10-Year study aims to find safer gastric bypass technique
NCT ID NCT04930029
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study follows 320 people who had omega gastric bypass surgery 10 years ago to compare long-term side effects between two surgical techniques (150 cm vs 200 cm loop). Researchers will check for serious complications, nutritional problems, and weight loss. The goal is to determine which method is safer over the long term.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Omega gastric bypass surgery (with 150 cm or 200 cm biliary limb)
- What this could lead to
- If successful, this study could help surgeons choose the safer type of omega gastric bypass, reducing long-term complications for people with obesity.
- What could go wrong
- This is an observational study, not a treatment trial, so it won't directly test a new therapy. Results may take years and might not apply to all patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 320 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2021
- Expected to finish
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Jul 2026
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
This study involves patients: * operated between 2008 and 2013 for an OAGB with a 150 or 200cm biliary limb * fulfilling the HAS criteria(HAS, 2009) at the time of their surgery: BMI ≥ 40 kg/m2 or BMI ≥ 35 kg/m2 associated with a comorbidity likely to be improved by weight loss * benefiting from a follow-up.
- Ages
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18 years and older
- 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: * Patients who received 10 ± 2 years ago (between 2009 and 2013) an OAGB with a 150 or 200cm biliary limb. Patients should be consecutive at each center. * Patients fulfilling the criteria of indication for bariatric surgery at the time of their intervention according to the recommendations of the HAS (HAS, 2009) in an expert center. * Patients agreeing to perform an endoscopic evaluation with biopsies at 10 years * Patients who gave their consent * Patients with health insurance coverage Exclusion Criteria: * Contraindication to bariatric surgery defined according to HAS recommendations (HAS, 2009) * Persons deprived of liberty, under guardianship, or under curatorship * Patients included in a protocol with a conflict of interest with OMEGA10.
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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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Hôpital Claude Huriez - Service de chirurgie générale et endocrinienne
RECRUITINGLille, France
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