Neurodevelopmental Disorder with Spastic Quadriplegia and Brain Abnormalities with or Without Seizures, also known as nedsbas, is related to congenital disorder of glycosylation, type iia and microcephaly. An important gene associated with Neurodevelopmental Disorder with Spastic Quadriplegia and Brain Abnormalities with or Without Seizures is WDR45B (WD Repeat Domain 45B). Affiliated tissues include brain and cortex, and related phenotypes are spastic paraplegia and intellectual disability, profound