Clinical trial Recruiting at 1 site Interventional Ages 18 to 60

Comparing two surgical methods for treating severe obesity

Official title: Randomized Clinical Trial Comparing Two Surgical Techniques for the Treatment of Type III Obesity (BMI 40-50 kg/m2): Single Anastomosis Duodeno-ileal Bypass With Sleeve Gastrectomy (SADI-S) and Roux-en-Y Gastric Bypass (RY-GBP)

Run by Hospital Clinic of Barcelona · NCT06789965 · Data updated 2026-11-12

This study is testing two different weight loss surgeries for people with severe obesity to see which one helps them lose weight better and causes fewer problems afterward.

Quick facts

Study typeInterventional
Ages18 Years to 60 Years
SexAll
Enrollment450 (estimated)
SponsorHospital Clinic of Barcelona
Academic / other
Locations1 site (Barcelona, Barcelona)
StatusRecruiting
StartedFebruary 1, 2025
Main results expectedAugust 1, 2026
Study endsAugust 1, 2030
Registry record updatedMay 4, 2025
Trial IDNCT06789965 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 to 60 with a BMI between 40 and 50 kg/m2 who are suitable for mixed bariatric surgery.

Probably not a fit

Patients outside the age range of 18 to 60 or with a BMI below 40 kg/m2 or above 50 kg/m2 will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study compares two surgical techniques for treating Type III obesity, specifically Single Anastomosis Duodenoileal Bypass with Sleeve Gastrectomy (SADI-S) and Roux-en-Y Gastric Bypass (RY-GBP). Both methods aim to reduce stomach size and limit calorie absorption, but their effectiveness in postoperative weight control and complications will be analyzed. The study is crucial as obesity is a growing epidemic, and understanding the best surgical approach could significantly impact patient outcomes. Participants will be monitored for weight loss and any gastroesophageal issues following the procedures.

Why it matters

Potential benefit: If successful, this study could identify the more effective surgical technique for weight loss and improved health outcomes in patients with severe obesity.

How similar studies have gone: While both surgical techniques have been used in practice, there is limited comparative data on their effectiveness, making this study a novel approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* BMI 40 - 50 Kg/m2
* Candidates to mixed bariatric surgery

Exclusion Criteria:

* \< 18 years.
* \> 60 years.
* BMI \< 40 Kg/m2
* BMI \> 50 Kg/m2.
* Non-candidates to mixed bariatric surgery.

Where it's running

  • Hospital Clinic Barcelona
    Barcelona, Barcelona, Spain
    Recruiting

Study contacts

  • Principal investigator: Javier Osorio, PhD — General & Digestive Surgery Department, ICMDM, Clinic Barcelona
  • Study coordinator: Javier Osorio, PhD
  • Email: josorio@clinic.cat
  • Phone: +34932275400

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.