About this trial
Cardiac transthyretin amyloidosis (ATTR), caused by ventricular depositions of misfolded transthyretin, results in an infiltrative cardiomyopathy, progressing from pronounced myocardial wall thickening, diastolic and systolic dysfunction to the development of terminal heart failure. Recently, treatment options for TTR amyloidosis have become available. However costs for therapy are enormous and previous trials were not able to differentiate between patients that might benefit from treatment and those without a need for treatment.
the investigators study aims to determine markers, as assessed by cardiac magnet resonance imaging (CMR) feature tracking (FT) and T1- and T2- mapping, that might reliably indicate disease severity and could help to identify patients that might benefit from (ongoing) TTR stabilization treatment.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Confirmed diagnosis of amyloidosis w/wo cardiac involvement
General Consent
Disqualifiers
Inability to give consent or existence of a written or documented oral refusal of the data subject.<18 years of age
Trial population
Confirmed diagnosis of amyloidosis w/wo cardiac involvement
Trial design
Case-only
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
LV (left ventricle) and RV (right ventricle) function as assessed by CMR feature tracking as predictor for MACE (major adverse cardiac event)
Global and regional longitudinal (%), circumferential (%) and radial (%) strain measurements are used to quantify LV and RV function before and after therapy initiation. MACE is defined as a composite of sustained ventricular tachycardia, hospitalization for heart failure and all-cause death.
LV and RV tissue characterization as assessed by T1 and T2 mapping as predictor for MACE
Global and regional tissue characteristics are assessed by repetitive T1 and T2 mapping (global and regional T1 and T2 time (ms)) before and during therapy. MACE is defined as a composite of major cardiovascular endpoints listed above.
Late gadolinium enhancement as predictor for MACE
Global and regional myocardial tissue is characterized by gadolinium contrast agent application. The presence and extent (% and total mass (g)) of late gadolinium enhancement is evaluated as a predictor for MACE.
Extracellular volume (ECV) as predictor for MACE
ECV (%) as a marker of myocardial tissue remodelling is calculated from native and post-contrast T1 mapping and haematocrit before and during therapy.
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