_:vb50941009 "A developmental and epileptic encephalopathy characterized by onset of seizures in infancy or early childhood, global developmental delay and variable intellectual disability that has_material_basis_in heterozygous mutation in the GABRB2 gene on chromosome 5q34."^^ . _:vb50941009 . _:vb50941009 "url:https://www.ncbi.nlm.nih.gov/pubmed/29100083"^^ . _:vb50941009 . _:vb50941009 . _:vb50941009 . _:vb50941009 "url:https://www.ncbi.nlm.nih.gov/pubmed/25124326"^^ . _:vb50941009 .