GSN and amyloidosis: Other hereditary amyloidoses include genes for the apolipoprotein A-2 (APOA2; amyloidosis subform: AApoA2), for the α fibrinogen (FGA), the gelsolin (GSN, “finnish amyloidosis”; amyloidosis subform: AGel), lysozyme (LYZ; ALys), cystatin C (CYS3; ACys), or the “β precursor protein” (Aβ), but do not show any cardiac manifestation.