US Benchmarking Clinical Study

The goal of this observational study is to measure shear wave velocity (SWV) in patients with non-reduced left ventricular ejection fraction (LVEF) heart failure and left ventricular hypertrophy, with or without transthyretin amyloidosis with cardiomyopathy (ATTR-CM), and in control subjects without heart failure or cardiomyopathy. The main question it aims to answer is: • Can SWV be used to measure myocardial and liver stiffness in the study's target populations? Researchers will compare patients with ATTR-CM, patients without ATTR-CM, and a control group to determine the distributions of SWV in each population. Participants will: * Have a standard cardiology assessment, including a physical exam, blood work, and an echocardiogram. * Undergo an investigational assessment with the eMyosound LYRA device to measure SWV in their myocardium and liver. * Have the investigational assessment repeated by a second observer to assess measurement reliability.

NCT Number	NCT07215715
Lead Sponsor	eMyosound SAS Collaborators: Massachusetts General Hospital, Brigham and Women's Hospital, Boston Medical Center
Conditions	HFpEF - Heart Failure With Preserved Ejection Fraction, HFmrEF, ATTR-CM (Transthyretin Amyloid Cardiomyopathy), Left Ventricular Hypertrophy, Cardiac Amyloidosis
Enrollment	150 participants
Start Date	2025-09-16
Primary Completion	2026-07 (estimated)
Study Completion	2026-07 (estimated)
Updated on ClinicalTrials.gov	2025-10-20