CNDD	Complex neurodevelopmental disorders
ASD/ID	Autism Spectrum Disorder/Intellectual Disability
GDD	Global Developmental Delay
IESS	Infantile Epileptic Spasm Syndrome
LGS	Lennox–Gastaut Syndrome
DEE	Developmental and Epileptic Encephalopathy
ASM	Anti-Seizure Medication
Dup15q	Chromosome 15q duplication
Idic15	Pseudoisodicentric or isodicentric chromosome 15 duplication
Int15	interstitial chromosome 15 duplication
mTOR	Mammalian target for rapamycin
GATOR complex	GTPase activating protein (GAP) activity toward recombinant activating genes (RAGs) complex
MCD	Malformation of Cortical Development
SCN1A	Sodium voltage-gated channel alpha subunit 1
MECP2	Methyl-CpG binding protein 2
KCNQ2/ KCNQ3	Voltage-gated potassium channel subunits 2 and 3
UBE3A	Ubiquitin protein ligase E3A
ARX	Aristaless-related homeobox, X-linked
STXBP1	Syntaxin-binding protein 1
PWACR	Prader–Willi Angelman Critical Region
GABRB3	Beta-3 subunit of the GABA-A receptor
GABRA5	Alpha-5 subunit of the GABA-A receptor
GABRG3	Gamma-3 subunit of the GABA-A receptor
SUDEP	Sudden Unexpected Death in Epilepsy Patients
5HT1A	Serotonin or 5-hydroxytryptamine 1A