APOA1 and hereditary amyloidosis: Hereditary amyloidosis comprises more than 30 subtypes, including TTR, ApoA-I, ApoA-II, gelsolin, lysozyme amyloidosis, cystatin C amyloidosis (ACys), fibrinogen Aα-chain, β2-microglobulin, ApoC2-II, and ApoC39.