obsolete AP4-related intellectual disability and spastic paraplegia https://github.com/monarch-initiative/mondo/issues/5114 https://github.com/monarch-initiative/mondo/issues/5588 https://github.com/monarch-initiative/mondo/issues/6695 https://github.com/monarch-initiative/mondo/issues/6752 https://github.com/monarch-initiative/mondo/issues/6877 https://github.com/monarch-initiative/mondo/issues/6878 https://github.com/monarch-initiative/mondo/issues/7693 https://www.malacards.org/card/severe_intellectual_disability_and_progressive_spastic_paraplegia true OBSOLETE. A disorder that presents with spastic paraplegia and intellectual disability in which the cause of the disease is a mutation in the AP4B1 gene. MONDO:0017241 AP-4 deficiency syndrome