The study focuses on Transthyretin-Mediated Amyloid Cardiomyopathy, a rare disorder in which abnormal protein deposits make the heart walls stiff and limit pumping ability. The investigational medicines are eplontersen, given as a subcutaneous injection, and ALXN2220, given intravenously. Participants receive either the combination of both medicines or the injection together with a placebo.
The purpose of the study is to determine whether the combined treatment improves the ability to perform physical activity compared with the injection alone. Participants are randomly assigned to one of the two groups and neither the participants nor the study staff know which group is receiving the active antibody (double‑blind). Over roughly one year, they attend regular visits where they undergo a breathing and exercise test called CPET that measures the peak oxygen use (VO2), have blood drawn to check a heart‑stress marker (NT-proBNP), and complete a questionnaire that assesses heart‑failure symptoms (KCCQ-CSS).
Safety is monitored throughout the study, and any side effects are recorded. The trial continues for about 52 weeks, after which the data on functional capacity and safety are analyzed.



Frankrig
Sverige
