Search

Your search keyword '"Lerche, Holger"' showing total 200 results
Start Over Author "Lerche, Holger" Publication Year Range Last 3 years
200 results on '"Lerche, Holger"'

3. Current practice in diagnostic genetic testing of the epilepsies.

Author

Krey, Ilona, Platzer, Konrad, Esterhuizen, Alina, Berkovic, Samuel, Helbig, Ingo, Hildebrand, Michael, Lerche, Holger, Møller, Rikke, Poduri, Annapurna, Sadleir, Lynette, Sisodiya, Sanjay, Weckhuysen, Sarah, Wilmshurst, Jo, Weber, Yvonne, Lemke, Johannes, Cross, J, Lowenstein, Daniel, Mefford, Heathea, Perucca, Piero, Tan, Nigel, Caglayan, Hande, Helbig, Katherine, and Singh, Gagandeep

Subjects
genetic epilepsy, next-generation sequencing, genetic counseling genetic testing, variant of uncertain significance, precision medicine, Diagnostic Techniques and Procedures, Epilepsy, Genetic Testing, Humans
Abstract

Epilepsy genetics is a rapidly developing field, in which novel disease-associated genes, novel mechanisms associated with epilepsy, and precision medicine approaches are continuously being identified. In the past decade, advances in genomic knowledge and analysis platforms have begun to make clinical genetic testing accessible for, in principle, people of all ages with epilepsy. For this reason, the Genetics Commission of the International League Against Epilepsy (ILAE) presents this update on clinical genetic testing practice, including current techniques, indications, yield of genetic testing, recommendations for pre- and post-test counseling, and follow-up after genetic testing is completed. We acknowledge that the resources vary across different settings but highlight that genetic diagnostic testing for epilepsy should be prioritized when the likelihood of an informative finding is high. Results of genetic testing, in particular the identification of causative genetic variants, are likely to improve individual care. We emphasize the importance of genetic testing for individuals with epilepsy as we enter the era of precision therapy.

Published
2022

4. Precision medicine for genetic epilepsy on the horizon: Recent advances, present challenges, and suggestions for continued progress

Author

Knowles, Juliet K, Helbig, Ingo, Metcalf, Cameron S, Lubbers, Laura S, Isom, Lori L, Demarest, Scott, Goldberg, Ethan M, George, Alfred L, Lerche, Holger, Weckhuysen, Sarah, Whittemore, Vicky, Berkovic, Samuel F, and Lowenstein, Daniel H

Subjects
Biomedical and Clinical Sciences, Neurosciences, Clinical Sciences, Clinical Research, Brain Disorders, Neurodegenerative, Epilepsy, Neurological, Good Health and Well Being, Genetic Testing, Humans, Precision Medicine, Seizures, Suggestion, epilepsy, exome sequencing, genomic medicine, personalized medicine, precision medicine, Neurology & Neurosurgery, Clinical sciences
Abstract

The genetic basis of many epilepsies is increasingly understood, giving rise to the possibility of precision treatments tailored to specific genetic etiologies. Despite this, current medical therapy for most epilepsies remains imprecise, aimed primarily at empirical seizure reduction rather than targeting specific disease processes. Intellectual and technological leaps in diagnosis over the past 10 years have not yet translated to routine changes in clinical practice. However, the epilepsy community is poised to make impressive gains in precision therapy, with continued innovation in gene discovery, diagnostic ability, and bioinformatics; increased access to genetic testing and counseling; fuller understanding of natural histories; agility and rigor in preclinical research, including strategic use of emerging model systems; and engagement of an evolving group of stakeholders (including patient advocates, governmental resources, and clinicians and scientists in academia and industry). In each of these areas, we highlight notable examples of recent progress, new or persistent challenges, and future directions. The future of precision medicine for genetic epilepsy looks bright if key opportunities on the horizon can be pursued with strategic and coordinated effort.

Published
2022

5. Ictal Electroencephalographic Characteristics of Nodding Syndrome: A Comparative Case‐Series from South Sudan, Tanzania, and Uganda

Author

Mazumder, Rajarshi, Lagoro, David Kitara, Nariai, Hiroki, Danieli, Alberto, Eliashiv, Dawn, Engel, Jerome, Bernardina, Bernardo Dalla, Kegele, Josua, Lerche, Holger, Sejvar, James, Matuja, William, Schmutzhard, Erich, Bonanni, Paolo, De Polo, Gianni, Wagner, Thomas, and Winkler, Andrea Sylvia

Subjects
Neurosciences, Mental Health, Brain Disorders, Pediatric, Clinical Research, Good Health and Well Being, Electroencephalography, Humans, Nodding Syndrome, South Sudan, Tanzania, Uganda, Clinical Sciences, Neurology & Neurosurgery
Abstract

Nodding syndrome (NS) is a poorly understood form of childhood-onset epilepsy that is characterized by the pathognomonic ictal phenomenon of repetitive vertical head drops. To evaluate the underlying ictal neurophysiology, ictal EEG features were evaluated in nine participants with confirmed NS from South Sudan, Tanzania, and Uganda and ictal presence of high frequency gamma oscillations on scalp EEG were assessed. Ictal EEG during the head nodding episode predominantly showed generalized slow waves or sharp-and-slow wave complexes followed by electrodecrement. Augmentation of gamma activity (30-70 Hz) was seen during the head nodding episode in all the participants. We confirm that head nodding episodes in persons with NS from the three geographically distinct regions in sub-Saharan Africa share the common features of slow waves with electrodecrement and superimposed gamma activity. ANN NEUROL 2022;92:75-80.

Published
2022

6. Missense variants in ANO4 cause sporadic encephalopathic or familial epilepsy with evidence for a dominant-negative effect

Author

Yang, Fang, Begemann, Anais, Reichhart, Nadine, Haeckel, Akvile, Steindl, Katharina, Schellenberger, Eyk, Sturm, Ronja Fini, Barth, Magalie, Bassani, Sissy, Boonsawat, Paranchai, Courtin, Thomas, Delobel, Bruno, Gunning, Boudewijn, Hardies, Katia, Jennesson, Mélanie, Legoff, Louis, Linnankivi, Tarja, Prouteau, Clément, Smal, Noor, Spodenkiewicz, Marta, Toelle, Sandra P., Van Gassen, Koen, Van Paesschen, Wim, Verbeek, Nienke, Ziegler, Alban, Zweier, Markus, Horn, Anselm H.C., Sticht, Heinrich, Lerche, Holger, Weckhuysen, Sarah, Strauß, Olaf, and Rauch, Anita

Published
2024
Full Text
View/download PDF

10. Distinct gene-set burden patterns underlie common generalized and focal epilepsies.

Author

Koko, Mahmoud, Krause, Roland, Sander, Thomas, Bobbili, Dheeraj, Nothnagel, Michael, May, Patrick, and Lerche, Holger

Subjects
Burden analysis, Epilepsy, Exome sequencing, Gene-sets, Ultra-rare variants, Case-Control Studies, Epilepsies, Partial, Epilepsy, Generalized, Exome, Female, Genetic Predisposition to Disease, Genetic Variation, Genome-Wide Association Study, Humans, Male, Exome Sequencing
Abstract

BACKGROUND: Analyses of few gene-sets in epilepsy showed a potential to unravel key disease associations. We set out to investigate the burden of ultra-rare variants (URVs) in a comprehensive range of biologically informed gene-sets presumed to be implicated in epileptogenesis. METHODS: The burden of 12 URV types in 92 gene-sets was compared between cases and controls using whole exome sequencing data from individuals of European descent with developmental and epileptic encephalopathies (DEE, n = 1,003), genetic generalized epilepsy (GGE, n = 3,064), or non-acquired focal epilepsy (NAFE, n = 3,522), collected by the Epi25 Collaborative, compared to 3,962 ancestry-matched controls. FINDINGS: Missense URVs in highly constrained regions were enriched in neuron-specific and developmental genes, whereas genes not expressed in brain were not affected. GGE featured a higher burden in gene-sets derived from inhibitory vs. excitatory neurons or associated receptors, whereas the opposite was found for NAFE, and DEE featured a burden in both. Top-ranked susceptibility genes from recent genome-wide association studies (GWAS) and gene-sets derived from generalized vs. focal epilepsies revealed specific enrichment patterns of URVs in GGE vs. NAFE. INTERPRETATION: Missense URVs affecting highly constrained sites differentially impact genes expressed in inhibitory vs. excitatory pathways in generalized vs. focal epilepsies. The excess of URVs in top-ranked GWAS risk-genes suggests a convergence of rare deleterious and common risk-variants in the pathogenesis of generalized and focal epilepsies. FUNDING: DFG Research Unit FOR-2715 (Germany), FNR (Luxembourg), NHGRI (US), NHLBI (US), DAAD (Germany).

Published
2021

11. Clinical and electrophysiological features of SCN8A variants causing episodic or chronic ataxia

Author

Lyu, Hang, Boßelmann, Christian M., Johannesen, Katrine M., Koko, Mahmoud, Ortigoza-Escobar, Juan Dario, Aguilera-Albesa, Sergio, Garcia-Navas Núñez, Deyanira, Linnankivi, Tarja, Gaily, Eija, van Ruiten, Henriette J.A., Richardson, Ruth, Betzler, Cornelia, Horvath, Gabriella, Brilstra, Eva, Geerdink, Niels, Orsucci, Daniele, Tessa, Alessandra, Gardella, Elena, Fleszar, Zofia, Schöls, Ludger, Lerche, Holger, Møller, Rikke S., and Liu, Yuanyuan

Published
2023
Full Text
View/download PDF

12. A Solve-RD ClinVar-based reanalysis of 1522 index cases from ERN-ITHACA reveals common pitfalls and misinterpretations in exome sequencing

Author

Abbott, Kristin M., Banka, Siddharth, de Boer, Elke, Ciolfi, Andrea, Clayton-Smith, Jill, Dallapiccola, Bruno, Denommé-Pichon, Anne-Sophie, Faivre, Laurence, Gilissen, Christian, Haack, Tobias B., Havlovicova, Marketa, Hoischen, Alexander, Jackson, Adam, Kerstjens, Mieke, Kleefstra, Tjitske, Martín, Estrella López, Macek, Milan, Jr., Matalonga, Leslie, Maystadt, Isabelle, Morleo, Manuela, Nigro, Vicenzo, Pinelli, Michele, Pizzi, Simone, Posada, Manuel, Radio, Francesca C., Renieri, Alessandra, Riess, Olaf, Rooryck, Caroline, Ryba, Lukas, Agathe, Jean-Madeleine de Sainte, Santen, Gijs W.E., Schwarz, Martin, Tartaglia, Marco, Thauvin, Christel, Torella, Annalaura, Trimouille, Aurélien, Verloes, Alain, Vissers, Lisenka, Vitobello, Antonio, Votypka, Pavel, Zguro, Kristina, Boer, Elke de, Cohen, Enzo, Danis, Daniel, Gao, Fei, Horvath, Rita, Johari, Mridul, Johanson, Lennart, Li, Shuang, Morsy, Heba, Nelson, Isabelle, Paramonov, Ida, te Paske, Iris B.A.W., Robinson, Peter, Savarese, Marco, Steyaert, Wouter, Töpf, Ana, van der Velde, Joeri K., Vandrovcova, Jana, Graessner, Holm, Zurek, Birte, Ellwanger, Kornelia, Ossowski, Stephan, Demidov, German, Sturm, Marc, Schulze-Hentrich, Julia M., Schüle, Rebecca, Xu, Jishu, Kessler, Christoph, Wayand, Melanie, Synofzik, Matthis, Wilke, Carlo, Traschütz, Andreas, Schöls, Ludger, Hengel, Holger, Lerche, Holger, Kegele, Josua, Heutink, Peter, Brunner, Han, Scheffer, Hans, Hoogerbrugge, Nicoline, ‘t Hoen, Peter A.C., Vissers, Lisenka E.L.M., Sablauskas, Karolis, de Voer, Richarda M., Kamsteeg, Erik-Jan, van de Warrenburg, Bart, van Os, Nienke, Paske, Iris te, Janssen, Erik, Steehouwer, Marloes, Yaldiz, Burcu, Brookes, Anthony J., Veal, Colin, Gibson, Spencer, Maddi, Vatsalya, Mehtarizadeh, Mehdi, Riaz, Umar, Warren, Greg, Dizjikan, Farid Yavari, Shorter, Thomas, Straub, Volker, Bettolo, Chiara Marini, Manera, Jordi Diaz, Hambleton, Sophie, Engelhardt, Karin, Alexander, Elizabeth, Duffourd, Yannis, Bruel, Ange-Line, Peyron, Christine, Pélissier, Aurore, Beltran, Sergi, Gut, Ivo Glynne, Laurie, Steven, Piscia, Davide, Papakonstantinou, Anastasios, Bullich, Gemma, Corvo, Alberto, Fernandez-Callejo, Marcos, Hernández, Carles, Picó, Daniel, Lochmüller, Hanns, Gumus, Gulcin, Bros-Facer, Virginie, Rath, Ana, Hanauer, Marc, Lagorce, David, Hongnat, Oscar, Chahdil, Maroua, Lebreton, Emeline, Stevanin, Giovanni, Durr, Alexandra, Davoine, Claire-Sophie, Guillot-Noel, Léna, Heinzmann, Anna, Coarelli, Giulia, Bonne, Gisèle, Evangelista, Teresinha, Allamand, Valérie, Ben Yaou, Rabah, Metay, Corinne, Eymard, Bruno, Atalaia, Antonio, Stojkovic, Tanya, Turnovec, Marek, Thomasová, Dana, Kremliková, Radka Pourová, Franková, Vera, Havlovicová, Markéta, Lišková, Petra, Doležalová, Pavla, Parkinson, Helen, Keane, Thomas, Freeberg, Mallory, Thomas, Coline, Spalding, Dylan, Robert, Glenn, Costa, Alessia, Patch, Christine, Hanna, Mike, Houlden, Henry, Reilly, Mary, Efthymiou, Stephanie, Cali, Elisa, Magrinelli, Francesca, Sisodiya, Sanjay M., Rohrer, Jonathan, Muntoni, Francesco, Zaharieva, Irina, Sarkozy, Anna, Timmerman, Vincent, Baets, Jonathan, de Vries, Geert, De Winter, Jonathan, Beijer, Danique, de Jonghe, Peter, Van de Vondel, Liedewei, De Ridder, Willem, Weckhuysen, Sarah, Nigro, Vincenzo, Mutarelli, Margherita, Varavallo, Alessandra, Banfi, Sandro, Musacchia, Francesco, Piluso, Giulio, Ferlini, Alessandra, Selvatici, Rita, Gualandi, Francesca, Bigoni, Stefania, Rossi, Rachele, Neri, Marcella, Aretz, Stefan, Spier, Isabel, Sommer, Anna Katharina, Peters, Sophia, Oliveira, Carla, Pelaez, Jose Garcia, Matos, Ana Rita, José, Celina São, Ferreira, Marta, Gullo, Irene, Fernandes, Susana, Garrido, Luzia, Ferreira, Pedro, Carneiro, Fátima, Swertz, Morris A., Johansson, Lennart, van der Vries, Gerben, Neerincx, Pieter B., Ruvolo, David, Kerstjens Frederikse, Wilhemina S., Zonneveld-Huijssoon, Eveline, Roelofs-Prins, Dieuwke, van Gijn, Marielle, Köhler, Sebastian, Metcalfe, Alison, Drunat, Séverine, Heron, Delphine, Mignot, Cyril, Keren, Boris, Lacombe, Didier, Trimouille, Aurelien, Capella, Gabriel, Valle, Laura, Holinski-Feder, Elke, Laner, Andreas, Steinke-Lange, Verena, Cilio, Maria-Roberta, Carpancea, Evelina, Depondt, Chantal, Lederer, Damien, Sznajer, Yves, Duerinckx, Sarah, Mary, Sandrine, Macaya, Alfons, Cazurro-Gutiérrez, Ana, Pérez-Dueñas, Belén, Munell, Francina, Jarava, Clara Franco, Masó, Laura Batlle, Marcé-Grau, Anna, Colobran, Roger, Hackman, Peter, Udd, Bjarne, Hemelsoet, Dimitri, Dermaut, Bart, Schuermans, Nika, Poppe, Bruce, Verdin, Hannah, Osorio, Andrés Nascimento, Depienne, Christel, Roos, Andreas, Cordts, Isabell, Deschauer, Marcus, Striano, Pasquale, Zara, Federico, Riva, Antonella, Iacomino, Michele, Uva, Paolo, Scala, Marcello, Scudieri, Paolo, Başak, Ayşe Nazlı, Claeys, Kristl, Boztug, Kaan, Haimel, Matthias, W.E, Gijs, Ruivenkamp, Claudia A.L., Natera de Benito, Daniel, Thompson, Rachel, Polavarapu, Kiran, Grimbacher, Bodo, Zaganas, Ioannis, Kokosali, Evgenia, Lambros, Mathioudakis, Evangeliou, Athanasios, Spilioti, Martha, Kapaki, Elisabeth, Bourbouli, Mara, Radio, Francesca Clementina, Balicza, Peter, Molnar, Maria Judit, De la Paz, Manuel Posada, Sánchez, Eva Bermejo, Delgado, Beatriz Martínez, Alonso García de la Rosa, F. Javier, Schröck, Evelin, Rump, Andreas, Mei, Davide, Vetro, Annalisa, Balestrini, Simona, Guerrini, Renzo, Chinnery, Patrick F., Ratnaike, Thiloka, Schon, Katherine, Maver, Ales, Peterlin, Borut, Münchau, Alexander, Lohmann, Katja, Herzog, Rebecca, Pauly, Martje, May, Patrick, Beeson, David, Cossins, Judith, Furini, Simone, Fallerini, Chiara, Benetti, Elisa, Afenjar, Alexandra, Goldenberg, Alice, Masurel, Alice, Phan, Alice, Dieux-Coeslier, Anne, Fargeot, Anne, Guerrot, Anne-Marie, Toutain, Annick, Molin, Arnaud, Sorlin, Arthur, Putoux, Audrey, Jouret, Béatrice, Laudier, Béatrice, Demeer, Bénédicte, Doray, Bérénice, Bonniaud, Bertille, Isidor, Bertrand, Gilbert-Dussardier, Brigitte, Leheup, Bruno, Reversade, Bruno, Paul, Carle, Vincent-Delorme, Catherine, Neiva, Cecilia, Poirsier, Céline, Quélin, Chloé, Chiaverini, Christine, Coubes, Christine, Francannet, Christine, Colson, Cindy, Desplantes, Claire, Wells, Constance, Goizet, Cyril, Sanlaville, Damien, Amram, Daniel, Lehalle, Daphné, Geneviève, David, Gaillard, Dominique, Zivi, Einat, Sarrazin, Elisabeth, Steichen, Elisabeth, Schaefer, Élise, Lacaze, Elodie, Jacquemin, Emmanuel, Bongers, Ernie, Kilic, Esra, Colin, Estelle, Giuliano, Fabienne, Prieur, Fabienne, Laffargue, Fanny, Morice-Picard, Fanny, Petit, Florence, Cartault, François, Feillet, François, Baujat, Geneviève, Morin, Gilles, Diene, Gwenaëlle, Journel, Hubert, Perthus, Isabelle, Lespinasse, James, Alessandri, Jean-Luc, Amiel, Jeanne, Martinovic, Jelena, Delanne, Julian, Albuisson, Juliette, Lambert, Laëtitia, Perrin, Laurence, Ousager, Lilian Bomme, Van Maldergem, Lionel, Pinson, Lucile, Ruaud, Lyse, Samimi, Mahtab, Bournez, Marie, Bonnet-Dupeyron, Marie Noëlle, Vincent, Marie, Jacquemont, Marie-Line, Cordier-Alex, Marie-Pierre, Gérard-Blanluet, Marion, Willems, Marjolaine, Spodenkiewicz, Marta, Doco-Fenzy, Martine, Rossi, Massimiliano, Renaud, Mathilde, Fradin, Mélanie, Mathieu, Michèle, Holder-Espinasse, Muriel H., Houcinat, Nada, Hanna, Nadine, Leperrier, Nathalie, Chassaing, Nicolas, Philip, Nicole, Boute, Odile, Van Kien, Philippe Khau, Parent, Philippe, Bitoun, Pierre, Sarda, Pierre, Vabres, Pierre, Jouk, Pierre-Simon, Touraine, Renaud, El Chehadeh, Salima, Whalen, Sandra, Marlin, Sandrine, Passemard, Sandrine, Grotto, Sarah, Bellanger, Séverine Audebert, Blesson, Sophie, Nambot, Sophie, Naudion, Sophie, Lyonnet, Stanislas, Odent, Sylvie, Attie-Bitach, Tania, Busa, Tiffany, Drouin-Garraud, Valérie, Layet, Valérie, Bizaoui, Varoona, Cusin, Véronica, Capri, Yline, Alembik, Yves, Jean-Marçais, Nolwenn, López-Martín, Estrella, Macek, Milan, Mencarelli, Maria Antonietta, Moutton, Sébastien, Pfundt, Rolph, Safraou, Hana, Thauvin-Robinet, Christel, Thevenon, Julien, Tran Mau-Them, Frédéric, de Vries, Bert B.A., Willemsen, Marjolein H., and Philippe, Christophe

Published
2023
Full Text
View/download PDF

15. Optimizing clinical interpretability of functional evidence in epilepsy-related ion channel variants

Author

Parthasarathy, Shridhar, primary, Cohen, Stacey R, additional, Fitch, Eryn, additional, Vaidiswaran, Priya, additional, Ruggiero, Sarah M, additional, Lusk, Laina, additional, Chisari, Victoria, additional, Lewis-Smith, David, additional, Lauxmann, Stephan, additional, Bosselmann, Christian M, additional, Thompson, Christopher H, additional, Wengert, Eric R, additional, Hedrich, Ulrike, additional, Ganesan, Shiva, additional, Balagura, Ganna, additional, Krause, Roland, additional, Xian, Julie, additional, Galer, Peter D, additional, Pendziwiat, Manuela, additional, Perez-Palma, Eduardo, additional, Vihinen, Mauno, additional, Hart, Jennifer, additional, Landrum, Melissa J, additional, Lal, Dennis, additional, Cooper, Edward C, additional, Lerche, Holger, additional, Goldberg, Ethan M, additional, Brunklaus, Andreas, additional, Vanoye, Carlos G, additional, Schorge, Stephanie, additional, George, Alfred L, additional, and Helbig, Ingo, additional

Published
2024
Full Text
View/download PDF

17. Electrophysiological signatures of a developmental delay in a stem cell model ofKCNQ2developmental and epileptic encephalopathy

Author

Rosa, Filip, primary, Theiss, Stephan, additional, Krepp, Susanne, additional, Loeffler, Heidi, additional, Mendes, Dulini, additional, Klingenstein, Stefanie, additional, Liebau, Stefan, additional, Weckhuysen, Sarah, additional, Alber, Michael, additional, Petrou, Steven, additional, Lerche, Holger, additional, Maljevic, Snezana, additional, and Wuttke, Thomas V, additional

Published
2024
Full Text
View/download PDF

18. Bi-allelic PRRT2 variants may predispose to Self-limited Familial Infantile Epilepsy

Author

Koko, Mahmoud, primary, Elseed, Maha A., additional, Mohammed, Inaam N., additional, Hamed, Ahlam A., additional, Abd Allah, Amal S. I., additional, Yahia, Ashraf, additional, Siddig, Rayan A., additional, Altmüller, Janine, additional, Toliat, Mohammad Reza, additional, Elmahdi, Esra O., additional, Amin, Mutaz, additional, Ahmed, Elhami A., additional, Eltazi, Isra Z. M., additional, Elmugadam, Fatima A., additional, Abdelgadir, Wasma A., additional, Eltaraifee, Esraa, additional, Ibrahim, Mohamed O. M., additional, Ali, Nabila M. H., additional, Malik, Hiba M., additional, Babai, Arwa M., additional, Bakhit, Yousuf H., additional, Nürnberg, Peter, additional, Ibrahim, Muntaser E., additional, Salih, Mustafa A., additional, Schubert, Julian, additional, Elsayed, Liena E. O., additional, and Lerche, Holger, additional

Published
2024
Full Text
View/download PDF

19. Complex biophysical changes and reduced neuronal firing in anSCN8Avariant associated with developmental delay and epilepsy

Author

Quinn, Shir, primary, Zhang, Nan, additional, Fenton, Timothy A., additional, Brusel, Marina, additional, Muruganandam, Preethi, additional, Peleg, Yoav, additional, Giladi, Moshe, additional, Haitin, Yoni, additional, Lerche, Holger, additional, Bassan, Haim, additional, Liu, Yuanyuan, additional, Ben-Shalom, Roy, additional, and Rubinstein, Moran, additional

Published
2023
Full Text
View/download PDF

21. Heterozygous UCHL1 loss-of-function variants cause a neurodegenerative disorder with spasticity, ataxia, neuropathy, and optic atrophy

Author

Park, Joohyun, primary, Tucci, Arianna, additional, Cipriani, Valentina, additional, Demidov, German, additional, Rocca, Clarissa, additional, Senderek, Jan, additional, Butryn, Michaela, additional, Velic, Ana, additional, Lam, Tanya, additional, Galanaki, Evangelia, additional, Cali, Elisa, additional, Vestito, Letizia, additional, Maroofian, Reza, additional, Deininger, Natalie, additional, Rautenberg, Maren, additional, Admard, Jakob, additional, Hahn, Gesa-Astrid, additional, Bartels, Claudius, additional, van Os, Nienke J.H., additional, Horvath, Rita, additional, Chinnery, Patrick F., additional, Tiet, May Yung, additional, Hewamadduma, Channa, additional, Hadjivassiliou, Marios, additional, Downes, Susan M., additional, Németh, Andrea H., additional, Tofaris, George K., additional, Wood, Nicholas W., additional, Hayer, Stefanie N., additional, Bender, Friedemann, additional, Menden, Benita, additional, Cordts, Isabell, additional, Klein, Katrin, additional, Nguyen, Huu Phuc, additional, Krauss, Joachim K., additional, Blahak, Christian, additional, Strom, Tim M., additional, Sturm, Marc, additional, van de Warrenburg, Bart, additional, Lerche, Holger, additional, Maček, Boris, additional, Synofzik, Matthis, additional, Ossowski, Stephan, additional, Timmann, Dagmar, additional, Wolf, Marc E., additional, Smedley, Damian, additional, Riess, Olaf, additional, Schöls, Ludger, additional, Houlden, Henry, additional, Haack, Tobias B., additional, and Hengel, Holger, additional

Published
2023
Full Text
View/download PDF

22. Hyperexcitable interneurons trigger cortical spreading depression in an Scn1a migraine model

Author

Auffenberg, Eva, Hedrich, Ulrike B.S., Barbieri, Raffaella, Miely, Daniela, Groschup, Bernhard, Wuttke, Thomas V., Vogel, Niklas, Luhrs, Philipp, Zanardi, Ilaria, Bertelli, Sara, Spielmann, Nadine, Gailus-Durner, Valerie, Fuchs, Helmut, de Angelis, Martin Hrabe, Pusch, Michael, Dichgans, Martin, Lerche, Holger, Gavazzo, Paola, Plesnila, Nikolaus, and Freilinger, Tobias

Subjects
Cerebral cortex -- Physiological aspects -- Health aspects, Neural oscillations -- Health aspects -- Genetic aspects, Migraine -- Models -- Genetic aspects -- Physiological aspects, Neural transmission -- Health aspects -- Genetic aspects, Health care industry
Abstract

Cortical spreading depression (CSD), a wave of depolarization followed by depression of cortical activity, is a pathophysiological process implicated in migraine with aura and various other brain pathologies, such as ischemic stroke and traumatic brain injury. To gain insight into the pathophysiology of CSD, we generated a mouse model for a severe monogenic subtype of migraine with aura, familial hemiplegic migraine type 3 (FHM3). FHM3 is caused by mutations in SCN1A, encoding the voltage-gated [Na.sup.+] channel [Na.sub.V]1.1 predominantly expressed in inhibitory interneurons. Homozygous [Scn1a.sup.L1649Q] knock-in mice died prematurely, whereas heterozygous mice had a normal lifespan. Heterozygous [Scn1a.sup.L1649Q] knock-in mice compared with WT mice displayed a significantly enhanced susceptibility to CSD. We found L1649Q to cause a gain-of-function effect with an impaired [Na.sup.+]*-channel inactivation and increased ramp [Na.sup.+] currents leading to hyperactivity of fast-spiking inhibitory interneurons. Brain slice recordings using [K.sup.+]-sensitive electrodes revealed an increase in extracellular [K.sup.+] in the early phase of CSD in heterozygous mice, likely representing the mechanistic link between interneuron hyperactivity and CSD initiation. The neuronal phenotype and premature death of homozygous [Scn1a.sup.L1649Q] knock-in mice was partially rescued by GS967, a blocker of persistent [Na.sup.+] currents. Collectively, our findings identify interneuron hyperactivity as a mechanism to trigger CSD., Introduction With a prevalence of 10% to 15% in the general population, migraine is one of the most common neurological diseases (1, 2) and is rated as one of the [...]

Published
2021
Full Text
View/download PDF

25. Clinical and electrophysiological features of SCN8A variants causing episodic or chronic ataxia

Author

Lyu, Hang, primary, Bosselmann, Christian M, additional, Johannesen, Katrine M, additional, Koko, Mahmoud E., additional, Ortigoza-Escobar, Juan Dario, additional, Aguilera-Albesa, Sergio, additional, Garcia-Navas Nunez, Deyanira, additional, Linnankivi, Tarja, additional, Gaily, Eija, additional, van Ruiten, Henriette JA, additional, Richardson, Ruth, additional, Betzler, Cornelia, additional, Horvath, Gabriella, additional, Brilstra, Eva, additional, Geerdink, Niels, additional, Orsucci, Daniele, additional, Tessa, Alessandra, additional, Gardella, Elena, additional, Fleszar, Zofia, additional, Schoels, Ludger, additional, Lerche, Holger, additional, Moeller, Rikke S, additional, and Liu, Yuanyuan, additional

Published
2023
Full Text
View/download PDF

26. Bi-allelic PRRT2variants may predispose to Self-limited Familial Infantile Epilepsy

Author

Koko, Mahmoud, Elseed, Maha A., Mohammed, Inaam N., Hamed, Ahlam A., Abd Allah, Amal S. I., Yahia, Ashraf, Siddig, Rayan A., Altmüller, Janine, Toliat, Mohammad Reza, Elmahdi, Esra O., Amin, Mutaz, Ahmed, Elhami A., Eltazi, Isra Z. M., Elmugadam, Fatima A., Abdelgadir, Wasma A., Eltaraifee, Esraa, Ibrahim, Mohamed O. M., Ali, Nabila M. H., Malik, Hiba M., Babai, Arwa M., Bakhit, Yousuf H., Nürnberg, Peter, Ibrahim, Muntaser E., Salih, Mustafa A., Schubert, Julian, Elsayed, Liena E. O., and Lerche, Holger

Abstract

Heterozygous PRRT2variants are frequently implicated in Self-limited Infantile Epilepsy, whereas homozygous variants are so far linked to severe presentations including developmental and epileptic encephalopathy, movement disorders, and intellectual disability. In a study aiming to explore the genetics of epilepsy in the Sudanese population, we investigated several families including a consanguineous family with three siblings diagnosed with self-limited infantile epilepsy. We evaluated both dominant and recessive inheritance using whole exome sequencing and genomic arrays. We identified a pathogenic homozygous splice-site variant in the first intron of PRRT2[NC_000016.10(NM_145239.3):c.-65-1G > A] that segregated with the phenotype in this family. This work taps into the genetics of epilepsy in an underrepresented African population and suggests that the phenotypes of homozygous PRRT2variants may include milder epilepsy presentations without movement disorders.

Published
2024
Full Text
View/download PDF

27. GAA-FGF14 ataxia (SCA27B): phenotypic profile, natural history progression and 4-aminopyridine treatment response.

Author

Wilke, Carlo, Pellerin, David, Mengel, David, Traschütz, Andreas, Danzi, Matt C, Dicaire, Marie-Josée, Neumann, Manuela, Lerche, Holger, Bender, Benjamin, Houlden, Henry, group, RFC1 study, Züchner, Stephan, Schöls, Ludger, Brais, Bernard, and Synofzik, Matthis

Subjects
SPINOCEREBELLAR ataxia, PROGRESSIVE supranuclear palsy, NATURAL history, ATAXIA, PHENOTYPES
Abstract

Ataxia due to an autosomal dominant intronic GAA repeat expansion in FGF14 [GAA- FGF14 ataxia, spinocerebellar ataxia 27B (SCA27B)] has recently been identified as one of the most common genetic late-onset ataxias. We here aimed to characterize its phenotypic profile, natural history progression, and 4-aminopyridine (4-AP) treatment response. We conducted a multi-modal cohort study of 50 GAA- FGF14 patients, comprising in-depth phenotyping, cross-sectional and longitudinal progression data (up to 7 years), MRI findings, serum neurofilament light (sNfL) levels, neuropathology, and 4-AP treatment response data, including a series of n -of-1 treatment studies. GAA- FGF14 ataxia consistently presented as late-onset [60.0 years (53.5–68.5), median (interquartile range)] pancerebellar syndrome, partly combined with afferent sensory deficits (55%) and dysautonomia (28%). Dysautonomia increased with duration while cognitive impairment remained infrequent, even in advanced stages. Cross-sectional and longitudinal assessments consistently indicated mild progression of ataxia [0.29 Scale for the Assessment and Rating of Ataxia (SARA) points/year], not exceeding a moderate disease severity even in advanced stages (maximum SARA score: 18 points). Functional impairment increased relatively slowly (unilateral mobility aids after 8 years in 50% of patients). Corresponding to slow progression and low extra-cerebellar involvement, sNfL was not increased relative to controls. Concurrent second diseases (including progressive supranuclear palsy neuropathology) represented major individual aggravators of disease severity, constituting important caveats for planning future GAA- FGF14 trials. A treatment response to 4-AP with relevance for everyday living was reported by 86% of treated patients. A series of three prospective n -of-1 treatment experiences with on/off design showed marked reduction in daily symptomatic time and symptom severity on 4-AP. Our study characterizes the phenotypic profile, natural history progression, and 4-AP treatment response of GAA- FGF14 ataxia. It paves the way towards large-scale natural history studies and 4-AP treatment trials in this newly discovered, possibly most frequent, and treatable late-onset ataxia. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

28. Twist exome capture allows for lower average sequence coverage in clinical exome sequencing

Author

Yaldiz, Burcu, Kucuk, Erdi, Hampstead, Juliet, Hofste, Tom, Pfundt, Rolph, Corominas Galbany, Jordi, Rinne, Tuula, Yntema, Helger G., Hoischen, Alexander, Nelen, Marcel, Gilissen, Christian, consortium, Solve-R. D., Riess, Olaf, Haack, Tobias B., Graessner, Holm, Zurek, Birte, Ellwanger, Kornelia, Ossowski, Stephan, Demidov, German, Sturm, Marc, Schulze-Hentrich, Julia M., Schüle, Rebecca, Xu, Jishu, Kessler, Christoph, Wayand, Melanie, Synofzik, Matthis, Wilke, Carlo, Traschütz, Andreas, Schöls, Ludger, Hengel, Holger, Lerche, Holger, Kegele, Josua, Heutink, Peter, Brunner, Han, Scheffer, Hans, Hoogerbrugge, Nicoline, Hoen, Peter A. C. T, Vissers, Lisenka E. L. M., Steyaert, Wouter, Sablauskas, Karolis, de Voer, Richarda M., Kamsteeg, Erik-Jan, van de Warrenburg, Bart, van Os, Nienke, te Paske, Iris, Janssen, Erik, de Boer, Elke, Steehouwer, Marloes, Kleefstra, Tjitske, Brookes, Anthony J., Veal, Colin, Gibson, Spencer, Maddi, Vatsalya, Mehtarizadeh, Mehdi, Riaz, Umar, Warren, Greg, Dizjikan, Farid Yavari, Shorter, Thomas, Töpf, Ana, Straub, Volker, Bettolo, Chiara Marini, Manera, Jordi Diaz, Hambleton, Sophie, Engelhardt, Karin, Clayton-Smith, Jill, Banka, Siddharth, Alexander, Elizabeth, Jackson, Adam, Faivre, Laurence, Thauvin, Christel, Vitobello, Antonio, Denommé-Pichon, Anne-Sophie, Duffourd, Yannis, Bruel, Ange-Line, Peyron, Christine, Pélissier, Aurore, Beltran, Sergi, Gut, Ivo Glynne, Laurie, Steven, Piscia, Davide, Matalonga, Leslie, Papakonstantinou, Anastasios, Bullich, Gemma, Corvo, Alberto, Fernandez-Callejo, Marcos, Hernández, Carles, Picó, Daniel, Paramonov, Ida, Lochmüller, Hanns, Gumus, Gulcin, Bros-Facer, Virginie, Rath, Ana, Hanauer, Marc, Lagorce, David, Hongnat, Oscar, Chahdil, Maroua, Lebreton, Emeline, Stevanin, Giovanni, Durr, Alexandra, Davoine, Claire-Sophie, Guillot-Noel, Léna, Heinzmann, Anna, Coarelli, Giulia, Bonne, Gisèle, Evangelista, Teresinha, Allamand, Valérie, Nelson, Isabelle, Yaou, Rabah Ben, Metay, Corinne, Eymard, Bruno, Cohen, Enzo, Atalaia, Antonio, Stojkovic, Tanya, Macek, Milan, Turnovec, Marek, Thomasová, Dana, Kremliková, Radka Pourová, Franková, Vera, Havlovicová, Markéta, Lišková, Petra, Doležalová, Pavla, Parkinson, Helen, Keane, Thomas, Freeberg, Mallory, Thomas, Coline, Spalding, Dylan, Robinson, Peter, Danis, Daniel, Robert, Glenn, Costa, Alessia, Patch, Christine, Hanna, Mike, Houlden, Henry, Reilly, Mary, Vandrovcova, Jana, Efthymiou, Stephanie, Morsy, Heba, Cali, Elisa, Magrinelli, Francesca, Sisodiya, Sanjay M., Rohrer, Jonathan, Muntoni, Francesco, Zaharieva, Irina, Sarkozy, Anna, Timmerman, Vincent, Baets, Jonathan, de Vries, Geert, De Winter, Jonathan, Beijer, Danique, de Jonghe, Peter, Van de Vondel, Liedewei, De Ridder, Willem, Weckhuysen, Sarah, Nigro, Vincenzo, Mutarelli, Margherita, Morleo, Manuela, Pinelli, Michele, Varavallo, Alessandra, Banfi, Sandro, Torella, Annalaura, Musacchia, Francesco, Piluso, Giulio, Ferlini, Alessandra, Selvatici, Rita, Gualandi, Francesca, Bigoni, Stefania, Rossi, Rachele, Neri, Marcella, Aretz, Stefan, Spier, Isabel, Sommer, Anna Katharina, Peters, Sophia, Oliveira, Carla, Pelaez, Jose Garcia, Matos, Ana Rita, José, Celina São, Ferreira, Marta, Gullo, Irene, Fernandes, Susana, Garrido, Luzia, Ferreira, Pedro, Carneiro, Fátima, Swertz, Morris A., Johansson, Lennart, van der Velde, Joeri K., van der Vries, Gerben, Neerincx, Pieter B., Ruvolo, David, Abbott, Kristin M., Frederikse, Wilhemina Skerstjens, Zonneveld-Huijssoon, Eveline, Roelofs-Prins, Dieuwke, van Gijn, Marielle, Köhler, Sebastian, Metcalfe, Alison, Verloes, Alain, Drunat, Séverine, Heron, Delphine, Mignot, Cyril, Keren, Boris, de Sainte Agathe, Jean-Madeleine, Rooryck, Caroline, Lacombe, Didier, Trimouille, Aurelien, De la Paz, Manuel Posada, Sánchez, Eva Bermejo, Martín, Estrella López, Delgado, Beatriz Martínez, de la Rosa, F. Javier Alonso García, Ciolfi, Andrea, Dallapiccola, Bruno, Pizzi, Simone, Radio, Francesca Clementina, Tartaglia, Marco, Renieri, Alessandra, Furini, Simone, Fallerini, Chiara, Benetti, Elisa, Balicza, Peter, Molnar, Maria Judit, Maver, Ales, Peterlin, Borut, Münchau, Alexander, Lohmann, Katja, Herzog, Rebecca, Pauly, Martje, Macaya, Alfons, Cazurro-Gutiérrez, Ana, Pérez-Dueñas, Belén, Munell, Francina, Jarava, Clara Franco, Masó, Laura Batlle, Marcé-Grau, Anna, Colobran, Roger, Osorio, Andrés Nascimento, de Benito, Daniel Natera, Thompson, Rachel, Polavarapu, Kiran, Grimbacher, Bodo, Beeson, David, Cossins, Judith, Hackman, Peter, Johari, Mridul, Savarese, Marco, Udd, Bjarne, Horvath, Rita, Chinnery, Patrick F., Ratnaike, Thiloka, Gao, Fei, Schon, Katherine, Capella, Gabriel, Valle, Laura, Holinski-Feder, Elke, Laner, Andreas, Steinke-Lange, Verena, Schröck, Evelin, Rump, Andreas, Başak, Ayşe Nazlı, Hemelsoet, Dimitri, Dermaut, Bart, Schuermans, Nika, Poppe, Bruce, Verdin, Hannah, Mei, Davide, Vetro, Annalisa, Balestrini, Simona, Guerrini, Renzo, Claeys, Kristl, Santen, Gijs W. E., Bijlsma, Emilia K., Hoffer, Mariette J. V., Ruivenkamp, Claudia A. L., Boztug, Kaan, Haimel, Matthias, Maystadt, Isabelle, Cordts, Isabelle, Deschauer, Marcus, Zaganas, Ioannis, Kokosali, Evgenia, Lambros, Mathioudakis, Evangeliou, Athanasios, Spilioti, Martha, Kapaki, Elisabeth, Bourbouli, Mara, Striano, Pasquale, Zara, Federico, Riva, Antonella, Iacomino, Michele, Uva, Paolo, Scala, Marcello, Scudieri, Paolo, Cilio, Maria-Roberta, Carpancea, Evelina, Depondt, Chantal, Lederer, Damien, Sznajer, Yves, Duerinckx, Sarah, Mary, Sandrine, Depienne, Christel, Roos, Andreas, May, Patrick, and Luxembourg Centre for Systems Biomedicine (LCSB): Bioinformatics Core (R. Schneider Group) [research center]

Subjects
Multidisciplinaire, généralités & autres [D99] [Sciences de la santé humaine], Genetics & genetic processes [F10] [Life sciences], Génétique & processus génétiques [F10] [Sciences du vivant], Multidisciplinary, general & others [D99] [Human health sciences]
Abstract

Background Exome and genome sequencing are the predominant techniques in the diagnosis and research of genetic disorders. Sufficient, uniform and reproducible/consistent sequence coverage is a main determinant for the sensitivity to detect single-nucleotide (SNVs) and copy number variants (CNVs). Here we compared the ability to obtain comprehensive exome coverage for recent exome capture kits and genome sequencing techniques. Results We compared three different widely used enrichment kits (Agilent SureSelect Human All Exon V5, Agilent SureSelect Human All Exon V7 and Twist Bioscience) as well as short-read and long-read WGS. We show that the Twist exome capture significantly improves complete coverage and coverage uniformity across coding regions compared to other exome capture kits. Twist performance is comparable to that of both short- and long-read whole genome sequencing. Additionally, we show that even at a reduced average coverage of 70× there is only minimal loss in sensitivity for SNV and CNV detection. Conclusion We conclude that exome sequencing with Twist represents a significant improvement and could be performed at lower sequence coverage compared to other exome capture techniques.

Published
2023

32. Real‐world data on cannabidiol treatment of various epilepsy subtypes: A retrospective, multicenter study

Author

Kühne, Fabienne, primary, Becker, Lena‐Luise, additional, Bast, Thomas, additional, Bertsche, Astrid, additional, Borggraefe, Ingo, additional, Boßelmann, Christian Malte, additional, Fahrbach, Jörg, additional, Hertzberg, Christoph, additional, Herz, Nina A., additional, Hirsch, Martin, additional, Holtkamp, Martin, additional, Janello, Christine, additional, Kluger, Gerhard Josef, additional, Kurlemann, Gerhard, additional, Lerche, Holger, additional, Makridis, Konstantin L., additional, von Podewils, Felix, additional, Pringsheim, Milka, additional, Schubert‐Bast, Susanne, additional, Schulz, Juliane, additional, Schulze‐Bonhage, Andreas, additional, Steinbart, David, additional, Steinhoff, Bernhard J., additional, Strzelczyk, Adam, additional, Syrbe, Steffen, additional, De Vries, Heike, additional, Wagner, Christiane, additional, Wagner, Johanna, additional, Wilken, Bernd, additional, Prager, Christine, additional, Klotz, Kerstin A., additional, and Kaindl, Angela M., additional

Published
2023
Full Text
View/download PDF

35. ILAE Genetics Literacy series: Progressive myoclonus epilepsies

Author

Cameron, Jillian M., Ellis, Colin A., Berkovic, Samuel F., Perucca, Piero, Cross, J. Helen, Lerche, Holger, Esterhuizen, Alina I., Lopes‐Cendes, Iscia, Tsai, Meng‐Han, Lowenstein, Daniel H., Tan, Nigel C. K., Helbig, Ingo, Mefford, Heather C., Brunklaus, Andreas, Lesca, Gaetan, Palmer, Elizabeth Emma, McTague, Amy, Fakhfakh, Faiza, Delanty, Norman, Lowenstein, Daniel H., Tan, Nigel C. K., and Esterhuizen, Alina I.

Abstract

Progressive Myoclonus Epilepsy (PME) is a rare epilepsy syndrome characterized by the development of progressively worsening myoclonus, ataxia, and seizures. A molecular diagnosis can now be established in approximately 80% of individuals with PME. Almost fifty genetic causes of PME have now been established, although some remain extremely rare. Herein, we provide a review of clinical phenotypes and genotypes of the more commonly encountered PMEs. Using an illustrative case example, we describe appropriate clinical investigation and therapeutic strategies to guide the management of this often relentlessly progressive and devastating epilepsy syndrome. This manuscript in the Genetic Literacy series maps to Learning Objective 1.2 of the ILAE Curriculum for Epileptology (Epileptic Disord. 2019;21:129).

Published
2023
Full Text
View/download PDF

37. Optically pumped magnetometers detect altered maximal muscle activity in neuromuscular disease

Author

Semeia, Lorenzo, primary, Middelmann, Thomas, additional, Baek, Sangyeob, additional, Sometti, Davide, additional, Chen, Hui, additional, Grimm, Alexander, additional, Lerche, Holger, additional, Martin, Pascal, additional, Kronlage, Cornelius, additional, Braun, Christoph, additional, Broser, Philip, additional, Siegel, Markus, additional, Breu, Maria-Sophie, additional, and Marquetand, Justus, additional

Published
2022
Full Text
View/download PDF

39. Heterozygous UCHL1 loss-of-function variants cause a neurodegenerative disorder with spasticity, ataxia, neuropathy, and optic atrophy

Author

Park, Joohyun, primary, Tucci, Arianna, additional, Cipriani, Valentina, additional, Demidov, German, additional, Rocca, Clarissa, additional, Senderek, Jan, additional, Butryn, Michaela, additional, Velic, Ana, additional, Lam, Tanya, additional, Galanaki, Evangelia, additional, Cali, Elisa, additional, Vestito, Letizia, additional, Maroofian, Reza, additional, Deininger, Natalie, additional, Rautenberg, Maren, additional, Admard, Jakob, additional, Hahn, Gesa-Astrid, additional, Bartels, Claudius, additional, van Os, Nienke J.H., additional, Horvath, Rita, additional, Chinnery, Patrick F., additional, Tiet, May Yung, additional, Hewamadduma, Channa, additional, Hadjivassiliou, Marios, additional, Tofaris, George K., additional, Wood, Nicholas W., additional, Hayer, Stefanie N., additional, Bender, Friedemann, additional, Menden, Benita, additional, Cordts, Isabell, additional, Klein, Katrin, additional, Nguyen, Huu Phuc, additional, Krauss, Joachim K., additional, Blahak, Christian, additional, Strom, Tim M., additional, Sturm, Marc, additional, van de Warrenburg, Bart, additional, Lerche, Holger, additional, Maček, Boris, additional, Synofzik, Matthis, additional, Ossowski, Stephan, additional, Timmann, Dagmar, additional, Wolf, Marc E., additional, Smedley, Damian, additional, Riess, Olaf, additional, Schöls, Ludger, additional, Houlden, Henry, additional, Haack, Tobias B., additional, Hengel, Holger, additional, Ambrose, J.C., additional, Arumugam, P., additional, Baple, E.L., additional, Bleda, M., additional, Boardman-Pretty, F., additional, Boissiere, J.M., additional, Boustred, C.R., additional, Brittain, H., additional, Caulfield, M.J., additional, Chan, G.C., additional, Craig, C.E.H., additional, Daugherty, L.C., additional, de Burca, A., additional, Devereau, A., additional, Elgar, G., additional, Foulger, R.E., additional, Fowler, T., additional, Furió-Tarí, P., additional, Hackett, J.M., additional, Halai, D., additional, Hamblin, A., additional, Henderson, S., additional, Holman, J.E., additional, Hubbard, T.J.P., additional, Ibáñez, K., additional, Jackson, R., additional, Jones, L.J., additional, Kasperaviciute, D., additional, Kayikci, M., additional, Lahnstein, L., additional, Lawson, K., additional, Leigh, S.E.A., additional, Leong, I.U.S., additional, Lopez, F.J., additional, Maleady-Crowe, F., additional, Mason, J., additional, McDonagh, E.M., additional, Moutsianas, L., additional, Mueller, M., additional, Murugaesu, N., additional, Need, A.C., additional, Odhams, C.A., additional, Patch, C., additional, Perez-Gil, D., additional, Polychronopoulos, D., additional, Pullinger, J., additional, Rahim, T., additional, Rendon, A., additional, Riesgo-Ferreiro, P., additional, Rogers, T., additional, Ryten, M., additional, Savage, K., additional, Sawant, K., additional, Scott, R.H., additional, Siddiq, A., additional, Sieghart, A., additional, Smedley, D., additional, Smith, K.R., additional, Sosinsky, A., additional, Spooner, W., additional, Stevens, H.E., additional, Stuckey, A., additional, Sultana, R., additional, Thomas, E.R.A., additional, Thompson, S.R., additional, Tregidgo, C., additional, Tucci, A., additional, Walsh, E., additional, Watters, S.A., additional, Welland, M.J., additional, Williams, E., additional, Witkowska, K., additional, Wood, S.M., additional, and Zarowiecki, M., additional

Published
2022
Full Text
View/download PDF

40. Loss-of-function variants in the KCNQ5 gene are implicated in genetic generalized epilepsies

Author

Krüger, Johanna, primary, Schubert, Julian, additional, Kegele, Josua, additional, Labalme, Audrey, additional, Mao, Miaomiao, additional, Heighway, Jacqueline, additional, Seebohm, Guiscard, additional, Yan, Pu, additional, Koko, Mahmoud, additional, Aslan-Kara, Kezban, additional, Caglayan, Hande, additional, Steinhoff, Bernhard J., additional, Weber, Yvonne G., additional, Keo-Kosal, Pascale, additional, Berkovic, Samuel F., additional, Hildebrand, Michael S., additional, Petrou, Steven, additional, Krause, Roland, additional, May, Patrick, additional, Lesca, Gaetan, additional, Maljevic, Snezana, additional, and Lerche, Holger, additional

Published
2022
Full Text
View/download PDF

41. The role of common genetic variation in presumed monogenic epilepsies

Author

Campbell, Ciarán, Leu, Costin, Feng, Yen-Chen Anne, Wolking, Stefan, Moreau, Claudia, Ellis, Colin, Ganesan, Shiva, Martins, Helena, Oliver, Karen, Boothman, Isabelle, Benson, Katherine, Molloy, Anne, Brody, Lawrence, Michaud, Jacques L., Hamdan, Fadi F., Minassian, Berge A., Lerche, Holger, Scheffer, Ingrid E., Sisodiya, Sanjay, Girard, Simon, Cosette, Patrick, Delanty, Norman, Lal, Dennis, Cavalleri, Gianpiero L., collaborative, Epi K., Consortium, Genomics England Research, Collaborative, The Epi, May, Patrick, Krause, Roland, Fonds National de la Recherche - FnR [sponsor], and Luxembourg Centre for Systems Biomedicine (LCSB): Bioinformatics Core (R. Schneider Group) [research center]

Subjects
Epilepsy, Neurologie [D14] [Sciences de la santé humaine], Neurology [D14] [Human health sciences], Genetic diagnostics, DEEs, Genetics & genetic processes [F10] [Life sciences], PRS, Génétique & processus génétiques [F10] [Sciences du vivant]
Abstract

Summary: Background The developmental and epileptic encephalopathies (DEEs) are the most severe group of epilepsies which co-present with developmental delay and intellectual disability (ID). DEEs usually occur in people without a family history of epilepsy and have emerged as primarily monogenic, with damaging rare mutations found in 50% of patients. Little is known about the genetic architecture of patients with DEEs in whom no pathogenic variant is identified. Polygenic risk scoring (PRS) is a method that measures a person's common genetic burden for a trait or condition. Here, we used PRS to test whether genetic burden for epilepsy is relevant in individuals with DEEs, and other forms of epilepsy with ID. Methods: Genetic data on 2,759 cases with DEEs, or epilepsy with ID presumed to have a monogenic basis, and 447,760 population-matched controls were analysed. We compared PRS for ‘all epilepsy’, ‘focal epilepsy’, and ‘genetic generalised epilepsy’ (GGE) between cases and controls. We performed pairwise comparisons between cases stratified for identifiable rare deleterious genetic variants and controls. Findings 0.0002) relative to controls, which explain between 0.08% and 3.3% of phenotypic variance. PRS was increased in cases both with and without an identified deleterious variant of major effect, and there was no significant difference in PRS between the two groups. Interpretation: We provide evidence that common genetic variation contributes to the aetiology of DEEs and other forms of epilepsy with ID, even when there is a known pathogenic variant of major effect. These results provide insight into the genetic underpinnings of the severe epilepsies and warrant a shift in our understanding of the aetiology of the DEEs as complex, rather than monogenic, disorders.

Published
2022

46. The role of common genetic variation in presumed monogenic epilepsies

Author

Campbell, Ciarán, primary, Leu, Costin, additional, Feng, Yen-Chen Anne, additional, Wolking, Stefan, additional, Moreau, Claudia, additional, Ellis, Colin, additional, Ganesan, Shiva, additional, Martins, Helena, additional, Oliver, Karen, additional, Boothman, Isabelle, additional, Benson, Katherine, additional, Molloy, Anne, additional, Brody, Lawrence, additional, Michaud, Jacques L., additional, Hamdan, Fadi F., additional, Minassian, Berge A., additional, Lerche, Holger, additional, Scheffer, Ingrid E., additional, Sisodiya, Sanjay, additional, Girard, Simon, additional, Cosette, Patrick, additional, Delanty, Norman, additional, Lal, Dennis, additional, and Cavalleri, Gianpiero L., additional

Published
2022
Full Text
View/download PDF

47. Mutations in plasticity-related-gene-1 (PRG-1) protein contribute to hippocampal seizure susceptibility and modify epileptic phenotype.

Author

Knierim, Ellen, Vogt, Johannes, Kintscher, Michael, Ponomarenko, Alexey, Baumgart, Jan, Beed, Prateep, Korotkova, Tatiana, Trimbuch, Thorsten, Panzer, Axel, Steinlein, Ortrud K, Stephani, Ulrich, Escayg, Andrew, Koko, Mahmoud, Liu, Yuanyuan, Lerche, Holger, Schmitz, Dietmar, Nitsch, Robert, and Schuelke, Markus

Published
2023
Full Text
View/download PDF

48. In vitro effects of eslicarbazepine (S‐licarbazepine) as a potential precision therapy on SCN8A variants causing neuropsychiatric disorders.

Author

Bayraktar, Erva, Liu, Yuanyuan, Sonnenberg, Lukas, Hedrich, Ulrike B. S., Sara, Yildirim, Eltokhi, Ahmed, Lyu, Hang, Lerche, Holger, Wuttke, Thomas V., and Lauxmann, Stephan

Subjects
SODIUM channels, NEUROBEHAVIORAL disorders, EPILEPSY, CHANNEL coding, BRAIN diseases, GENETIC code
Abstract

Background and Purpose: Variants in SCN8A, the NaV1.6 channel's coding gene, are characterized by a variety of symptoms, including intractable epileptic seizures, psychomotor delay, progressive cognitive decline, autistic features, ataxia or dystonia. Standard anticonvulsant treatment has a limited impact on the course of disease. Experimental Approach: We investigated the therapeutic potential of eslicarbazepine (S‐licarbazepine; S‐lic), an enhancer of slow inactivation of voltage gated sodium channels, on two variants with biophysical and neuronal gain‐of‐function (G1475R and M1760I) and one variant with biophysical gain‐of‐function but neuronal loss‐of‐function (A1622D) in neuroblastoma cells and in murine primary hippocampal neuron cultures. These three variants cover the broad spectrum of NaV1.6‐associated disease and are linked to representative phenotypes of mild to moderate epilepsy (G1475R), developmental and epileptic encephalopathy (M1760I) and intellectual disability without epilepsy (A1622D). Key Results: Similar to known effects on NaV1.6 wildtype channels, S‐lic predominantly enhances slow inactivation on all tested variants, irrespective of their particular biophysical mechanisms. Beyond that, S‐lic exhibits variant‐specific effects including a partial reversal of pathologically slowed fast inactivation dynamics (A1622D and M1760I) and a trend to reduce enhanced persistent Na+ current by A1622D variant channels. Furthermore, our data in primary transfected neurons reveal that not only variant‐associated hyperexcitability (M1760I and G1475R) but also hypoexcitability (A1622D) can be modulated by S‐lic. Conclusions and Implications: S‐lic has not only substance‐specific effects but also variant‐specific effects. Personalized treatment regimens optimized to achieve such variant‐specific pharmacological modulation may help to reduce adverse side effects and improve the overall therapeutic outcome of SCN8A‐related disease. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

49. ILAE Genetic Literacy Series: Self‐limited familial epilepsy syndromes with onset in neonatal age and infancy

Author

Millevert, Charissa, Weckhuysen, Sarah, Perucca, Piero, Cross, J. Helen, Lerche, Holger, Esterhuizen, Alina I., Lopes‐Cendes, Iscia, Tsai, Meng‐Han, Berkovic, Samuel F., Lowenstein, Daniel H., Tan, Nigel C. K., Helbig, Ingo, Mefford, Heather C., Brunklaus, Andreas, and Lesca, Gaetan

Abstract

The self‐limited (familial) epilepsies with onset in neonates or infants, formerly called benign familial neonatal and/or infantile epilepsies, are autosomal dominant disorders characterized by neonatal‐ or infantile‐onset focal motor seizures and the absence of neurodevelopmental complications. Seizures tend to remit during infancy or early childhood and are therefore called “self‐limited”. A positive family history for epilepsy usually suggests the genetic etiology, but incomplete penetrance and de novo inheritance occur. Here, we review the phenotypic spectrum and the genetic architecture of self‐limited (familial) epilepsies with onset in neonates or infants. Using an illustrative case study, we describe important clues in recognition of these syndromes, diagnostic steps including genetic testing, management, and genetic counseling.

Published
2023
Full Text
View/download PDF

50. ILAE Genetic Literacy Series: Postmortem Genetic Testing in Sudden Unexpected Death in Epilepsy

Author

Bagnall, Richard D., Perucca, Piero, Cross, J. Helen, Lerche, Holger, Esterhuizen, Alina I., Lopes‐Cendes, Iscia, Tsai, Meng‐Han, Berkovic, Samuel F., Lowenstein, Daniel H., Tan, Nigel C. K., Helbig, Ingo, Mefford, Heather C., Brunklaus, Andreas, and Lesca, Gaetan

Abstract

A 24‐year‐old man with non‐lesional bitemporal lobe epilepsy since age 16 years was found dead in bed around midday. He was last seen the previous night when he was witnessed to have a tonic–clonic seizure. Before his death, he was experiencing weekly focal impaired awareness seizures and up to two focal‐to‐bilateral tonic–clonic seizures each year. He had trialed several antiseizure medications and was on levetiracetam 1500 mg/day, lamotrigine 400 mg/day, and clobazam 10 mg/day at the time of death. Other than epilepsy, his medical history was unremarkable. Of note, he had an older brother with a history of febrile seizures and a paternal first cousin with epilepsy. No cause of death was identified following a comprehensive postmortem investigation. The coroner classified the death as “sudden unexpected death in epilepsy” (SUDEP), and it would qualify as “definite SUDEP” using the current definitions.1This left the family with many questions unanswered; in particular, they wish to know what caused the death and whether it could happen to other family members. Could postmortem genetic testing identify a cause of death, provide closure to the family, and facilitate cascade genetic testing of first‐degree family members who may be at risk of sudden death? While grieving family members struggle with uncertainty about the cause of death, we as clinicians also face similar uncertainties about genetic contributions to SUDEP, especially when the literature is sparse, and the utility of genetic testing is still being worked out. We aim to shed some light on this topic, highlighting areas where data is emerging but also areas where uncertainty remains, keeping our case in mind as we examine this clinically important area.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results