24-OHC	24S-Hydroxycholesterol
AD	Alzheimer’s Disease
ALS	Amyotrophic Lateral Sclerosis
AGC	Automatic Gain Control
AOO	Age of Onset
AUC	Area Under the Curve
BMI	Body Mass Index
CAG	Cytosine–Adenine–Guanine
CNS	Central Nervous System
CSF	Cerebrospinal Fluid
DDA	Data-Dependent Acquisition
DEP	Differentially Expressed Proteins
DTT	DL-dithiothreitol
ELISA	Enzyme-Linked Immunosorbent Assay
FC	Fold Change
FDR	False Discovery Rate
GO	Gene Ontology
GWAS	Genome-Wide Association Studies
HD	Huntington’s Disease
HTT	Huntingtin
IAA	Iodoacetamide
IPA	Ingenuity Pathway Analysis
iPSCs	Induced Pluripotent Stem Cells
IS	Independence Scale
LC-MS/MS	Liquid Chromatography Tandem Mass Spectrometry
LMM	Linear Mixed-Effects Model
LXR	Liver X Receptor
MSN	Medium Spiny Neurons
mHTT	Mutant Huntingtin
NCE	Normalized Collision Energy
ND	Neurodegenerative Disease
NS	Nervous System
PD	Parkinson’s Disease
PPI	Protein–Protein Interaction Networks
SSRI	Selective Serotonin Reuptake Inhibitors
TBS	Total Behavioral Score
TFC	Total Functional Capacity
TMS	Total Motor Score
UHDRS	Unified Huntington’s Disease Rating Scale