Early identification of transthyretin-related hereditary cardiac amyloidosis.

Amyloidosis is characterized by the extracellular deposition of highly-organized fibrillar aggregates showing a cross-beta super-secondary structure (1). Several proteins are amyloidogenic in humans, resulting in different clinical presentations, either systemic or localized. Transthyretin-related hereditary amyloidosis (ATTR) is a late-onset, dominantly inherited systemic amyloidosis. Heterozygous gain-of-function mutations in the TTR