NCIt definition : An autosomal recessive condition caused by mutation(s) in the DCHS1 gene, encoding
protocadherin-16. It is characterized by intellectual disability, typical craniofacial
features, auditory malformations resulting in hearing loss, skeletal and limb malformations,
and may include renal hypoplasia. Periventricular nodular heterotopia is often noted
on MRI.;