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NCT05897398Completed

SEMASEARCH, Retrospective/Prospective Cohort Nested at ATUc/AP2 WEGOVY®

Source: ClinicalTrials.gov · Last updated 2 Sept 2025

Brief summary (registry, in English)

The aim of the SEMASEARCH project is therefore to constitute a retrospective cohort, from the available data on patients already included in the ATUc/AP2, and prospective, on new patients who will initiate treatment according to the AP2 PUT, of 15 Specialized Obesity Centers in order to describe the effect of WEGOVY® treatment in this population. Thanks to a high phenotyping, subpopulations of interest will be identified to know the specifics of the effect of the treatment in these subgroups of interest. Secondary analyses will aim to look for clinical or biological biomarkers of success in the weight response to WEGOVY® in the entire prospective cohort, but also in specific subpopulations. In summary, the analysis of the entire SEMASEARCH cohort and sub-populations of interest will be based on a complete clinical phenotyping of patients (included in retrospective and prospective studies), completed by ad hoc questionnaires and associated with biological markers (prospective) partly collected within the framework of the WEGOVY® AP (glycaemia, hepatic assessment, lipid assessment ) and partly from a biobank to test specific hypotheses (predictive role of leptin sensitivity, insulin sensitivity level, plasma level of endocannabinoids, etc.). In addition, approaches using artificial intelligence (AI), notably machine learning, will make it possible to determine the variables or combination of variables that are most predictive of the weight response to treatment with WEGOVY® in the largest population. Indeed, individual weight loss in response to weight loss strategies is highly variable, whether purely related to lifestyle changes or pharmacological. Well-known factors associated with the ability to lose weight include adherence to lifestyle change, gender, age and specific medications. However, after controlling for these factors, differences in weight loss appear to persist in response to different interventions including pharmacological ones. Adaptation to energy deficit involves complex feedback mechanisms, and inter-individual differences are likely to arise from a range of poorly defined factors. Thus, a better understanding of the factors involved in inter-individual variability in response to WEGOVY® will help guide more personalised approaches to the management of these patients. AI techniques will be used to determine which combination of clinical or biological variables are most predictive of weight response.

Status (registry)
Completed
Study type
Observational
Enrollment
1100 (actual)
First submitted
31 May 2023
Start date
10 Jun 2024
Primary completion date
10 Jun 2025
Lead sponsor
Hospices Civils de Lyon
Diseases
Obesity
NCT number
NCT05897398

What you commit to

  • Study type: Observational
  • Participants enrolled: 1100
  • From 10 Jun 2024 to the primary completion date, 10 Jun 2025
  • 14 sites in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Criteria the registry did not label

  • 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:
    • At least 1 year post-bariatric surgery (definitive technique or gastric band still in place)
    • 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:
    • 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
    • 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
    • Marked distress regarding binge eating
    • The binge eating occurs, on average, at least once a week for 5 months
    • 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
    • Includes:
    • Hypothalamic (lesional) obesity, such as craniopharyngioma Genetic forms of obesity
    • 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:
    • <!-- -->
    • Age \> 60 years
    • 5 Patients with extreme obesity:
    • BMI ≥ 60 kg/m²
    • \*6 Patients with obesity under psychotropic treatment:
    • Presence of one or more of the following treatments at baseline:
  • Antidepressants: Agomelatine, Amitriptyline, Citalopram, Clomipramine, Duloxetine, Escitalopram, Fluoxetine, Fluvoxamine, Imipramine, Iproniazid, Mianserin, Milnacipran, Mirtazapine, Moclobemide, Paroxetine, Sertraline, Tianeptine, Venlafaxine, Vortioxetine
  • Antipsychotics: Amisulpride, Aripiprazole, Chlorpromazine, Clozapine, Cyamemazine, Flupenthixol, Fluphenazine, Haloperidol, Levomepromazine, Loxapine, Olanzapine, Pimozide, Pipamperone, Prochlorperazine, Quetiapine, Risperidone/Paliperidone, Sulpiride, Tiapride, Zuclopenthixol
  • Mood stabilizers: Lithium carbonate, Carbamazepine, Lamotrigine, Oxcarbazepine, Sodium divalproate, Valpromide
  • Psychostimulants: Methylphenidate
  • 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

Age in the registry: 18 years to 99 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (14)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Service Endocrinologie Diabétologie Nutrition APHP - Hôpital Jean Verdier
Coordinator of this site? Confirm its status
BondyFranceUnknown status
Service de chirurgie APHP - GHU Nord Hôpital Louis Mourier
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ColombesFranceUnknown status
Service Endocrinologie Diabétologie Maladies Métaboliques CHU François Mitterrand Dijon
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DijonFranceUnknown status
Espace Médical Nutrition & Obésité (EMNO) Maison Médicale Valmy
Coordinator of this site? Confirm its status
DijonFranceUnknown status
Service Endocrinologie Diabétologie CHU de Grenoble
Coordinator of this site? Confirm its status
La TroncheFranceUnknown status
Service Endocrinologie Hôpital Conception - APHM
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MarseilleFranceUnknown status
Service Endocrinologie Diabétologie Nutrition Hôpital Lapeyronie - CHU Montpellier
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MontpellierFranceUnknown status
Service Endocrinologie Diabétologie Nutrition CHU de Nantes - Hôpital Guillaume & René Laennec
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NantesFranceUnknown status
Service Nutrition APHP - GHU Pitié Salpêtrière
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ParisFranceUnknown status
Service Nutrition Diabétologie Endocrinologie APHP - Hôpital Européen Georges-Pompidou (HEGP)
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ParisFranceUnknown status
Service Endocrinologie Hôpital Haut Léveque - CHU Bordeaux
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PessacFranceUnknown status
Service Endocrinologie Diabétologie Nutrition CHU Poitiers
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PoitiersFranceUnknown status
Service Endocrinologie, Maladies Métaboliques et Nutrition Hôpital Rangueil (CHU Toulouse)
Coordinator of this site? Confirm its status
ToulouseFranceUnknown status
Service Endocrinologie Diabète Nutrition Hôpitaux de Brabois - CHU Nancy
Coordinator of this site? Confirm its status
Vandœuvre-lès-NancyFranceUnknown status

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This page is information, not medical advice. Discuss any trial with your doctor.