An observational study in Morbid Obesity and Bariatric Surgery Candidate, sponsored by University Hospital, Lille. Recruiting at 4 sites in France. Per ClinicalTrials.gov, last updated 2026-05-22.
Sponsored by University Hospital, Lille · Observational
The management of obesity is based on a multidisciplinary approach and justifies the use of surgery in patients with the most severe forms. Surgery for obesity or bariatric surgery generally allows rapid and significant weight loss however it is associated with significant risks, and its long-term results remain heterogeneous and unpredictable. Long-term data will clarify the role of different types of bariatric surgery in surgical strategy, improve patient information and identify predictors of failure in order to provide personalised and tailored surgery for each candidate .
Currently, there is insufficient data to determine the persistence over time of the positive results of bariatric surgery on weight loss. Moreover, there is no consensus or criteria for choosing one surgical weight loss procedure over another. The best choice for one patient may not be the most appropriate for another.
The results of this project will allow to better select obese patients likely to benefit from bariatric surgery, and to further personalise the management of severe obesity.
922 studies on the registry are indexed under Obesity, Morbid; 172 are open to participants now.
This study's planned enrollment of 1,000 is above the median of 78 across 306 observational studies indexed under Obesity, Morbid.
Browse Obesity, Morbid studies →University Hospital, Lille is the lead sponsor of 625 studies on the registry; 141 are open to participants now.
Counted across the registry records on this site, refreshed daily.
The project relies on the network of Specialised Centres for the Management of Severe Obesity (Lille, Arras, Boulogne, Valenciennes).
Patients with severe obesity who underwent bariatric surgery 5 years ago will be included in each of the centre, during the usual multidisciplinary care visit.
Exclusion Criteria:
Success rate in terms of weight loss
Rate of patients who lost at least 20 of their initial body weight
Time frame: at 5 years after bariatric surgery
Success rate in terms of weight loss according to type of bariatric surgery
Rate of patients who lost at least 20 of their initial body weight at 1 year according to type of bariatric surgery (Gastric by-pass in Y or Omega, sleeve gastrectomy, and gastric band)
Time frame: at 1 year after bariatric surgery
Success rate in terms of weight loss according to type of bariatric surgery
Rate of patients who lost at least 20 of their initial body weight at 5 years according to type of bariatric surgery (Gastric by-pass in Y or Omega, sleeve gastrectomy, and gastric band)
Time frame: at 5 years after bariatric surgery
Rate of re- interventions related to bariatric surgery
Evaluation of re-interventions following bariatric surgery
Time frame: 5 years
Lost rate seen
Evaluation of lost to follow-up
Time frame: at 5 years after bariatric surgery
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University Hospital, Lille