Mondo Description A severe X-linked recessive neurodevelopmental disorder characterized by severe contractures (arthrogryposis) and intellectual disability.

Uniprot Description A severe X-linked recessive neurodevelopmental disorder affecting the central and peripheral nervous systems. It is characterized by onset of muscle weakness in utero (fetal akinesia). Affected boys are born with severe contractures, known as arthrogryposis, and have delayed motor development, facial and bulbar weakness, characteristic dysmorphic facial features, and skeletal abnormalities, such as hip dislocation, scoliosis, and pes equinovarus. Those that survive infancy show mental retardation. Carrier females may have mild features of the disorder.

Disease Ontology Description A syndromic X-linked intellectual disability characterized by severe intellectual deficit, microcephaly, exotropia, distal muscle wasting and low digital arches that has_material_basis_in variation in chromosomal region Xq13-q22.