Swallowable capsule to unlock secrets of digestion after Weight-Loss surgery
NCT ID NCT07286968
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how digestion works in people who have had bariatric surgery (like gastric bypass or sleeve gastrectomy) and in people living with obesity. Researchers will collect fluid samples from the stomach and small intestine, and also use a swallowable capsule that measures things like temperature and acidity as it travels through the gut. The goal is to better understand how the body digests food after surgery, which could help improve care for patients in the future.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 51 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jan 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients who have previously undergone a RYGB surgery, SG surgery, or people with obesity.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Participants eligible for inclusion in this Investigation have to meet all of the following criteria: 1. Voluntary written informed consent of the participant has been obtained prior to any screening procedures 2. Age: 18-65 years Specific inclusion criteria for the different patient populations: Patients with obesity: 3. Body Mass Index: \> 30 kg/m2 Patients after bariatric surgery: 4. Surgery: at least one year after Roux-en-Y gastric bypass or sleeve gastrectomy Exclusion Criteria: Participants eligible for this Investigation must not meet any of the following criteria: 1. Patient has history of more than one bariatric surgery 2. Patient has a waist circumference \> 125.6 cm 3. Patient had gastrointestinal surgery in the past three months 4. Patient has a pacemaker, defibrillator, infusion pump, or other portable or implanted electromedical device 5. Patient had frequent exposure to X-rays in the past year 6. Patient has swallowing disorders, among others: dysphagia for food or pills, any oropharyngeal or oesophageal stricture, anxiety or functional abnormality 7. Patient has Crohn's disease or Diverticulitis 8. Patient has gastrointestinal strictures, fistulas or physiological/mechanical obstructions 9. Patient has gastric bezoar 10. Patient has a history of complex bowel resection or known abdominal adhesions 11. Patient has short bowel syndrome or ostomy 12. Patient has currently ongoing infections 13. Patient is planned to undergo usage of rectal foam/enema or treatment with adjuvant chemotherapy or radiotherapy 14. Patient is currently on parenteral diet 15. Patient is planned to undergo MRI procedure during usage of the wireless capsule 16. Patient is working in a professional healthcare facility (e.g. hospital, dental office, emergency room), military area (e.g. submarine, near radar installation), or heavy industrial area (e.g. power plants, automotive, mining, refineries) during the duration of the clinical investigation 17. Patient is pregnant, breastfeeding, actively trying to get pregnant or had recent childbirth in last 6 months 18. Patient cannot discontinue medication that affects gastrointestinal transit time and/or pH for at least 3 days before and during the study (and 4 weeks for weekly/long-acting GLP-1 analogues such as Saxenda, Ozempic, Wegovy, Mounjaro). This includes opioids (e.g., morphine, codeine), proton pump inhibitors (e.g., omeprazole, esomeprazole, pantoprazole), H2-receptor antagonists (e.g., cimetidine, famotidine), antacids, sucralfate, prokinetics (e.g., domperidone, metoclopramide), antidiarrheal agents (e.g., loperamide), antibiotics, probiotics and prebiotics. 19. Any disorder, which in the investigator's opinion might jeopardise participant's safety or compliance with the CIP.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Universitaire Ziekenhuizen KU Leuven
RECRUITINGLeuven, 3000, Netherlands
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