About this trial
Transthyretin cardiac amyloidosis causes debilitating heart failure in older adults. The proposed research will develop a personalized exercise training program to improve functional capacity in patients on optimal treatment for transthyretin cardiac amyloidosis. This is a vital next step to improve functional capacity and quality of life of people suffering from transthyretin cardiac amyloidosis.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Diagnosis and typing of ATTR-CM by endomyocardial biopsy or by Grade 2 or Grade 3 pyrophosphate (PYP) positivity (exception: nonamyloid control arm in aim 1).
Diagnosis of heart failure, with prior or current need of diuretics and increased N-terminal prohormone B-natureitic peptide (BNP) (≥450 pg/ml).
Peak VO2 <80% predicted, indicating impaired aerobic capacity (for aim 2 only).
Taking tafamidis (for aim 2 only)
Disqualifiers
Acute myocardial infarction (Note: given that cardiac biomarkers such as troponin are frequently elevated in ATTR-CM patients, the diagnosis of acute myocardial infarction should be based on clinical diagnosis, not biomarkers alone)
>70% obstructive coronary artery disease
Severe aortic valve stenosis
Already actively participating in formal, facility-based cardiac exercise
Trial design
Single group
Treatments tested in this trial
Exercise Training
Other interventionA supervised, personalized exercise training program, which will consist of two 60-minute exercise training sessions per week.
Treatment groups
Trial outcomes
Primary outcomes
peak oxygen consumption (VO2)
CPET performed at baseline and 12-weeks, following the exercise intervention will be used to measure aerobic capacity, peak VO2. The change in peak VO2 from baseline to 12 weeks is the primary outcome measure. An increase of \> 1.0 ml/kg/min is considered a clinically meaningful increase
Secondary outcomes
Kansas City Cardiomyopathy Questionnaire
Kansas City Cardiomyopathy Questionnaire (KCCQ) is a quality of life questionnaire. This will be recorded at baseline, 4-weeks and 12-weeks. The change in KCCQ score from baseline to 12 weeks is a secondary outcome. KCCQ scores are scaled from 0 to 100; where 0 denotes the lowest reportable health status and 100 the highest. An increase of 5 points is considered a clinically meaningful increase.
Lower extremity function
The short physical performance battery (SPPB) is an assessment of lower extremity function. The change in SPPB score from baseline to 12 weeks is a secondary outcome. This is a scale of 0-12, where 0 denotes the worst performance and 12 the highest. An increase of 1 point is considered a clinically meaningful increase.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.