A Two-year Prospective, Observational Study of Wegovy in Real-world Clinical Practice
PILLAR
2 other identifiers
observational
1,250
3 countries
30
Brief Summary
This observational study will explore how Wegovy® (Semaglutide) is used in everyday situations, how it might affect things like weight, body mass index (BMI) and waist circumference, and what kind of impact it could have on overall quality of life. The overall purpose of this study is to understand how Wegovy impacts weight when used as part of regular medical care. Participants will be treated with Wegovy as prescribed to the participant by their doctor, in accordance with normal clinical practice. The study will last for about two years.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started May 2025
Typical duration for all trials
30 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
May 1, 2025
CompletedFirst Submitted
Initial submission to the registry
June 13, 2025
CompletedFirst Posted
Study publicly available on registry
July 9, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 15, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 15, 2028
May 14, 2026
May 1, 2026
3.3 years
June 13, 2025
May 13, 2026
Conditions
Outcome Measures
Primary Outcomes (2)
Absolute change in body weight (kilograms [kg])
Measured in kg.
From baseline (0 months) to the end of observation (24 months)
Percentage change in body weight (percentage [%])
Measured in %.
From baseline (0 months) to the end of observation (24 months)
Secondary Outcomes (45)
Absolute change in waist circumference (centimeters [cm])
From baseline (0 months) to the end of observation (24 months)
Absolute change in waist-to-height ratio
From baseline (0 months) to the end of observation (24 months)
Percentage change in waist circumference (%)
From baseline (0 months) to the end of observation (24 months)
Number of participants who achieve greater than or equal to (>=) 5 percent body weight reduction (Yes/No)
From baseline (0 months) to the end of observation (24 months)
For Switzerland: Number of participants who achieve >=7 percent body weight reduction (Yes/No)
From baseline (0 months) to the end of observation (22 months)
- +40 more secondary outcomes
Study Arms (1)
Wegovy®
Participants will be treated with Wegovy according to the local labels in Spain, Switzerland and the United Kingdom (UK).
Interventions
Participants will be treated with commercially available Wegovy according to routine clinical practice and is purely at the discretion of the treating physician. Only individuals receiving Wegovy reimbursed by the healthcare system in their respective countries are included in the study.
Eligibility Criteria
Participants will be treated with Wegovy according to the local labels in Spain, Switzerland and the United Kingdom (UK).
You may qualify if:
- Signed consent obtained before any study-related activities (study-related activities are any pro-cedure related to recording of data according to the protocol).
- Are eligible for Wegovy and are due to initiate treatment for the first time within the study period; the decision to initiate treatment with commercially available Wegovy has been made by the patient/Legally Acceptable Representative (LAR) and the treating physician before and independently from the decision to include the patient in this study.
- Male or female, age above or equal to 18 years at time of signing informed consent.
- Have at least one reported weight measurement documented at baseline or within 28 days prior to baseline.
- Participants must be able to complete the electronic patient reported outcome (ePRO) questionnaires on a compatible electronic device with internet access.
- Fulfil the respective reimbursement criteria in the visit prior to / at baseline in Switzerland and United Kingdom (UK).
You may not qualify if:
- Previous participation in this study. Participation is defined as having given informed consent in this study.
- Presence of a documented refusal or unwillingness to participate in research.
- Previous treatment with other obesity management pharmacotherapy or any glucagon like pep-tide-1 (GLP- 1) receptor agonist up to 90 days prior to baseline in Switzerland and UK.
- Previous treatment with other obesity management pharmacotherapy or any GLP- 1 receptor agonist up to 30 days prior to baseline in Spain.
- Pregnant or women of childbearing potential and not using a highly effective contraceptive method.
- Mental incapacity, unwillingness or language barriers precluding adequate understanding or cooperation with the study requirements.
- Individuals who have reported plans to move out in the next 12 months to an area not serviced by their current site.
- Personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2) in Spain and UK.
- Participant has had a prior serious allergic reaction to semaglutide or any of the ingredients in Wegovy.
- Have had Saxenda reimbursed by basic mandatory health insurance for a cumulative period of more than 12 months prior to baseline in Switzerland.
- Documented history of diabetes mellitus type 1 and type 2 in Spain.
- Presence of diabetic complications and/or at risk of hypoglycaemia (with a documented history of frequent hypoglycaemia) in Spain.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Novo Nordisk A/Slead
Study Sites (30)
CAP Sarrià
Barcelona, 08017, Spain
CAP Sants
Barcelona, 08028, Spain
Hospital Vall d'Hebron
Barcelona, 08035, Spain
Centro de Salud Cartagena Casco Antiguo
Cartagena, 30201, Spain
Hospital Vithas Sevilla
Castilleja de la Cuesta, 41950, Spain
Hospital Univ. Virgen de la Arrixaca
El Palmar (Murcia), 30120, Spain
Clínica de Endocrinología y Nutrición Dr. Bellido
Ferrol, 15401, Spain
Ginegetafe S.L.
Getafe (Madrid), 28901, Spain
Centro de Salud La Cuesta
La Cuesta (Santa Cruz de Tenerife), 38320, Spain
Hospital Univ. de Gran Canaria Doctor Negrín
Las Palmas de Gran Canaria, 35010, Spain
Hospital Universitario Sanitas Virgen del Mar
Madrid, 28016, Spain
Hospital Quirónsalud Málaga
Málaga, 29004, Spain
Hospital Univ. Central de Asturias
Oviedo, 33011, Spain
Hospital Son Espases
Palma de Mallorca, 07120, Spain
Hospiten Roca_Ginecología
San Bartolomé de Tirajana (Las Palmas), 35100, Spain
Praxis Dr. Schäfer, Bern
Bern, 3013, Switzerland
Hôpitaux Universitaires de Genève HUG
Geneva, 1211, Switzerland
Luzerner Kantonsspital
Lucerne, 6004, Switzerland
Clinica Moncucco
Lugano, 6900, Switzerland
Centre médical de l'obésité et du diabète
Neuchâtel, 2000, Switzerland
Kantonsspital Olten
Olten, 4600, Switzerland
Praxis Prof. Dr. med. G. Rudofsky
Olten, 4600, Switzerland
Stoffwechselzentrum St. Gallen
Sankt Gallen, 9016, Switzerland
Universitätsspital Zürich
Zurich, 8091, Switzerland
Sandwell Health Campus
West Bromwich, West Midlands, B71 4HJ, United Kingdom
Barnsley Hospital
Barnsley, S75 2EP, United Kingdom
Hull Royal Infirmary
Hull, HU3 2JZ, United Kingdom
St Thomas' Hospital - Diabetes
London, SE1 7EH, United Kingdom
Luton and Dunstable University Hospital
Luton, LU4 0DZ, United Kingdom
St George's Hospital
Tooting, SW17 0RE, United Kingdom
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Clinical Transparency (dept. 2834)
Novo Nordisk A/S
Study Design
- Study Type
- observational
- Observational Model
- CASE ONLY
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 13, 2025
First Posted
July 9, 2025
Study Start
May 1, 2025
Primary Completion (Estimated)
August 15, 2028
Study Completion (Estimated)
August 15, 2028
Last Updated
May 14, 2026
Record last verified: 2026-05
Data Sharing
- IPD Sharing
- Will share
According to the Novo Nordisk disclosure commitment on novonordisk-trials.com.