Table 1: Summary of proteins responsible for amyloidosis, the corresponding abbreviations and the key characteristics associated with each.

Amyloidogenic protein Abbreviation Characteristics
Immunoglobulin light chain AL Primary amyloidosis, plasma cell dyscrasias. Cardiomyopathy, hepatomegaly, nephrotic syndrome.
Immunoglobulin heavy chain AH Plasma cell dyscrasias, renal involvement.
Transthyretin ATTR Familial amyloidosis, systemic, associated with peripheral neuropathy and cardiomyopathy.
Leukocyte chemotactic factor 2 ALECT 2 Renal dysfunction, lack of cardiac or nerve involvement.
Serum amyloid A AA Acquired, reactive, systemic, linked to inflammatory disorders or chronic infection. Proteinuria, loss of renal function.
Apolipoprotein A-I AApoAI Autosomal dominant systemic, organ involvement related to specific mutations.
Apolipoprotein A-II AApoAII Autosomal dominant systemic, renal failure.
Lysozyme ALys Autosomal dominant, GI and renal dysfunction.
Fibrinogen AFib Autosomal dominant, deposition in kidney, heart, liver, and spleen; prominent renal involvement.
Gelsolin AGel Autosomal dominant, polyneuropathy, corneal lattice dystrophy.
β2-microglobulin Aβ2M Hemodialysis-related amyloidosis with musculoskeletal manifestations.