John Libbey Eurotext

Epileptic Disorders

The Educational Journal of the International League Against Epilepsy

Benign infantile seizures followed by autistic regression in a boy with 16p11.2 deletion Volume 19, issue 2, June 2017

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Authors
1 Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, Pisa
2 Lab of Medical Genetics, AOU Pisana, Ospedale S. Chiara, Pisa
3 Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, Pisa, Italy
* Correspondence: Federico Sicca Clinical Neurophysiology and Molecular Medicine Laboratories, Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, Via dei Giacinti, 2, Calambrone, 56128 Pisa, Italy
  • Key words: benign infantile seizure, 16p11.2 deletion, PRRT2, autism, regression
  • DOI : 10.1684/epd.2017.0909
  • Page(s) : 222-5
  • Published in: 2017

Benign infantile seizures (BIS) are usually a self-limiting condition, which may be associated with heterozygous mutations in the PRRT2 gene at chromosome 16p11.2. Here, we report a boy with a deletion in 16p11.2, presenting with BIS and typical neurodevelopment in the first year of life, unexpectedly followed by severe autistic regression. 16p11.2 deletions are typically associated with intellectual disability, autism, and language disorders, and only rarely with BIS. This clinical report shows that the neurodevelopmental prognosis in BIS patients may not always be benign, and suggests that array CGH screening should be considered for affected infants in order to rule out deletions at 16p11.2 and long-term clinical follow-up.