[64Cu]FBP8 PET for Early Detection of Intracardiac Thrombus in Amyloid Cardiomyopathy

The primary goal of this pilot study is to determine whether \[64Cu\]FBP8, a novel fibrin-binding positron emission tomography (PET) probe, can identify intracardiac thrombi when paired with simultaneous hybrid cardiac PET/MRI in twenty (20) individuals with transthyretin or light chain cardiac amyloidosis and atrial fibrillation (AF) or atrial flutter (AF). The primary hypothesis of this study is that \[64Cu\]FBP8 PET/MRI can identify intracardiac thrombi in \>90% of subjects with confirmed intracardiac thrombi based on transesophageal echocardiogram (TEE). In secondary analyses, the investigators will seek to determine associations between intracardiac thrombi and left atrial function and left ventricular amyloid burden.

NCT Number	NCT07560306
Lead Sponsor	Brigham and Women's Hospital
Conditions	Cardiac Amyloidosis
Enrollment	20 participants
Start Date	2026-07-07
Primary Completion	2027-03-30 (estimated)
Study Completion	2027-03-30 (estimated)
Updated on ClinicalTrials.gov	2026-07-21