Mondo Description Costello syndrome (CS) is a rare multisystemic disorder characterized by failure to thrive, short stature, developmental delay or intellectual disability, joint laxity, soft skin, and distinctive facial features. Cardiac and neurological involvement is common and there is an increased lifetime risk of certain tumors.

Uniprot Description Variant of Costello syndrome.

Disease Ontology Description A syndrome characterized by craniofacial dysmorphology, cardiac defects, mild mental retardation, and high birth weight followed by a failure to thrive and developmental delays.