Recently defined epileptic encephalopathy related to WWOX gene mutation: six patients and new mutations.

Purpose: Pathogenic variants of the WWOX gene have been linked to sexual differentiation disorders, spinocerebellar ataxia, and epileptic encephalopathy (EE). We evaluated the clinical and molecular data from six newly diagnosed patients with WWOX-related EE.Methods: Clinical and molecular findings in six patients with EE were investigated, and biallelic pathogenic variants in the WWOX gene were identified. Clinical exome sequencing and Sanger sequencing were performed.Results: Three variations, as well as two novel mutations, in the WWOX gene were detected.Conclusion: Pathogenic WWOX mutations are associated with early-onset EE. Here, we report the case of six children with WWOX-related EE.