Heart failure & cardiomyopathiesTrial design

Rationale and Design of CARDIO-TTRansform, a Phase 3 Trial of Eplontersen in Transthyretin Amyloid Cardiomyopathy

Circ Heart FailPublished

  • Phase 3, randomized, double-blind, placebo-controlled trial

Study context

Population
Patients with transthyretin amyloidosis with cardiomyopathy (histological evidence of amyloid deposits or grade 2 to 3 cardiac uptake on cardiac scintigraphy in the absence of plasma cell dyscrasia, New York Heart Association class I–III, end-diastolic interventricular septum thickness >12 millimeters)randomized participants who were dosed with study drug or placebo
Participants
1,432 patients
Planned comparison
eplontersen 45 mg or placebo, randomized 1:1, with locally available standard of care including unrestricted use of TTR stabilizers
Primary endpoint
Composite of:
  • Cardiovascular mortality
  • Recurrent clinical cardiovascular events
Follow-up
Through 140 weeks

No results yet. This paper sets out the design of a trial; its results are to come.

Original publication

Rationale and Design of CARDIO-TTRansform, a Phase 3 Trial of Eplontersen in Transthyretin Amyloid Cardiomyopathy. Circ Heart Fail. Published 9 May 2026. doi:10.1161/circheartfailure.126.014205

Summarised from the published abstract; every number is checked against it