18F -FDG	Fluorodeoxyglucose F18
AD	Alzheimer’s disease
ALS	Amyotrophic lateral sclerosis
ALS-FRS-R	ALS functional rating scale revised
ASO	Antisense oligonucleotide
Bi	Behavioral impairment
Bci	Behavioral and cognitive impairment
BMI	Body mass index
C9orf72	Chromosome 9 open reading frame 72
Ci	Cognitive impairment
CEP	CarboxyEthylPyrole
CHIT1	Chitotriosidase 1
CNS	Central nervous system
CSA	Cross-sectional areas
CRP	C-reactive protein
CSF	Cerebrospinal fluid
DPRs	Dipeptide repeats
EEG	Electroencephalography
EVs	Extracellular vesicles
fALS	Familial ALS
FoxP3	Forkhead box P3
FUS	Fused in sarcoma
FTD	Frontotemporal dementia
FVC	Force vital capacity
HDL	High density lipoprotein
IL-6	Interleukin-6
LMN	Lower motor neurons
MND	Motor neuron disease
MMP1	Matrix metalloproteinase 1
MRI	Magnetic Resonance Imaging
MRN	Magnet resonance neurography
MUAP	Motor unit action potential
MUNIX	Motor unit number index
MUNE	Motor unit number estimation
NCT	Nuclear cytoplasmic transport
MPO	Myeloperoxidase
Nf	Neurofilaments
PBMC	Peripheral blood mononuclear cells
PET	Positron emission tomography
PFC	Prefrontal cortex
PLS	Primary lateral sclerosis
PMA	Progressive muscular atrophy
PNS	Peripheral nervous system
REE	Resting energy expenditure
ROI	Region of interest
sALS	Sporadic ALS
SOD1	Superoxide dismutase 1
TDP-43	TAR DNA-binding protein 43
TARDBP	TAR DNA-binding protein
UMN	Upper motor neurons