The Effect of Obesity and Weight Loss in Heart Failure With Preserved Ejection Fraction
OWL-HFPEF
The Effects of Obesity and Weight Loss in Heart Failure: Imaging the Obesity Paradox Using Magnetic Resonance Imaging and Spectroscopy - Heart Failure With Preserved Ejection Fraction Substudy
3 other identifiers
interventional
120
1 country
1
Brief Summary
This study looks at the effects of weight loss in people who have heart failure with preserved ejection fraction (HFpEF) and are overweight or obese. The main questions it aims to answer are whether weight loss in this group of people improves:
- Symptom and quality of life questionnaires
- Body measurements such as height and weight
- Blood tests
- Ultrasound scans of the heart (echocardiogram)
- Magnetic Resonance Imaging (MRI) scans of the heart
- Exercise components during the scans
- 6 minute walk test Participants are randomly allocated (in other words, by lottery) to either 'diet' or 'control' groups. The control group will continue standard care. The diet group will be enrolled in a weight loss program supervised by the study team. Participants in the diet group will replace their usual meals with meal replacement products specifically designed to deliver a low calorie diet for weight loss. The products will consist of formula soups, shakes and porridges. This diet would last 8 weeks, followed by a guided period of food reintroduction and maintenance.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jan 2023
Longer than P75 for not_applicable
1 active site
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
January 20, 2023
CompletedFirst Submitted
Initial submission to the registry
March 15, 2023
CompletedFirst Posted
Study publicly available on registry
May 30, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 1, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2026
ExpectedApril 24, 2024
April 1, 2024
2.7 years
March 15, 2023
April 23, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Left atrial volume
measured on cardiac magnetic resonance imaging
Change from baseline at 3-6 months
Secondary Outcomes (4)
Body weight
Change from baseline at 3-6 months
Six minute walk distance
Change from baseline at 3-6 months
N-terminal pro brain natriuretic peptide (NT pro BNP)
Change from baseline at 3-6 months
Kansas City Cardiomyopathy Questionnaire (KCCQ)
Change from baseline at 3-6 months
Other Outcomes (6)
New York Heart Association (NYHA) class
Change from baseline at 3-6 months
Insulin resistance
Change from baseline at 3-6 months
Left ventricular mass
Change from baseline at 3-6 months
- +3 more other outcomes
Study Arms (2)
Diet
EXPERIMENTALDiet intervention (in addition to standard clinical care)
Control
NO INTERVENTIONStandard clinical care only
Interventions
The diet intervention delivers a weight loss program. The main component is a total diet replacement low energy diet. The intervention includes a gradual food reintroduction phase and maintenance strategies.
Eligibility Criteria
You may qualify if:
- Heart failure with preserved ejection fraction (HFpEF)
- Left ventricular ejection fraction (LVEF) =/\> 50%
- Body Mass Index (BMI) approximately =/\> 27.5 kg/m\^2
You may not qualify if:
- Contraindications to magnetic resonance imaging
- NYHA class IV
- Significant valvular, ischemic, infiltrative or other potentially confounding cardiac disease
- Pregnancy, planned pregnancy or lactating
- Any other conditions which may potentially compromise the safety or scientific validity of the study
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- University of Oxfordlead
- British Heart Foundationcollaborator
Study Sites (1)
Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital
Oxford, OX3 9DU, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Oliver J Rider, DPhil
University of Oxford
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 15, 2023
First Posted
May 30, 2023
Study Start
January 20, 2023
Primary Completion
October 1, 2025
Study Completion (Estimated)
December 1, 2026
Last Updated
April 24, 2024
Record last verified: 2024-04
Data Sharing
- IPD Sharing
- Will not share