title: Complex single gene disorders and epilepsy.
abstract: Epilepsy is a heterogeneous group of disorders, often associated with significant comorbidity, such as intellectual disability and skin disorder. The genetic underpinnings of many epilepsies are still being elucidated, and we expect further advances over the coming 5 years, as genetic technology improves and prices fall for whole exome and whole genome sequencing. At present, there are several well-characterized complex epilepsies associated with single gene disorders; we review some of these here. They include well-recognized syndromes such as tuberous sclerosis complex, epilepsy associated with Rett syndrome, some of the progressive myoclonic epilepsies, and novel disorders such as epilepsy associated with mutations in the PCDH 19 gene. These disorders are important in informing genetic testing to confirm a diagnosis and to permit better understanding of the variability in phenotype-genotype correlation.
authors.affiliation: Epilepsy Programme, Department of Neurology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland.
authors.forename: Aine
authors.initials: A
authors.lastname: Merwick
authors.forename: Margaret
authors.initials: M
authors.lastname: O'Brien
authors.forename: Norman
authors.initials: N
authors.lastname: Delanty
mesh_terms: D017204:Angelman Syndrome / Q000150:complications / Q000235:genetics; D015820:Cadherins / Q000235:genetics; D054221:Classical Lissencephalies and Subcortical Band Heterotopias / Q000150:complications / Q000235:genetics; D004827:Epilepsy / Q000188:drug therapy / Q000209:etiology* / Q000235:genetics*; D030342:Genetic Diseases, Inborn / Q000150:complications* / Q000235:genetics* / Q000628:therapy; D040181:Genetic Diseases, X-Linked / Q000150:complications / Q000235:genetics; D006801:Humans; D020192:Lafora Disease / Q000150:complications / Q000235:genetics; D017243:MERRF Syndrome / Q000150:complications / Q000235:genetics; D017253:Neurofibromatoses / Q000150:complications / Q000235:genetics; D000091363:Protocadherins; D015518:Rett Syndrome / Q000150:complications / Q000235:genetics; D014402:Tuberous Sclerosis / Q000150:complications / Q000235:genetics; D020194:Unverricht-Lundborg Syndrome / Q000150:complications / Q000235:genetics
chemical_list: D015820:Cadherins; C438605:PCDH19 protein, human; D000091363:Protocadherins