MYCBP2-related developmental delay with corpus callosum defects (MONDO_1060117) is any neurodevelopmental disorder in which the cause of the disease is a mutation in the MYCBP2 gene. This condition is characterized by variable corpus callosum defects consistent with dysgenesis, and a broad spectrum of neurobehavioural deficits including developmental delay, intellectual disability, epilepsy, and autistic features. Also known as: MDCD.