The Transthyretin Amyloidosis Market is evolving from a narrowly treated rare-disease segment into a more structured, multi-modality specialty market as awareness, diagnosis, and disease-modifying treatment options expand. Transthyretin amyloidosis spans two major clinical demand pools—cardiomyopathy and polyneuropathy—with treatment adoption increasingly shaped by earlier detection, subtype differentiation, and the shift toward intervention before irreversible organ damage. The market’s top end uses are centered on hospital-based cardiology, neurology, rare disease centers, and multidisciplinary referral networks, where therapy decisions increasingly depend on genotype status, disease stage, cardiac involvement, neurologic burden, and long-term tolerability. Current momentum is being reinforced by broader recognition of red-flag symptoms, higher use of non-invasive imaging pathways, and more systematic genetic confirmation in diagnosed patients.