Heart failure (HF) is when the heart doesn't pump blood well enough. This study tests if a drug called maridebart cafraglutide helps people with HF and obesity. It aims to see if it lowers hospital visits, heart-related deaths, and improves symptoms. The study is in two parts and will end part one after 850 heart-related events occur. People must be 18+, have a high BMI (over 30), and have a type of HF with a left ventricular ejection fraction (LVEF) over 40%. This means their heart's ability to pump blood is somewhat preserved. Exclusion criteria include recent major heart events, certain heart types, severe diabetes, or specific medical conditions.
- The study will have a double-blind period, meaning neither the participants nor researchers know who gets the actual drug or a placebo.
- Part 1 will conclude when about 850 heart-related events happen, which means it may take a while.
- Participants need to be committed, as it requires following specific health guidelines and possibly managing existing health issues.