Cohort study on severe obesity and bariatric surgery outcomes

Cohorte Obésité Bichat LOuis Mourier

Assistance Publique - Hôpitaux de Paris · NCT03538210

This study is trying to understand how bariatric surgery affects severely obese patients by collecting samples from their bodies to find better ways to manage obesity.

Quick facts

Study typeObservational
Enrollment420 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorAssistance Publique - Hôpitaux de Paris (other)
Locations1 site (Colombes, Ile De France)
Trial IDNCT03538210 on ClinicalTrials.gov

What this trial studies

This observational cohort study aims to collect and preserve biological samples from severely obese patients undergoing bariatric surgery at the University Hospital. The study focuses on understanding the physiological and pathological consequences of obesity and the effects of bariatric procedures on the gastrointestinal tract. By analyzing samples such as blood, stomach, liver, intestine, and adipose tissue, researchers hope to identify new markers for treatment responses and improve obesity management strategies. The study addresses the need for better therapeutic alternatives to bariatric surgery, which, despite its efficacy, carries risks and complications.

Who should consider this trial

Good fit: Ideal candidates are severely obese individuals with a BMI over 35 kg/m2 who are 18 years or older and are candidates for bariatric surgery.

Not a fit: Patients with psychiatric disorders, organ failure, or chronic life-threatening illnesses may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment options and better management of severe obesity and its complications.

How similar studies have performed: Other studies have shown success in understanding obesity and bariatric surgery outcomes, but this cohort approach may provide novel insights.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* severe obese subject with BMI above35 kg/m2, age above 18 ans who accept to participate
* candidate for bariatric surgery according to HAS criteria
* who will undergo either sleeve gastrectomy or gastric bypass
* or who undergoesa revisional surgery for a complication of bariatric surgery
* or who undergoes arevisional sugery fir insufficient weight loss
* covered by an health insurance

Exclusion Criteria:

* psychiatric disease or undertanding disorder
* alchool abuse or other addiction
* organ failure (including liver, heart or kidney)
* chronic life-threatening illness
* inflamatory disease or immunosuppressive treatment

Where this trial is running

Colombes, Ile De France

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Severe Obesity, Bariatric Surgery, Surgical Failure, obesity, bariatric surgery, gastrointestinal functions, adipose tissu, steatohepatitis

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.