Factors that determine long-term success after bariatric surgery
Official title: Determinants of the Long-Term Success of Bariatric Surgery "- Multicenter Regional Observational Study: Regional Multicentre Prospective Study
Run by University Hospital, Lille · NCT03517072 · Data updated 2026-11-12
We will see which patient and surgical factors are linked to lasting weight loss in people who had bariatric surgery at least five years ago.
Quick facts
| Study type | Observational |
|---|---|
| Sex | All |
| Enrollment | 1000 (estimated) |
| Sponsor | University Hospital, Lille Academic / other |
| Locations | 4 sites (Arras and 3 other locations) |
| Status | Recruiting |
| Started | July 31, 2018 |
| Main results expected | January 2027 |
| Study ends | January 2027 |
| Registry record updated | May 22, 2026 |
| Trial ID | NCT03517072 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults who underwent bariatric surgery at least five years ago and are able to provide informed consent and attend follow-up at the participating centers are ideal candidates.
✕Probably not a fit
People who had bariatric surgery less than five years ago, are unable to consent, or cannot participate in follow-up visits are unlikely to benefit from this project.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is an observational follow-up of patients who underwent bariatric procedures five or more years ago to document long-term outcomes such as sustained weight loss, comorbidity status, complications, and quality of life. Clinical records, anthropometric measures, and patient-reported information will be collected at participating centers and analyzed to identify predictors of durable success or failure. The project aims to compare outcomes across different surgical techniques and patient profiles to inform surgical decision-making. Findings will be used to develop criteria for personalized surgical planning and targeted follow-up.
Why it matters
Potential benefit: If successful, the results could help clinicians choose the most appropriate operation for each patient and tailor follow-up to reduce long-term weight regain and complications.
How similar studies have gone: Prior cohort and registry studies have suggested some predictors of long-term outcomes after bariatric surgery, but results are inconsistent and no clear consensus exists.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients who received bariatric surgery 5 years ago. Exclusion Criteria: * Refusal to participate in the study, * Unable to receive informed information, * Unable to participate in the study
Where it's running
-
Ch Arras
Arras, France Recruiting -
Ch Boulogne-Sur-Mer
Boulogne-sur-Mer, France Recruiting -
Hôpital Claude Huriez, CHU
Lille, France Recruiting -
Ch de Valenciennes
Valenciennes, France Recruiting
Study contacts
- Principal investigator: François PATTOU, MD,PhD — University Hospital, Lille
- Study coordinator: François PATTOU, MD,PhD
- Email: françois.pattou@chru-lille.fr
- Phone: 3 20 44 42 73
Similar studies
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.