Battle of the bariatric surgeries: which one wins for severe obesity?

NCT ID NCT04915014

Ongoing Disease control Sponsor: University Hospital, Lille Source: ClinicalTrials.gov ↗

First seen Feb 15, 2026 · Last updated May 22, 2026 · Updated 14 times

Summary

This study compares two weight-loss surgeries—sleeve gastrectomy with transit bipartition and Roux-en-Y gastric bypass—in 320 adults with severe obesity. The goal is to see which surgery leads to more weight loss and fewer complications over two years. Participants must have a BMI of 40 or higher, or 35 with related health problems, and have already tried other weight-loss methods.

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Contacts and locations

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Locations

AP-HP Hôpital Bichat

Paris, France
AP-HP Hôpital Georges Pompidou

Paris, France
CHU Orléans

Orléans, France
CHU de Lyon

Lyon, France
CHU de Nancy

Vandœuvre-lès-Nancy, France
CHU de Nantes

Nantes, France
CHU de Poitiers

Poitiers, France
Hop Claude Huriez Chu Lille

Lille, 59037, France

Conditions

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SEVERE OBESITY