Mondo Description X-linked intellectual disability, Cabezas type is characterised by intellectual deficit, muscle wasting, short stature, a prominent lower lip, small testes, kyphosis and joint hyperextensibility. An abnormal gait, tremor, decreased fine motor coordination and impaired speech are also present. The syndrome has been described in six boys from three generations of the same family. Transmission is X-linked and the causative gene has been localised to the q24-q25 region of the X chromosome.

Uniprot Description A syndromic form of X-linked mental retardation characterized by severe intellectual deficit associated with short stature, craniofacial dysmorphism, small testes, muscle wasting in lower legs, kyphosis, joint hyperextensibility, pes cavus, small feet, and abnormalities of the toes. Additional neurologic manifestations include speech delay and impairment, tremor, seizures, gait ataxia, hyperactivity and decreased attention span.

Disease Ontology Description A syndromic X-linked intellectual disability characterized by intellectual deficit, muscle wasting, short stature, hypogonadism, and bnormal gait, with variable occurrence of prominent lower lip, kyphosis, joint hyperextensibility, tremor, decreased fine motor coordination and impaired speech that has_material_basis_in mutation in the CUL4B gene on chromosome Xq23.