Transthyretin cardiac amyloidosis (ATTR-CA) is a progressive infiltrative cardiomyopathy caused by the deposition of misfolded transthyretin protein within the myocardium. Current disease staging and follow-up strategies mainly rely on cardiac biomarkers and renal function; however, the systemic nature of ATTR suggests that additional organ involvement may provide valuable prognostic information. The purpose of this prospective observational study is to investigate liver dysfunction and coagulation abnormalities in patients with wild-type or hereditary ATTR-CA and to evaluate their potential role as novel markers of disease severity and progression. Patients with ATTR-CA will be compared with an age-matched control population with non-amyloid hypertrophic cardiomyopathy. Clinical, laboratory, echocardiographic, hepatic ultrasound, liver stiffness, and coagulation parameters will be assessed at baseline and during follow-up. The study will also evaluate changes in these parameters after 6 and 12 months of treatment with tafamidis. The results may improve the understanding of cardio-hepatic interactions in ATTR-CA and identify new tools for disease staging and longitudinal monitoring.
Age range
18 Years
Sex
ALL
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Liver Stiffness Measured by Transient Elastography (FibroScan)
Timeframe: Baseline, 6 Months, 12 Months
Controlled Attenuation Parameter (CAP) Measured by FibroScan
Timeframe: Baseline, 6 months, 12 months
Serum Aspartate Aminotransferase (AST/GOT)
Timeframe: Baseline, 6 months, 12 months
Serum Alanine Aminotransferase (ALT/GPT)
Timeframe: baseline, 6 months, 12 months
Serum Gamma-Glutamyl Transferase (GGT)
Timeframe: baseline, 6 months, 12 months
Serum Alkaline Phosphatase (ALP)
Timeframe: baseline, 6 months, 12 months
Serum Bile Acids
Timeframe: baseline, 6 months, 12 months
Total Bilirubin (mg/dL)
Timeframe: baseline, 6 months, 12 months
Direct Bilirubin (mg/dL)
Timeframe: baseline, 6 months, 12 months
Serum Albumin (g/dL)
Timeframe: baseline, 6 months, 12 months
Serum Gamma Globulins (g/dL)
Timeframe: baseline, 6 months, 12 months
Serum Immunoglobulin M (IgM) (g/L)
Timeframe: baseline, 6 months, 12 months
Serum Ferritin (ng/mL)
Timeframe: baseline, 6 months, 12 months
Anti-Mitochondrial Antibodies
Timeframe: baseline, 6 months, 12 months
Fibrosis-4 (FIB-4) Index
Timeframe: baseline, 6 months, 12 months
Portal Vein Diameter Assessed by Liver Ultrasound
Timeframe: baseline, 6 months, 12 months
Portal Vein Flow Velocity Assessed by Doppler Ultrasound (cm/s)
Timeframe: baseline, 6 months, 12 months
Spleen Diameter Assessed by Ultrasound (mm)
Timeframe: baseline, 6 months, 12 months
Prothrombin Time (PT) (s)
Timeframe: baseline, 6 months, 12 months
Activated Partial Thromboplastin Time (aPTT) (s)
Timeframe: baseline, 6 months, 12 months
International Normalized Ratio (INR)
Timeframe: baseline, 6 months, 12 months
Plasma Fibrinogen
Timeframe: baseline, 6 months, 12 months
Fibrin/Fibrinogen Degradation Products
Timeframe: Baseline, 6 months, 12 months
D-Dimer
Timeframe: baseline, 6 months, 12 months
Alpha-2-Antiplasmin
Timeframe: baseline, 6 months, 12 months
Antithrombin
Timeframe: baseline, 6 months, 12 months
Plasminogen
Timeframe: baseline, 6 months, 12 months
Thrombin-Antithrombin Complex
Timeframe: baseline, 6 months, 12 months
Plasmin-Alpha-2-Antiplasmin Complex
Timeframe: baseline, 6 months, 12 months
Prothrombin Fragment 1+2
Timeframe: baseline, 6 months, 12 months
Coagulation Factor X
Timeframe: baseline, 6 months, 12 months
von Willebrand Factor Antigen
Timeframe: baseline, 6 months, 12 months
Plasminogen Activator Inhibitor-1 (PAI-1)
Timeframe: baseline, 6 months, 12 months