Szt2 Mutation in a Boy With Intellectual Disability, Seizures and Autistic Features Publisher Pubmed



Kariminejad A¹ ; Yazdan H¹ ; Rahimian E² ; Kalhor Z^{1, 3} ; Fattahi Z^{1, 3} ; Zonooz MF¹ ; Najmabadi H^{1, 3} ; Ashrafi M⁴ Show Affiliations
Source: European Journal of Medical Genetics Published:2019

Abstract

The seizure threshold 2 (SZT2) gene has been shown to confer a low seizure threshold and may enhance epileptogenesis in mice. However, its biological function is still not known. Mutations in SZT2 have been reported in very few patients and features range from mild to moderate intellectual disability without seizures to severe intellectual disability with epileptic encephalopathies with severe developmental delay. Here, we report a six-year-old boy with a novel homozygous mutation in SZT2 gene with intellectual disability, seizures, absent speech and autistic features. We are reporting the first patient with autistic features including very little or no eye contact, arm flapping and repetitive behaviour. © 2018 Elsevier Masson SAS