Neurodevelopmental Disorder with Seizures and Nonepileptic Hyperkinetic Movements, is also known as neurodevelopmental disorder with seizures and non-epileptic hyperkinetic movements. An important gene associated with Neurodevelopmental Disorder with Seizures and Nonepileptic Hyperkinetic Movements is CACNA1B (Calcium Voltage-Gated Channel Subunit Alpha1 B). Related phenotypes are hypotonia and global developmental delay