Mondo Description Any X-linked syndromic intellectual disability in which the cause of the disease is a mutation in the UPF3B gene.

Uniprot Description A disorder characterized by significantly below average general intellectual functioning associated with impairments in adaptive behavior and manifested during the developmental period. MRXS14 patients manifest mental retardation associated with other variable signs such as autistic features, slender build, poor musculature, long, thin face, high-arched palate, high nasal bridge, and pectus deformities.

Disease Ontology Description A syndromic X-linked intellectual disability characterized by mild to severe intellectual disability, autistic features, slender build, poor musculature, long, thin face, high-arched palate, high nasal bridge, and pectus deformities that has_material_basis_in mutation in the UPF3B gene on chromosome Xq24.