Comparing robotic and laparoscopic approaches for bariatric surgery costs and outcomes
Official title: Health Economic Impact of Robot-assisted Bariatric Surgery vs Conventional Laparoscopy: Prospective Multicenter Randomized Controlled Trial
Run by Hospices Civils de Lyon · NCT06858761 · Data updated 2026-11-12
This project will test whether robot-assisted bariatric surgery gives adults eligible for primary or revision bariatric procedures better quality-of-life outcomes that justify its higher cost.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 70 Years |
| Sex | All |
| Enrollment | 482 (estimated) |
| Sponsor | Hospices Civils de Lyon Academic / other |
| Locations | 18 sites (Bordeaux and 17 other locations) |
| Status | Recruiting |
| Started | July 25, 2025 |
| Main results expected | July 2028 |
| Study ends | July 2028 |
| Registry record updated | July 31, 2026 |
| Trial ID | NCT06858761 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–70 who meet French HAS BMI and comorbidity criteria for primary bariatric surgery or who require revision surgery, and who have a favorable multidisciplinary evaluation, are eligible.
✕Probably not a fit
People who do not meet the BMI/comorbidity criteria, have contraindications to bariatric surgery, or are not candidates for either robotic or laparoscopic approaches are unlikely to benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This interventional health-economic project compares robot-assisted versus conventional laparoscopic bariatric surgery in adults meeting French guideline criteria for primary or revision operations. Investigators will collect clinical outcomes, complication rates, patient-reported health status (EQ-5D-5L, IWQOL, visual analog scales) and resource use to calculate cost per quality-adjusted life-year (QALY) gained. The analysis will combine clinical follow-up and economic data to derive a cost-effectiveness ratio for the Da Vinci robotic platform. The work is conducted across multiple French academic surgical centers.
Why it matters
Potential benefit: If successful, the study could show whether the robotic approach delivers enough additional quality-adjusted life years to justify its higher costs, informing surgical practice and funding decisions.
How similar studies have gone: Robotic platforms have shown clear advantages in some procedures like prostatectomy and rectal surgery, but evidence in bariatric surgery is mixed with limited data suggesting benefit mainly for complex or selected cases.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria:
* Patient aged between 18 and 70 years old,
* Female or male patients
* Patient eligible for one of the two situations defined below:
1. Primary bariatric or metabolic surgery, with a BMI corresponding to one of the 3 following situations, in accordance with the french National Authority for Health (HAS) recommendations published in February 2024:
* 40 kg/m² OR
* 35 kg/m² with at least one comorbidity that may improve after surgery (e.g.: high blood pressure, sleep apnea syndrome and other severe respiratory disorders, type 2 diabetes, disabling osteoarticular diseases, steatohepatitis not alcoholic, dyslipidemia, osteoarthritis) OR between 30 and 35 kg/m² with uncontrolled type 2 diabetes
2. Revision surgery for complication and/or side effects of a previous bariatric surgery
* Patient who has benefited from a pluridisciplinary evaluation (medical, surgical, psychiatric), with a favorable opinion for a bariatric.
* Patient who agrees to be included in the study and who signs the informed consent form,
Exclusion Criteria:
* Presence of a severe and evolutive life threatening pathology, unrelated to obesity,
* Pregnancy or desire to be pregnant during the study,
* Patient not affiliated to a French or European healthcare insurance,
* Patient under supervision or guardianship
* Patient who is unable to give consent,
* Patient who does not understand French
* Patient who has already been included in a trial which has a conflict of interests with the present study
Where it's running
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Département de chirurgie digestive et endocrinienne Groupe Hospitalier Pellegrin Place Amélie Raba Léon 33076 BORDEAUX
Bordeaux, France Recruiting -
Département de chirurgie digestive CHRU Dijon - Hôpital Le Bocage Bd du Maréchal de Lattre de Tassigny 21000 DIJON
Dijon, France Recruiting -
Digestive Surgery Department CHU Grenoble BP217 - 38043 GRENOBLE Cedex 09
Grenoble, France Recruiting -
Service de Chirurgie Générale et Digestive Grand Hopital de l'Est Francilien Site de Marne La Vallée 2-4 Cours de la Gondoire 77600 JOSSIGNY
Jossigny, France Recruiting -
Service de Chirurgie Générale et Endocrinienne CHU de Lille - Hôpital Claude Huriez 1 rue Michel Polonovski 59000 LILLE
Lille, France Recruiting -
Hospices Civils de Lyon - Hôpital Edouard Herriot Chirurgie Digestive et Bariatrique 5 Place d'Arsonval - 69437 Lyon Cedex 03 - FRANCE
Lyon, France Recruiting
Show 12 more locations
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Service de Chirurgie Digestive, Hôpital Européen de Marseille, 6 rue Désirée Clary, 13003 MARSEILLE
Marseille, France Recruiting -
Département de chirurgie digestive et bariatrique CHU de Nantes - Site Hôtel-Dieu - HME 1 Place Alexis Ricordeau 44000 NANTES
Nantes, France Recruiting -
Département de Chirurgie digestive Hôpital de la Source CHU d'ORLEANS 14 Avenue de l'hôpital 45100 ORLEANS LA SOURCE
Orléans, France Recruiting -
Service de Chirurgie Digestive Hépato-bilio-pancréatique et Transplantation Hépatique Chirurgie Bariatrique, coelioscopique et robotique AP-HP - Hôpital Universitaire La Pitié Salpêtrière 47-83 boulevard de l'hôpital 75013 PARIS
Paris, France Recruiting -
Département de chirurgie digestive, oncologique et bariatrique AP-HP - Hôpital Européen Georges Pompidou 20 rue Leblanc 75015 PARIS
Paris, France Recruiting -
Département de chirurgie digestive, œsogastrique et bariatrique AP-HP - Hôpital Bichat - Claude-Bernard 46 Rue Henri Huchard 75018 PARIS
Paris, France Recruiting -
Département de chirurgie viscérale CHU de Poitiers 2 Rue de la Miletrie - CS 90577 - 86000 POITIERS
Poitiers, France Recruiting -
Clinique Chirurgicale Mutualiste 3 rue le verrier - BP 209 42100 SAINT ETIENNE
Saint-Etienne, France Recruiting -
Département de chirurgie digestive et endocrinienne CHU de Strasbourg - Nouvel Hôpital civil Rez-de-chaussée 1 place de l'hôpital BP 426 67091 STRASBOURG cedex
Strasbourg, France Recruiting -
Service de Chirurgie Digestive Hôpital Rangueil - CHU de Toulouse 1 avenue du Pr Jean Poulhès - TSA 50032 31059 TOULOUSE Cedex 9
Toulouse, France Recruiting -
Département de Chirurgie Viscérale Métabolique et Cancérologique Responsable de l'Unité de Chirurgie Endocrinienne Université de Lorraine CHRU de Nancy - Hôpital Brabois adultes 11 allée du Morvan 54511 VANDOEUVRE LES NANCY
Vandœuvre-lès-Nancy, France Recruiting -
Service de Chirurgie Digestive et Transplantation Hépatique, Hôpital de l'Archet 2, CHU de Nice
Nice, France Not yet recruiting
Study contacts
- Study coordinator: Maud ROBERT, MD, PHD
- Email: maud.robert@chu-lyon.fr
- Phone: +33 4 72 11 62 63
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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.