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Life sciences · Interventional Study
ClinicalTrials.gov · September 14, 2026
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Interventional Study.
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Registry record from ClinicalTrials.gov (NCT07816744). This is a study registration, not published results. Lead sponsor: Axel Brandes. Recruitment status: NOT_YET_RECRUITING. Phase: NA. Study type: INTERVENTIONAL. Enrollment: 480 participants (ESTIMATED). Conditions: Atrial Fibrillation (AF), Obesity & Overweight. Interventions: OTHER: Structured weight loss program including behavioral support and optional meal re-placement or pharmacotherapy with Glucagon-like peptide-1 receptor agonists (GLP1-RA); OTHER: Standard Care (in control arm). Primary outcome measures: Hierarchical composite outcome capturing AF progression and AF burden, inte-grating clinical events assessed by blinded adjudication and objective measures of AF burden, assessed by 14-day continuous ECG monitoring , From 4 months to 12 months after enrollment. Brief summary: Obesity is an important risk factor for the development and progression of atrial fibrillation. Sustainable weight loss likely reduces the burden of atrial fibrillation, which has yet to be proven in adequately sized randomised trials. In a national, multicentre randomised trial we will test, whether a sustainable weight loss of more than 10% reduces atrial fibrillation progression and burden in patients with symptomatic paroxysmal or early persistent atrial fibrillation and a body mass index ≥27 kg/m2. A total of 480 patients will be randomised in a 1:1 fashion to either a comprehensive weight loss programme of behavioural support, meal replacement and/or pharmacotherapy with a glucagon-like peptide-1 receptor agonist on top of standard care aiming at more than 10% weight loss or standard care alone. Standard care will include guideline-directed anticoagulant therapy for stroke prevention, rate and/or rhythm control treatment, and management of risk factors and underlying cardiovascular conditions. Patients in the standard care group will receive information on weight management, but no active treatment for weight loss. Patients will be enrolled during a period of two and a half years and will be followed for one year with an equal number of study visits in both study arms. All patients will receive a 14-day continuous electrocardiographic monitoring at baseline, four, eight, and 12 months. The study endpoints will be assessed after a 4-months blanking period from month four to 12 to allow for weight loss. The primary endpoint will be a hierarchical composite of atrial fibrillation progression, symptom burden, and treatment escalation. Secondary endpoints will be a change in weight, total atrial fibrillation burden, quality of life, and metabolic and cardiovascular biomarkers from baseline to 12 months. Safety endpoints will be adverse events related to treatment with glucagon-like peptide-1 receptor agonists and weight loss. Endpoint adjudication will be blinded.