AUC	Area under the receiver operating characteristic curves
CPS	Counts per read
FDR	False discovery rate
HDRS	Hamilton Depression Rating Scale
IPA	Ingenuity Pathway Analysis
LASSO	Least absolute shrinkage and selection operator
LR	Logistic regression
MDS	Multidimensional scaling
MDS-UPDRS-III	Movement Disorders Society Unified PD Rating Scale motor subscale
miRNAs	Micro RNAs
MoCA	Montreal Cognitive Assessment
PD	Parkinson’s disease
piRNAs	Piwi-interacting RNAs
qRT-PCR	Quantitative real-time polymerase chain reaction
RF	Random forest
SmRNAs	Small RNAs
UPSIT	University of Pennsylvania Smell Identification Test