Hereditary Amyloidosis Treatment segmentation by Type disaggregates the market into ATTRv (hTTR), apolipoprotein-related, gelsolin, lysozyme, fibrinogen Aα-chain, and other ultra-rare variants. ATTRv dominates value, accounting for >85 % of 2023 global sales because its tetramer-stabilising small molecules (diflunisal, tafamidis) and oligonucleotide therapies command premium prices and have registrational evidence in polyneuropathy and cardiomyopathy. Non-TTR forms are collectively <15 % of the market; they lack mutation-specific agents, so revenue is driven mainly by symptomatic therapies and off-label use of doxycycline or plasma exchange, resulting in a low per-patient commercial footprint. Nevertheless, orphan-drug incentives and registries for gelsolin and apoA-I amyloidosis are expanding clinical pipelines, implying that the market taxonomy will diversify as gene-editing and RNAi platforms are re-deployed from ATTR to these smaller cohorts.