Monarch Disease Ontology entry MONDO_0009524 (intellectual disability-spasticity-ectrodactyly syndrome) is a rare intellectual disability syndrome characterized by severe intellectual disability, spastic paraplegia (with wasting of the lower limbs) and distal transverse defects of the limbs (e.g. ectrodactyly, syndactyly, clinodactyly of the hands and/or feet). Also known as: Jancar syndrome.