Wild-Type Transthyretin Cardiac Amyloidosis
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Age = 60 years for men. Age = 70 years for women - TC99-DPD-scintigraphy positive for cardiac involvement (Perugini II-III) - Negative serum immunofixation - Normal Kappa/Lambda ratio - Gillmore stage I (NT-proBNP = 3000 ng/L, eGFR = 45 mL/min) - NYHA-class I-IIa - Informed consent Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) no F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 36
Exclusion criteria
Exclusion criteria: - Already known, similar diagnosis o Hereditary Transthyretin Cardiac Amyloidosis (ATTRh) o Light Chain Amyloidosis (AL Amyloidosis) o Monoclonal Gammopathy of Unspecified Significance (MGUS) o Myelomatosis o Mb. Waldenstrøm - Medical treatment with loop diuretics - Contraindications to TMZ (Allergic reaction, Parkinson’s Disease, Tremor, Restless Leg Syndrome, eGFR < 30 mL/min) - Contraindications to TC99-DPD-skintigraphy (allergic reaction to contrast) - Significant co-morbidity assessed by the investigator - Patients for whom informed consent cannot be collected (mental illness, dementia)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: The purpose of this study is: 1) to characterize the oxidative capacity of myocardial mitochondria as well as to investigate the treatment effect of Trimetazidine (TMZ) in patients with stage 1 cardiac amyloidosis in a double-blind, placebo-controlled cross-over study; 2) to examine the effect of TMZ at rest and during exercise on systolic and diastolic function measured by right heart catheterization (RHC) and advanced echocardiography; 3) to investigate and characterize the morphology of myocardial myocytes and mitochondria by electron microscopy; 4) to compare the oxidative capacity, morphology, and myocardial function of mitochondria in patients with early-stage asymptomatic disease versus patients with more advanced symptomatic disease. ;Secondary Objective: Not applicable;Primary end point(s): The primary end point is cardiac index measured by RHC. ;Timepoint(s) of evaluation of this end point: At study completion. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary end point(s): Secondary end points are mitochondrial respiration measured by high resolution respirometry, left ventricular global longitudinal strain measured by transthoracic echocardiography, and walking distance on the 6-minute walk test.;Timepoint(s) of evaluation of this end point: At study completion. | — |
Countries
Denmark
Contacts
Aarhus University Hospital