NCT06345235

New Biomarkers and Plasma Prothrombotic Potential in Cardiac Transthyretin Amyloidosis

Recruiting now Last updated 19 April 2024

What this trial tests

trial testing blood test in Transthyretin Amyloidosis in 100 participants. Currently enrolling.

Timeline

11 July 2023

Primary endpoint
11 July 2024

11 July 2024

Quick facts

Lead sponsor	John Paul II Hospital, Krakow
Status	Recruiting now
Study type	OBSERVATIONAL
Enrollment	100
Start date	11 July 2023
Primary completion	11 July 2024
Estimated completion	11 July 2024
Sites	1 location across Poland

Drugs / interventions tested

• blood test — full drug profile →

Conditions studied

• Transthyretin Amyloidosis — all drugs for Transthyretin Amyloidosis →

Sponsor

John Paul II Hospital, Krakow

Who can join

18 and older, any sex, with Transthyretin Amyloidosis. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The development of cardiac amyloidosis is caused by the deposition of misfolded, insoluble proteins in the extracellular matrix of tissues. An important element of the clinical picture of the disease is the increased risk of thromboembolic complications, independent of the occurrence of atrial fibrillation, and the presence of intracardiac thrombi. The pathomechanism may be related to an increase in filling pressure or amyloid infiltration leading to myocardial damage and endothelial dysfunction, which may activate the prothrombotic inflammatory cascade, resulting in increased thrombogenic potential. Currently, there is limited published data on the potential role of new heart failure biomarkers in the assessment of ATTR cardiomyopathy, particularly in the assessment of asymptomatic carriers of pathogenic TTR variants. Moreover, there are few literature reports on the direct assessment of the coagulation system in this group of patients, and the pathomechanism of the increased thromboembolic risk is unexplored.

Purpose of the study: To assess the diagnostic value of biomarkers related to heart failure (growth differentiation factor-15 (GDF15), soluble suppression of tumorigenicity-2 (ST2), galectin-3), amyloidosis ( TTR, tissue inhibitor of metalloproteinase-1 (TIMP-1), matrix metalloproteinase-9 (MMP-9, matrix metalloproteinase-9), neurofilament light chain (NfL)) and the generation potential thrombin as a marker of the prothrombotic state in the course of ATTR.

Methods: This prospective, single-center study will include consecutive patients diagnosed with ATTR cardiomyopathy (GROUP 1, n=30), asymptomatic carriers of pathogenic TTR variants (GROUP 2, n=30), and a matched control group of healthy volunteers (GROUP 3 , n=20). Material for research was collected and secured from all study participants. After giving informed consent, all patients will be tested using the ELISA method from peripheral blood (enzyme-linked immunosorbent assay) GDF15, ST2, TTR, TIMP-1, MMP-9, galectin-3, NfL. The values of these biomarkers will be compared in subgroups and correlated with clinical data, laboratory test results, echocardiography including analysis of left ventricular global strain (GLS), and scintigraphy. Additionally, the prothrombotic potential of plasma will be tested in both groups of patients using the calibrated automatic thrombogram (CAT) method, in accordance with the protocol previously used in the laboratory Expected results: The project will provide information on the value of biomarkers in the assessment of ATTR cardiomyopathy, especially in the assessment of asymptomatic carriers of pathogenic TTR variants, which may translate into the creation of a diagnostic algorithm for early identification of the development of the disease. Moreover, it will allow us to determine whether patients with cardiac ATTR are characterized by a prothrombotic state, which has not yet been described in the literature and may have potential clinical implications.

Publications & conference data

No peer-reviewed publications indexed yet for this trial.