NCIt definition : An autosomal recessive condition caused by mutation(s) in the CNTNAP2 gene, encoding
contactin-associated protein-like 2. It is characterized by normal development until
the onset of intractable focal seizures at age 1-9. After the onset of seizures, language
regression, intellectual disability, hyperactivity, and impulsive behaviors begin
to occur. The majority of children eventually fulfill the criteria for autism spectrum
disorder.;