Cortical dysplasia, Decreased motor nerve conduction velocity, Delayed speech and language development, Depression, Distal amyotrophy, Distal muscle weakness, Distal sensory impairment, Downslanted palpebral fissures, Dyskinesia, Dystonia, EEG with focal epileptiform discharges, EEG with generalized epileptiform discharges, Epicanthus, Epileptic spasm, Everted lower lip vermilion, Focal-onset seizure, Generalized hypotonia, Generalized-onset seizure, Global developmental delay, Hydronephrosis, Hyperactivity, Hypertelorism, Hypoplasia of the corpus callosum, Hyporeflexia, Hypospadias, Hypotonia, Hypsarrhythmia, Impulsivity, Intellectual disability, mild, Intellectual disability, moderate, Intellectual disability, severe, Kyphosis, Large basal ganglia, Microcephaly, Microcornea, Motor delay, Motor stereotypy, Multifocal epileptiform discharges, Nasogastric tube feeding, Nevus, Polymicrogyria, Poor speech, Ptosis, Scoliosis, Seizure, Short attention span, Short philtrum, Sleep disturbance, Sparse hair, Spasticity, Strabismus, Tented upper lip vermilion, Ventriculomegaly