Gnao1-Related Developmental Delay-Seizures-Movement Disorder Spectrum, also known as gnao1-related neurodevelopmental disorder, is related to developmental and epileptic encephalopathy and movement disease. An important gene associated with Gnao1-Related Developmental Delay-Seizures-Movement Disorder Spectrum is GNAO1 (G Protein Subunit Alpha O1). Affiliated tissues include brain.