gastric Bypass trials Research Report on Gastric Bypass
Tick up to 5 trials to compare them side by side (eligibility, arms, endpoints, adverse events) in a Literature Matrix.
| Trial | Phase | Status | Sponsor | Enrollment | Start | Updated |
|---|---|---|---|---|---|---|
| Metabolic Surgery for Atrial Fibrillation Elimination Roux-en-Y Gastric Bypass or Sleeve Gastrectomy, Anti-Obesity Medication (AOM) treatment - Atrial Fibrillation, Obesity and Obesity-related Medical Conditions | Phase 4 | Not yet recruiting | Ali Aminian | 100 | 2026-11-01 | 2026-04-17 |
| Glycemic Variability After SASI Versus Roux-en-Y Gastric Bypass Single Anastomosis Sleeve Ileal Bypass, Roux-en-Y Gastric Bypass - Obesity, Morbid | Not applicable | Recruiting | Hospitales Universitarios Virgen del Rocío | 68 | 2026-07-14 | 2026-10-13 |
| Impact of Bariatric Surgery on Female Sexual Function and Sex Hormones Sleeve Gastrectomy, Gastric Bypass - Morbid Obesity | Recruiting | Cairo University | 40 | 2026-06-05 | 2026-06-10 | |
| Reflux Disease After Gastric Bypass Versus Sleeve Gastrectomy in Morbid Obese Patients: an Italian Study Roux-en-Y-Gastric bypass, Sleeve gastrectomy, SG - Gastroesophageal Reflux Disease, Obesity | Not applicable | Not yet recruiting | Niguarda Hospital | 128 | 2026-05-01 | 2026-04-16 |
| Effects on Remission of Type 2 Diabetes Mellitus Following Gastric Bypass Alone vs Gastric Bypass Combined With Truncal Vagotomy Roux-en-Y Gastric Bypass plus Truncal Vagotomy, Roux-en-Y Gastric Bypass - Diabetes Mellitus Type 2 | Not applicable | Recruiting | University Research Institute for the Study of Genetic & Malignant Disorders in Childhood | 40 | 2026-04-24 | 2026-04-30 |
| Stool Analysis After Sleeve Gastrectomy vs Gastric Bypass Laparoscopic Sleeve Gastrectomy, Mini Gastric Bypass, Roux-en-Y Gastric Bypass - Morbid Obesity | Recruiting | Cairo University | 50 | 2026-04-05 | 2026-05-18 | |
| Binge Eating, Depression and Anxiety Outcomes After Sleeve Gastrectomy Versus Gastric Bypass: A Cohort Study Laparoscopic Sleeve Gastrectomy, Gastric Bypass - Obesity | Not applicable | Recruiting | Cairo University | 100 | 2026-03-11 | 2026-05-20 |
| Comparison of Nissen-Sleeve and Gastric Bypass for GERD in Obese Patients Nissen-Sleeve Gastrectomy (N-SG), Roux-en-Y Gastric Bypass (RYGB), Sleeve Gastrectomy (SG) - Gastro Esophageal Reflux, Severe Obesity | Not applicable | Recruiting | Jagiellonian University | 560 | 2025-07-31 | 2025-09-05 |
| Study of the Link Between MASH ( Metabolic Dysfunction-Associated Steatohepatitis) and MAMs (Mitochondria-Associated Membranes ) Alteration in Patients Undergoing Bariatric Surgery - MAMBA Bariatric surgery (Sleeve Gastrectomy or Gastric Bypass) - Metabolic Dysfunction-Associated Steatotic Liver Disease, Metabolic Dysfunction-Associated Steatohepatitis | Recruiting | Hospices Civils de Lyon | 20 | 2025-04-15 | 2026-01-15 | |
| Inflammation's Impact on Heart Disease and Diabetes Gastric bypass - Inflammation, Obesity and Type 2 Diabetes | Recruiting | University of Aarhus | 250 | 2025-01-30 | 2025-02-03 | |
| Bariatric Surgery vs. Semaglutide vs. Tirzepatide Bariatric Surgery, Semaglutide, Tirzepatide - Obesity and Obesity-related Medical Conditions | Phase 4 | Active not recruiting | Ali Aminian | 140 | 2025-01-29 | 2026-09-03 |
| Non-Invasive MASLD Diagnosis & T2D Remission Biomarkers Bariatric Surgery - MASLD, T2DM (Type 2 Diabetes Mellitus) | Active not recruiting | Royal College of Surgeons in Ireland - Medical University of Bahrain | 163 | 2025-01-01 | 2025-09-15 | |
| AJYR+GV vs RYGB for GERD sleeve gastrectomy with Roux-en-Y antrojejunal anastomosis, AJYR+SG, Roux-en-Y gastric bypass, RYGB - Obesity, Morbid, Gastroesophageal Reflux (GERD) | Not applicable | Active not recruiting | Victor Dib Institute | 60 | 2024-11-28 | 2026-08-17 |
| Comparison of Hormonal Response to a Mixed-Meal Tolerance Test After Laparoscopic Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy With Duodenojejunal Bypass in Patients With Super Morbid Obesity Sleeve gastrectomy with duodenojejunal bypass, Roux-en-Y gastric bypass - Bariatric Surgery, Hormonal Response | Not applicable | Recruiting | Chulalongkorn University | 32 | 2024-08-08 | 2026-08-06 |
| Fibrosis Lessens After Metabolic Surgery Metabolic surgery, Incretin-Based Therapy - Metabolic Dysfunction-associated Steatotic Liver Disease (MASLD), Non-Alcoholic Fatty Liver Disease | Phase 4 | Recruiting | The Cleveland Clinic | 120 | 2024-07-11 | 2026-07-31 |
| Early Postoperative Complications in Patients Undergoing Bariatric Surgery Sleeve gastrectomy, Roux-en-Y gastric bypass, mini-gastric bypass, SADIS, intragastric balloon insertion, and gastric band placement are bariatric surgeries. - Bariatric Surgery Candidate, Complication,Postoperative | Unknown | Instituto Mexicano del Seguro Social | 3000 | 2024-04-01 | 2024-04-18 | |
| The Relationship Between Olfactory and Gustatory Senses, Hedonic Hunger, and Diet Quality After Bariatric Surgery Sleeve Gastrectomy (SG) and Roux-en-Y Gastric Bypass (RYGB) - Obesity, Taste Disorders | Completed | Hanife Köksal | 101 | 2024-01-01 | 2025-12-17 | |
| Omega Gastric Bypass (150cm) Compared to the Roux-en-Y Gastric Bypass (YOMEGA-2 Multicentric Trial) Laparoscopic OAGB, Laparoscopic RYGB - Obesity, Morbid | Not applicable | Recruiting | Assistance Publique - Hôpitaux de Paris | 368 | 2023-11-13 | 2026-02-27 |
| Roux-en-Y Gastric Bypass Versus Loop Gastrojejunostomy for Malignant Gastric Outlet Obstruction Roux-en-Y Bypass, gastrojejunostomy - Malignant Gastric Outlet Obstruction | Not applicable | Terminated | Corewell Health West | 5 | 2023-08-17 | 2026-07-16 |
| SH Dr. Chen Gastric Bypass Study Gastric bypass with transection of vagal nerves, Gastric bypass without transection of vagal nerves - Gastric Bypass | Not applicable | Active not recruiting | Sanford Health | 50 | 2022-08-31 | 2025-09-30 |
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Obesity (76) · Obesity, Morbid (50) · Diabetes Mellitus, Type 2 (36) · Weight Loss (22) · Diabetes Mellitus (15) · Insulin Resistance (15) · Metabolic Syndrome (9) · Gastroesophageal Reflux (7) · Non-alcoholic Fatty Liver Disease (6) · Postoperative Complications (5) · Inflammation (4) · Overweight (4) · Stomach Neoplasms (4) · Depression (3) · Anxiety Disorders (2)
Catholic University of the Sacred Heart (4) · Columbia University (4) · First Affiliated Hospital of Jinan University (4) · University of Aarhus (4) · Cairo University (3) · Imperial College London (3) · Mayo Clinic (3) · Ali Aminian (2) · Assistance Publique - Hôpitaux de Paris (2) · Federal University of São Paulo (2) · Göteborg University (2) · Hospices Civils de Lyon (2) · Hospital Universitario Virgen de la Arrixaca (2) · Hvidovre University Hospital (2) · IHU Strasbourg (2)
United States (33) · Italy (12) · Brazil (10) · France (10) · Spain (10) · Sweden (9) · Switzerland (9) · China (8) · Denmark (8) · United Kingdom (8) · South Korea (7) · Norway (5) · Germany (4) · Netherlands (4) · Egypt (3)
Ali Aminian, MD (2) · Geltrude Mingrone, MD (2) · Judith Korner, MD,PhD (2) · Miguel J Garcia-Oria, MD PhD FACS (2) · Nicola Scopinaro, MD (2) · Abed Khalaileh, MD, PhD (1) · Ali Aminani (1) · Ali Aminian (1) · Allison B. Goldfine, MD (1) · Almino Cardoso Ramos, MD, PhD (1) · Andrea M Isidori, MD, PhD (1) · Andres J Acosta, MD (1)
PMID 26369473, PMID 28199805, PMID 34523717, PMID 10929154, PMID 11238785, PMID 11304102, PMID 11433900, PMID 11565517, PMID 11565518, PMID 11832527, PMID 12684357, PMID 12740148, PMID 15185306, PMID 15273542, PMID 15380496, PMID 15632335, PMID 15946441, PMID 15973097, PMID 16120818, PMID 16188903, PMID 16259892, PMID 16545157, PMID 17060766, PMID 17393509, PMID 17715408, PMID 17715409, PMID 18430778, PMID 18435772, PMID 18701613, PMID 18982397, PMID 19420913, PMID 19638921, PMID 19691668, PMID 19730234, PMID 19808241, PMID 19954692, PMID 20010088, PMID 20150934, PMID 20484482, PMID 20700413, PMID 20876408, PMID 21339423, PMID 21444079, PMID 21475009, PMID 21541815, PMID 21562405, PMID 21602457, PMID 21693741, PMID 21890430, PMID 21931075
2017 (2), R01DK072011 (2), 2008 (1), K23DK114460 (1), K24HL144917 (1), R01DK067561 (1), R01DK089036 (1), R01DK089557 (1), R01DK124465 (1), R21DK081050 (1)