1-DE	one-dimensional gel electrophoresis
2-DE	two-dimensional gel electrophoresis
5′-HT	5-hydroxytryptamine
ADI-R	Autism Diagnostic Interview-Revised
ANR	without neurologic regression
APO	apolipoprotein
AR	neurologic regression
ASD	Autism Spectrum Disorders
AUC	area under the ROC curve
BBB	Blood–brain barrier
CDSS	Clinical decision support system
CHD8	chromodomain helicase DNA binding protein 8
CHICA	Child Health Improvement Trough Computer Automation
CNTNAP2	Contactin associated protein-like 2
DB	protein databases
DBI	diazepam-binding inhibitor
DBS	dried blood spots
DHA	docosahexaenoic acid
DHEA-S	Dehydroepiandrosterone sulfate
DIA	Data-independent analysis
DISC1	Disrupted in Schizophrenia 1
DSS	Decision support systems
EC	external calibration
EHR	electronic health record
ELISA	enzyme-linked immunoadsorbent assay
FHR1	complement factor H-related protein
FN1	fibronectin 1
GC	gas chromatography
GI	Gastrointestinal symptoms
Glo1	glyoxalase 1
GSH	glutathione
1H-NMR	proton nuclear magnetic resonance spectroscopy
HPLC-MS/MS	high-performance liquid chromatography with tandem mass spectrometry
IC	internal calibration
ID	identification
IPA	Ingenuity Pathway Analysis
IS	internal standards
LC	liquid chromatography
LC-MS/MS	liquid chromatography-tandem mass spectrometry
MS	mass spectrometry
NGS	Next-generation sequencing
NMR	nuclear magnetic resonance spectroscopy
PPIs	Protein–protein interactions
ROC	receiver operating characteristic
S1P	sphingosine 1-phosphate
SH3	SRC Homology 3 Domain
SHANK 3	SH3 and multiple ankyrin repeat domain 3
SIL	Synthetic stable isotope labelled
SRM-MS	selected reaction monitoring mass spectrometry
SRM/MRM	selected reaction monitoring/multiple reaction monitoring
SRS	Social Responsiveness Scale
SWATH	Sequential Window Acquisition of all Theoretical Mass Spectra
TJ	tight junction
TSC	tuberous sclerosis complex
TSC1	tuberous sclerosis 1
TSC2	tuberous sclerosis 2
tSIL	synthetic labeled tryptic peptides
UPLC/Q-TOF MS/MS	ultra-performance liquid chromatography quadrupole time-of-flight tandem mass tandem mass spectrometry