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Clinical Trial Summary

The benefit of weight loss in patients with obesity and heart failure with reduced ejection fraction (HFrEF) is controversial. Semaglutide has shown cardiovascular (CV) risk-reduction and impact on CV risk factors including overweight, dysglycaemia and hypertension in subjects with type 2 diabetes (T2D). The STEP-HFpEF (Semaglutide Treatment Effect in People With Obesity and HFpEF) recently demonstrated, at 1-year, to not only reduce weight considerably, but also significantly improve health-related quality of life, functional status scores and 6-min walk distance in patients with heart failure with preserved ejection fraction (HFpEF). Also, the recently concluded SELECT trial was the first CV outcome trial with semaglutide in patients with overweight or obesity and established CV disease, including heart failure (but no T2D). Semaglutide demonstrated a 20% reduction in MACE, defined as the composite of cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke. These landmark findings have important implications for clinicians -as they mean that weight loss and/or semaglutide as anti-obesity pharmacotherapy could be a treatment strategy for secondary prevention of CV disease in patients with overweight or obesity. It is, however, unknown whether weight loss with either calorie-restricted diet or semaglutide has beneficial effects in obese subjects with heart failure and reduced ejection fraction. Also it is unclear whether semaglutide has cardiovascular benefits irrespective of starting weight and amount of weight loss. Purpose: The study aims to investigate whether weight loss treatment with semaglutide is superior to weight loss with calorie-restricted diet in improving peak oxygen uptake in patients with obesity and heart failure with reduced ejection fraction.


Clinical Trial Description

Background: The prevalence of overweight and obesity has reached pandemic proportions. Obesity is known to increase the risk for Type 2 diabetes and hypertension, as well as the risk for overt cardiovascular (CV) disease, including myocardial infarction, heart failure, and stroke. The rising prevalence of obesity may counteract the recent advances in primary and secondary prevention of CV disease. Overweight and obesity are common in patients with CV disease; however, cardiologists face several challenges in managing body weight in this population. Many may not consider obesity as a therapeutic target probably because there were no previous highly effective and safe pharmacologic interventions to consider. In addition, they may not have the expertise or resources to implement lifestyle interventions and may have limited familiarity with obesity pharmacotherapy. Moreover, the long-term CV effects of obesity pharmacotherapy remain uncertain due to limited CV outcome data with weight loss as the primary intervention. Although current CV guidelines recognize the importance of weight loss, they primarily focus on lifestyle modifications, with fewer details on strategies to utilize obesity pharmacotherapy and surgery. However, the recent 2022 American Diabetes Association/European Association for the Study of Diabetes consensus on the management of Type 2 diabetes has moved up weight management to the front of the treatment algorithm, by prioritizing the use of pharmacologic interventions such as glucagon-like peptide-1 receptor agonists and dual glucose-dependent insulinotropic polypeptide/glucagon-like peptide-1 receptor agonists, which have potent weight-lowering effects, in addition to glucose-lowering effects. Hypothesis: The investigators hypothesise that weight loss treatment with semaglutide is superior to weight loss with state-of-the-art calorie-restricted diet in improving the peak oxygen uptake (ml/min/kg) after 52 weeks as a marker of physical performance (and with prognostic implications) in patients with obesity and heart failure with reduced ejection fraction. Design: This is a investigator-initiated, parallel-group, 2-arm assessor-blinded, open-label, randomised, controlled trial (RCT) comparing the effect of weight loss using low-calorie replacement diet to weight loss using semaglutide in obese patients with heart failure with reduced ejection fraction. Subjects will be randomised in a 1:1 ratio to receive either low-calorie replacement diet or semaglutide.The subjects wil be followed for 52 weeks during the intervention period. The patients will be examined at 16 weeks (where the weight loss is anticipated to be approximately equal in the two groups) and after 52 weeks. Primary, secondary and exploratory objectives are listed below. The exploratory objectives are mostly embedded mechanistic studies of an exploratory nature and therefore hypothesis-generating in the RCT. Intervention: Subjects will be treated with semaglutide once weekly or a weight loss intervention consisting of a calorie-restricted diet and dietary advice on top of standard of care, which covers management of heart failure medication, CV risk factors and healthy lifestyle counselling. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06423599
Study type Interventional
Source Hvidovre University Hospital
Contact Jens D Hove, MD, PhD
Phone +4538623218
Email jens.dahlgaard.hove@regionh.dk
Status Recruiting
Phase Phase 2/Phase 3
Start date May 17, 2024
Completion date December 30, 2026

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