WEGOVY weight loss study aims to predict who benefits most
NCT ID NCT05897398
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study followed 1100 adults with severe obesity who took WEGOVY (semaglutide) for 12 months. Researchers collected data on weight, eating habits, and blood markers to see how the drug worked in different groups. The goal is to use this information, along with artificial intelligence, to identify which patients are most likely to lose significant weight. This is an observational study, so it looks at real-world outcomes rather than testing a new treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- WEGOVY (semaglutide)
- What this could lead to
- If successful, this study could help doctors predict which patients with severe obesity will lose the most weight with WEGOVY, leading to more personalized treatment.
- What could go wrong
- This is an observational study, not a controlled trial, so results may not prove cause and effect. Weight loss varies widely, and the findings may not apply to all obesity types.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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1,100 people
The number who actually took part.
- Started
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Jun 2024
- Finished
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Jun 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
All patients included in the 15 centers in the indication of AP2 : Adults with an initial body mass index ≥ 40 kg/m2 (class III obesity or morbid obesity) in the presence of at least one treated comorbidity (treated hypertension, treated dyslipidemia, treated OSAS, established CVD) and included in the ATUc/AP2 WEGOVY®.
- Ages
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18 to 99 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
* Inclusion Criteria Male or female Aged over 18 years Patient included in the WEGOVY® ATU/AP program in one of the 14 participating CSOs: initial Body Mass Index (BMI) ≥ 40 kg/m² (Class III or morbid obesity) and presence of at least one weight-related comorbidity: treated hypertension, treated dyslipidemia, established cardiovascular disease, treated sleep apnea syndrome; and in the absence of therapeutic alternatives Patient has been informed and has not objected to participation in the study Patient affiliated with a French social security scheme * Tagging Criteria to Identify Subpopulations of Interest (for classification purposes only - not a condition for inclusion) \*1 Patients with a history of bariatric surgery: 1. At least 1 year post-bariatric surgery (definitive technique or gastric band still in place) 2. Defined as failure if: Initial %EWL \< 50% (even without weight regain) and/or weight regain \> 20% of lost weight compared to postoperative nadir \*2 Patients with Binge Eating Disorder (BED): Defined by the clinician according to DSM-5 criteria for BED: a. Recurrent episodes of binge eating, characterized by both: Eating, in a discrete period of time, an amount of food that is definitely larger than what most individuals would eat in a similar time under similar circumstances A sense of lack of control over eating during the episode b. The binge eating episodes are associated with three (or more) of the following: Eating much more rapidly than normal Eating until uncomfortably full Eating large amounts of food when not physically hungry Eating alone due to embarrassment Feeling disgusted with oneself, depressed or guilty afterward c. Marked distress regarding binge eating d. The binge eating occurs, on average, at least once a week for 5 months e. The behavior is not associated with regular inappropriate compensatory behavior (e.g., purging, fasting, excessive exercise) and does not occur exclusively during anorexia nervosa or bulimia nervosa \*3 Patients with rare monogenic or syndromic obesity: According to the French national guidelines (PNDS) for rare obesity causes: HAS website 1. Includes: Hypothalamic (lesional) obesity, such as craniopharyngioma Genetic forms of obesity 2. Most frequently encountered syndromes: Prader-Willi syndrome Bardet-Biedl syndrome 16p11.2 deletion or SH2B1 variant LEPR, POMC, PCSK1, and MC4R variants * 4 Older patients: <!-- --> 1. Age \> 60 years * 5 Patients with extreme obesity: a. BMI ≥ 60 kg/m² \*6 Patients with obesity under psychotropic treatment: Presence of one or more of the following treatments at baseline: i. Antidepressants: Agomelatine, Amitriptyline, Citalopram, Clomipramine, Duloxetine, Escitalopram, Fluoxetine, Fluvoxamine, Imipramine, Iproniazid, Mianserin, Milnacipran, Mirtazapine, Moclobemide, Paroxetine, Sertraline, Tianeptine, Venlafaxine, Vortioxetine ii. Antipsychotics: Amisulpride, Aripiprazole, Chlorpromazine, Clozapine, Cyamemazine, Flupenthixol, Fluphenazine, Haloperidol, Levomepromazine, Loxapine, Olanzapine, Pimozide, Pipamperone, Prochlorperazine, Quetiapine, Risperidone/Paliperidone, Sulpiride, Tiapride, Zuclopenthixol iii. Mood stabilizers: Lithium carbonate, Carbamazepine, Lamotrigine, Oxcarbazepine, Sodium divalproate, Valpromide iv. Psychostimulants: Methylphenidate v. Anxiolytics: Antihistamines, anticonvulsants, or other anxiolytic agents \*7 Non-specific patients: Patients not meeting any of the above subpopulation criteria \- Exclusion Criteria Pregnant or breastfeeding women Persons under legal protection or guardianship \- Criteria for Early Study Withdrawal Early withdrawal from the study will occur in the following cases: The patient withdraws their non-opposition to participation The patient discontinues treatment with WEGOVY® prematurely
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Espace Médical Nutrition & Obésité (EMNO) Maison Médicale Valmy
Dijon, 21000, France
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Service Endocrinologie Diabète Nutrition Hôpitaux de Brabois - CHU Nancy
Vandœuvre-lès-Nancy, 54500, France
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Service Endocrinologie Diabétologie CHU de Grenoble
La Tronche, 38250, France
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Service Endocrinologie Diabétologie Maladies Métaboliques CHU François Mitterrand Dijon
Dijon, 21079, France
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Service Endocrinologie Diabétologie Nutrition APHP - Hôpital Jean Verdier
Bondy, 93140, France
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Service Endocrinologie Diabétologie Nutrition CHU Poitiers
Poitiers, 86021, France
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Service Endocrinologie Diabétologie Nutrition CHU de Nantes - Hôpital Guillaume & René Laennec
Nantes, 44093, France
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Service Endocrinologie Diabétologie Nutrition Hôpital Lapeyronie - CHU Montpellier
Montpellier, 34295, France
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Service Endocrinologie Hôpital Conception - APHM
Marseille, 13385, France
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Service Endocrinologie Hôpital Haut Léveque - CHU Bordeaux
Pessac, 33604, France
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Service Endocrinologie, Maladies Métaboliques et Nutrition Hôpital Rangueil (CHU Toulouse)
Toulouse, 31059, France
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Service Nutrition APHP - GHU Pitié Salpêtrière
Paris, 75013, France
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Service Nutrition Diabétologie Endocrinologie APHP - Hôpital Européen Georges-Pompidou (HEGP)
Paris, 75015, France
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Service de chirurgie APHP - GHU Nord Hôpital Louis Mourier
Colombes, 92700, France
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