De novo loss- or gain-of-function mutations in KCNA2 cause epileptic encephalopathy
| Autor: | Syrbe, Steffen, Hedrich, Ulrike B S, Arslan, Mutluay, Serratosa, José M, Nothnagel, Michael, May, Patrick, Krause, Roland, Löffler, Heidrun, Detert, Katja, Dorn, Thomas, Vogt, Heinrich, Krämer, Günter, Riesch, Erik, Schöls, Ludger, Mullis, Primus E, Linnankivi, Tarja, Lehesjoki, Anna-Elina, Sterbova, Katalin, Craiu, Dana C, Hoffman-Zacharska, Dorota, Korff, Christian M, Weber, Yvonne G, Steinlin, Maja, Djémié, Tania, Gallati, Sabina, Bertsche, Astrid, Bernhard, Matthias K, Merkenschlager, Andreas, Kiess, Wieland, consortium, EuroEPINOMICS RES, Gonzalez, Michael, Züchner, Stephan, Palotie, Aarno, Suls, Arvid, Müller, Stephan, De Jonghe, Peter, Helbig, Ingo, Biskup, Saskia, Wolff, Markus, Maljevic, Snezana, Schüle, Rebecca, Sisodiya, Sanjay M, Weckhuysen, Sarah, Lerche, Holger, Lemke, Johannes R, Møller, Rikke S, Balling, Rudi, Barisic, Nina, Baulac, Stéphanie, Caglayan, Hande S, Depienne, Christel, Gormley, Padhraig, Guerrini, Renzo, Maher, Bridget, Hjalgrim, Helle, Jähn, Johanna, Klein, Karl Martin, Koeleman, Bobby P C, Komarek, Vladimir, LeGuern, Eric, Hernandez-Hernandez, Laura, Marini, Carla, Muhle, Hiltrud, Pal, Deb, Rosenow, Felix, Selmer, Kaja, Synofzik, Matthis, Stephani, Ulrich, Striano, Pasquale, Talvik, Tiina, von Spiczak, Sarah, Zara, Federico |
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| Přispěvatelé: | EuroEPINOMICS RES Consortium |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Ataxia genetics [Epilepsy] genetics [Kv1.2 Potassium Channel] Biology medicine.disease_cause Bioinformatics Infantile Epilepsy/genetics Article Spasms Cohort Studies Epilepsy Young Adult Spasms Infantile/genetics ddc:570 Amino Acid Sequence Child Child Preschool Female Genetic Predisposition to Disease Humans Infant Kv1.2 Potassium Channel Pedigree Spasms Infantile Mutation Genetics Intellectual disability medicine KCNA2 protein human Preschool Loss function Kv1.2 Potassium Channel/genetics ddc:618 Genetic heterogeneity Seizure types genetics [Spasms Infantile] medicine.disease Myoclonic epilepsy Human medicine medicine.symptom |
| Zdroj: | Nature genetics Nature genetics 47(4), 393-399 (2015). doi:10.1038/ng.3239 Nature Genetics Syrbe, S, Hedrich, U B S, Riesch, E, Djémié, T, Müller, S, Møller, R S, Maher, B, Hernandez-Hernandez, L, Synofzik, M, Caglayan, H S, Arslan, M, Serratosa, J M, Nothnagel, M, May, P, Krause, R, Löffler, H, Detert, K, Dorn, T, Vogt, H, Krämer, G, Schöls, L, Mullis, P E, Linnankivi, T, Lehesjoki, A-E, Sterbova, K, Craiu, D C, Hoffman-Zacharska, D, Korff, C M, Weber, Y G, Steinlin, M, Gallati, S, Bertsche, A, Bernhard, M K, Merkenschlager, A, Kiess, W, Gonzalez, M, Züchner, S, Palotie, A, Suls, A, De Jonghe, P, Helbig, I, Biskup, S, Wolff, M, Maljevic, S, Schüle, R, Sisodiya, S M, Weckhuysen, S, Lerche, H, Lemke, J R & EuroEPINOMICS RES Consortium 2015, ' De novo loss-or gain-of-function mutations in KCNA2 cause epileptic encephalopathy ', Nature Genetics, vol. 47, no. 4, pp. 393–399 . https://doi.org/10.1038/ng.3239 Nature Genetics, Vol. 47, No 4 (2015) pp. 393-399 |
| ISSN: | 1546-1718 1061-4036 |
| DOI: | 10.1038/ng.3239 |
| Popis: | Epileptic encephalopathies are a phenotypically and genetically heterogeneous group of severe epilepsies accompanied by intellectual disability and other neurodevelopmental features(1-6). Using next-generation sequencing, we identified four different de novo mutations in KCNA2, encoding the potassium channel K(V)1.2, in six isolated patients with epileptic encephalopathy (one mutation recurred three times independently). Four individuals presented with febrile and multiple afebrile, often focal seizure types, multifocal epileptiform discharges strongly activated by sleep, mild to moderate intellectual disability, delayed speech development and sometimes ataxia. Functional studies of the two mutations associated with this phenotype showed almost complete loss of function with a dominant-negative effect. Two further individuals presented with a different and more severe epileptic encephalopathy phenotype. They carried mutations inducing a drastic gain-of-function effect leading to permanently open channels. These results establish KCNA2 as a new gene involved in human neurodevelopmental disorders through two different mechanisms, predicting either hyperexcitability or electrical silencing of K(V)1.2-expressing neurons. |
| Databáze: | OpenAIRE |
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