A Study of Tirzepatide (LY3298176) in Participants With Heart Failure With Preserved Ejection Fraction (HFpEF) and Obesity: The SUMMIT Trial

Summary

The main purpose of this study is to assess the efficacy and safety of Tirzepatide (LY3298176) in participants with heart failure with preserved ejection fraction and obesity.

Timeline

Start

2021-04-20

Primary completion

2024-07-02

Completion

2024-07-02

Publications

• Borlaug BA, Zile MR, Kramer CM, Litwin SE, Ye W, Ou Y, Hurt K, Murakami M, Packer M; SUMMIT Trial Group. Effects of Tirzepatide in Obesity-Related HFpEF by Sex: A Prespecified Secondary Analysis From the SUMMIT Trial. JACC Heart Fail. 2026 Jul 7:103218. doi: 10.1016/j.jchf.2026.103218. Online ahead of print.
• Packer M, Zile MR, Kramer CM, DiMaria JM, Baum SJ, Litwin SE, Murakami M, Zhou C, Ou Y, Koeneman L, Borlaug BA; SUMMIT Trial Study Group. Influence of Type 2 Diabetes on the Effects of Tirzepatide in Patients With Heart Failure and a Preserved Ejection Fraction With Obesity: A Prespecified Stratification-Based Analysis. J Am Coll Cardiol. 2025 Sep 9;86(10):696-707. doi: 10.1016/j.jacc.2025.06.058.
• Borlaug BA, Zile MR, Kramer CM, Ye W, Ou Y, Hurt K, Murakami M, Packer M; SUMMIT Trial Study Group. Impact of Body Mass Index, Central Adiposity, and Weight Loss on the Benefits of Tirzepatide in HFpEF: The SUMMIT Trial. J Am Coll Cardiol. 2025 Jul 29;86(4):242-255. doi: 10.1016/j.jacc.2025.04.059.
• Packer M, Zile MR, Kramer CM, Murakami M, Ou Y, Borlaug BA; SUMMIT Trial Study Group. Interplay of Chronic Kidney Disease and the Effects of Tirzepatide in Patients With Heart Failure, Preserved Ejection Fraction, and Obesity: The SUMMIT Trial. J Am Coll Cardiol. 2025 May 13;85(18):1721-1735. doi: 10.1016/j.jacc.2025.03.009. Epub 2025 Mar 31.
• Kramer CM, Borlaug BA, Zile MR, Ruff D, DiMaria JM, Menon V, Ou Y, Zarante AM, Hurt KC, Murakami M, Packer M; SUMMIT Trial Study Group. Tirzepatide Reduces LV Mass and Paracardiac Adipose Tissue in Obesity-Related Heart Failure: SUMMIT CMR Substudy. J Am Coll Cardiol. 2025 Feb 25;85(7):699-706. doi: 10.1016/j.jacc.2024.11.001. Epub 2024 Nov 18.
• Zile MR, Borlaug BA, Kramer CM, Baum SJ, Litwin SE, Menon V, Ou Y, Weerakkody GJ, Hurt KC, Kanu C, Murakami M, Packer M; SUMMIT Trial Study Group. Effects of Tirzepatide on the Clinical Trajectory of Patients With Heart Failure, Preserved Ejection Fraction, and Obesity. Circulation. 2025 Mar 11;151(10):656-668. doi: 10.1161/CIRCULATIONAHA.124.072679. Epub 2024 Nov 18.
• Packer M, Zile MR, Kramer CM, Baum SJ, Litwin SE, Menon V, Ge J, Weerakkody GJ, Ou Y, Bunck MC, Hurt KC, Murakami M, Borlaug BA; SUMMIT Trial Study Group. Tirzepatide for Heart Failure with Preserved Ejection Fraction and Obesity. N Engl J Med. 2025 Jan 30;392(5):427-437. doi: 10.1056/NEJMoa2410027. Epub 2024 Nov 16.
• Borlaug BA, Zile MR, Kramer CM, Baum SJ, Hurt K, Litwin SE, Murakami M, Ou Y, Upadhyay N, Packer M. Effects of tirzepatide on circulatory overload and end-organ damage in heart failure with preserved ejection fraction and obesity: a secondary analysis of the SUMMIT trial. Nat Med. 2025 Feb;31(2):544-551. doi: 10.1038/s41591-024-03374-z. Epub 2024 Nov 17.
• Reese-Petersen AL, Holm Nielsen S, Bulow Sand JM, Schattenberg JM, Bugianesi E, Karsdal MA. The sclerotic component of metabolic syndrome: Fibroblast activities may be the central common denominator driving organ function loss and death. Diabetes Obes Metab. 2024 Jul;26(7):2554-2566. doi: 10.1111/dom.15615. Epub 2024 May 3.

Drugs

Indications