ATTRv	hereditary transthyretin amyloid
ATTRwt	wildtype transthyretin amyloid
AL	immunoglobulin light chain amyloid
APOLLO	phase 3 study of Patisiran for treatment of hereditary transthyretin amyloidosis with polyneuropathy
CADT	compound autonomic dysfunction test
CM	cardiomyopathy
ELISA	enzyme-linked immunosorbent assay
EMG	electromyography
ESC	electrochemical skin conductance
FAP	familial amyloidotic polyneuropathy
HELIOS	phase 3 open-label study of Vutrisiran in patients with hereditary transthyretin amyloidosis with polyneuropathy
IENFD	intra-epidermal nerve fiber density
mNIS + 7	modified neuropathy impairment score + 7
MRC	medical research council
NCS	nerve conduction studies
NfL	neurofilament light chain
NIS	neuropathy impairment score
NIS-LL	neuropathy impairment score lower limb
NIS-UL	neuropathy impairment score upper limb
Norfolk QOL-DN	Norfolk quality of life diabetic neuropathy
NT-proBNP	N-terminal pro-brain-type natriuretic peptide
OLE	open-label extension
PND	polyneuropathy disability
PNP	polyneuropathy
QST	quantitative sensory testing
R-ODS	Rasch-built overall disability score
ROC	receiver operating characteristics
SFN-SIQ	small fiber neuropathy-symptom inventory questionnaire
Simoa	single-molecule array
TTR	transthyretin
TTRv	transthyretin gene variant