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1. A genome-wide association study of sodium levels and drug metabolism in an epilepsy cohort treated with carbamazepine and oxcarbazepine

Author

Berghuis, B., Stapleton, C., Sonsma, A. C. M., Hulst, J., de Haan, G. -J., Lindhout, D., Demurtas, R., Krause, R., Depondt, C., Kunz, W. S., Zara, F., Striano, P., Craig, J., Auce, P., Marson, A. G., Stefansson, H., O'Brien, T. J., Johnson, M. R., Sills, G. J., Wolking, S., Lerche, H., Sisodiya, S. M., Sander, J. W., Cavalleri, G. L., Koeleman, B. P. C., Mccormack, M., Avbersek, A., Leu, C., Heggeli, K., Willis, J., Speed, D., Sargsyan, N., Chinthapalli, K., Borghei, M., Coppola, A., Gambardella, A., Becker, F., Rau, S., Hengsbach, C., Weber, Y. G., Delanty, N., Campbell, E., Gudmundsson, L. J., Ingason, A., Stefansson, K., Schneider, R., Balling, R., Francis, B., Jorgensen, A., Morris, A., Langley, S., Srivastava, P., Brodie, M., Todaro, M., Petrovski, S., Hutton, J., Zimprich, F., Krenn, M., Muhle, H., Martin Klein, K., Moller, R., Nikanorova, M., Weckhuysen, S., Rener-Primec, Z., Berghuis, Bianca, Stapleton, Caragh, Sonsma, Anja C. M., Hulst, Janic, de Haan, Gerrit-Jan, Lindhout, Dick, Demurtas, Rita, Krause, Roland, Depondt, Chantal, Kunz, Wolfram S., Zara, Federico, Striano, Pasquale, Craig, John, Auce, Paul, Marson, Anthony G., Stefansson, Hreinn, O'Brien, Terence J., Johnson, Michael R., Sills, Graeme J., Wolking, Stefan, Lerche, Holger, Sisodiya, Sanjay M., Sander, Josemir W., Cavalleri, Gianpiero L., Koeleman, Bobby P. C., Mccormack, Mark, Weckhuysen, Sarah, EpiPGX Consortium, Imperial College Healthcare NHS Trust- BRC Funding, and Commission of the European Communities

Subjects
medicine.medical_specialty, hyponatremia, Clinical Neurology, Gastroenterology, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, adverse effects, antiepileptic drugs, EpiPGX Consortium, GWAS, antiepileptic drug, Internal medicine, adverse effect, medicine, Oxcarbazepine, Adverse effect, 030304 developmental biology, 0303 health sciences, business.industry, Généralités, Carbamazepine, medicine.disease, 3. Good health, Neurology, Cohort, Full‐length Original Research, Phenobarbital, Human medicine, Neurology (clinical), Hyponatremia, business, 030217 neurology & neurosurgery, Drug metabolism, medicine.drug
Abstract

Objective: To ascertain the clinical and genetic factors contributing to carbamazepine- and oxcarbazepine-induced hyponatremia (COIH), and to carbamazepine (CBZ) metabolism, in a retrospectively collected, cross-sectional cohort of people with epilepsy. Methods: We collected data on serum sodium levels and antiepileptic drug levels in people with epilepsy attending a tertiary epilepsy center while on treatment with CBZ or OXC. We defined hyponatremia as Na+ ≤134 mEq/L. We estimated the CBZ metabolic ratio defined as the log transformation of the ratio of metabolite CBZ-diol to unchanged drug precursor substrate as measured in serum. Results: Clinical and genetic data relating to carbamazepine and oxcarbazepine trials were collected in 1141 patients. We did not observe any genome-wide significant associations with sodium level in a linear trend or hyponatremia as a dichotomous trait. Age, sex, number of comedications, phenytoin use, phenobarbital use, and sodium valproate use were significant predictors of CBZ metabolic ratio. No genome-wide significant associations with CBZ metabolic ratio were found. Significance: Although we did not detect a genetic predictor of hyponatremia or CBZ metabolism in our cohort, our findings suggest that the determinants of CBZ metabolism are multifactorial., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2019

2. Genome-wide mega-analysis identifies 16 loci and highlights diverse biological mechanisms in the common epilepsies

Author

Christian E. Elger, Wolfgang Lieb, Claudia B. Catarino, Pasquale Striano, Andreja Avbersek, Daniel H. Lowenstein, Philip E. M. Smith, G. Neil Thomas, Dick Lindhout, Erin L. Heinzen, Sanjay M. Sisodiya, Orrin Devinsky, Alexander R. H. Smith, Rainer Surges, Stefan Wolking, Patrick Cossette, Annapurna Poduri, Eric B. Geller, Stacey S. Cherny, Maria Stella Vari, Peter De Jonghe, Kevin Haas, Andres Ingason, Reetta Kälviäinen, Krishna Chinthapalli, Dennis Lal, Graeme J. Sills, Martina Moerzinger, Jonathan P. Bradfield, Mark R Newton, Federico Zara, Sheryl R. Haut, Warren D. Lo, Holger Lerche, Felix Rosenow, Robert C. Knowlton, Mark McCormack, Sarah Rau, Felicitas Becker, Andre Franke, Heidi E. Kirsch, Patrick Kwan, Remi Stevelink, Rodney A. Radtke, Michele Iacomino, Faith Pangilinan, Ulrich Stephani, David F. Smith, Eva M. Reinthaler, Chantal Depondt, Hiltrud Muhle, Russell J. Buono, Alison J. Coffey, Ellen Campbell, Marvin Johnson, Bernhard J. Steinhoff, Sarah von Spiczak, Yvonne G. Weber, Ping-Wing Ng, Kerstin Hallmann, Philipp S. Reif, David Goldstein, Bettina Schmitz, Antonietta Coppola, Jerry J. Shih, Karen Oliver, Anne-Mari Kantanen, Rossana Tozzi, Markus Wolff, Albert J. Becker, Anne M. Molloy, Lisa Slattery, James L. Mills, Judith L.Z. Weisenberg, Jacqueline A. French, Lawrence C. Brody, Int League Against Epilepsy Conso, Peter Widdess-Walsh, Helle Hjalgrim, Christian Hengsbach, Christoph J. Schankin, Johan G. Eriksson, Tracy A. Glauser, Yu-Lung Lau, Larry Baum, Anna-Elina Lehesjoki, Nicole M. Walley, Josemir W. Sander, Markus M. Noethen, Simon Glynn, Jennifer Jamnadas-Khoda, Thomas Bast, Susanne Schoch, Iscia Lopes-Cendes, Doug Speed, Anja C M Sonsma, John Craig, Ingo Helbig, Marian Todaro, Gregory D. Cascino, Steven C. Schachter, Fritz Zimprich, Samuel F. Berkovic, Michael Privitera, Ben Francis, Martin Krenn, Rikke S. Møller, Eileen P.G. Vining, Martha Feucht, Bobby P. C. Koeleman, Ruben Kuzniecky, Christian Gieger, K. Meng Tan, Dalia Kasperaviciute, Pauls Auce, Gianpiero L. Cavalleri, Melanie Bahlo, Zhi Wei, Nasir Mirza, David J. Balding, Mike Smith, Liu Lin Thio, Alastair Compston, Katja E. Boysen, Gerrit-Jan de Haan, Hongsheng Gui, Hakon Hakonarson, Christopher D. Whelan, Colin P. Doherty, Youling Guo, Aarno Palotie, Wolfram S. Kunz, Slavé Petrovski, Thomas Sander, Frank Visscher, Bianca Berghuis, Costin Leu, Verena Gaus, Dennis J. Dlugos, Ingrid E. Scheffer, Alberto Malovini, Konstantin Strauch, Wanling Yang, Saskia Freytag, H. Stroink, Pak C. Sham, Norman Delanty, Terence J. O'Brien, Carolien G.F. de Kovel, Thomas U. Mayer, Anthony G Marson, Bassel Abou-Khalil, Thomas N. Ferraro, Dorothée G.A. Kasteleijn-Nolst Trenité, Roland Krause, Sarah Peter, Peter Nuernberg, Theresa Scattergood, Michael R. Sperling, Johan Eriksson / Principal Investigator, Department of General Practice and Primary Health Care, Clinicum, Department of Medical and Clinical Genetics, Medicum, Centre of Excellence in Complex Disease Genetics, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, Genomics of Neurological and Neuropsychiatric Disorders, Int League Against Epilepsy Conso, Abou-Khalil, Bassel, Auce, Paul, Avbersek, Andreja, Bahlo, Melanie, J Balding, David, Bast, Thoma, Baum, Larry, J Becker, Albert, Becker, Felicita, Berghuis, Bianca, F Berkovic, Samuel, E Boysen, Katja, P Bradfield, Jonathan, C Brody, Lawrence, J Buono, Russell, Campbell, Ellen, D Cascino, Gregory, B Catarino, Claudia, L Cavalleri, Gianpiero, S Cherny, Stacey, Chinthapalli, Krishna, J Coffey, Alison, Compston, Alastair, Coppola, Antonietta, Cossette, Patrick, J Craig, John, de Haan, Gerrit-Jan, De Jonghe, Peter, F de Kovel, Carolien G, Delanty, Norman, Depondt, Chantal, Devinsky, Orrin, J Dlugos, Denni, P Doherty, Colin, E Elger, Christian, G Eriksson, Johan, N Ferraro, Thoma, Feucht, Martha, Francis, Ben, Franke, Andre, A French, Jacqueline, Freytag, Saskia, Gaus, Verena, B Geller, Eric, Gieger, Christian, Glauser, Tracy, Glynn, Simon, B Goldstein, David, Gui, Hongsheng, Guo, Youling, F Haas, Kevin, Hakonarson, Hakon, Hallmann, Kerstin, Haut, Sheryl, L Heinzen, Erin, Helbig, Ingo, Hengsbach, Christian, Hjalgrim, Helle, Iacomino, Michele, Ingason, André, Jamnadas-Khoda, Jennifer, R Johnson, Michael, Kälviäinen, Reetta, Kantanen, Anne-Mari, Kasperavičiūte, Dalia, Kasteleijn-Nolst Trenite, Dorothee, E Kirsch, Heidi, C Knowlton, Robert, C Koeleman, Bobby P, Krause, Roland, Krenn, Martin, S Kunz, Wolfram, Kuzniecky, Ruben, Kwan, Patrick, Lal, Denni, Lau, Yu-Lung, Lehesjoki, Anna-Elina, Lerche, Holger, Leu, Costin, Lieb, Wolfgang, Lindhout, Dick, D Lo, Warren, Lopes-Cendes, Iscia, H Lowenstein, Daniel, Malovini, Alberto, G Marson, Anthony, Mayer, Thoma, Mccormack, Mark, L Mills, Jame, Mirza, Nasir, Moerzinger, Martina, S Møller, Rikke, M Molloy, Anne, Muhle, Hiltrud, Newton, Mark, Ng, Ping-Wing, M Nöthen, Marku, Nürnberg, Peter, J O'Brien, Terence, L Oliver, Karen, Palotie, Aarno, Pangilinan, Faith, Peter, Sarah, Petrovski, Slavé, Poduri, Annapurna, Privitera, Michael, Radtke, Rodney, Rau, Sarah, S Reif, Philipp, M Reinthaler, Eva, Rosenow, Felix, W Sander, Josemir, Sander, Thoma, Scattergood, Theresa, C Schachter, Steven, J Schankin, Christoph, E Scheffer, Ingrid, Schmitz, Bettina, Schoch, Susanne, C Sham, Pak, J Shih, Jerry, J Sills, Graeme, M Sisodiya, Sanjay, Slattery, Lisa, Smith, Alexander, F Smith, David, C Smith, Michael, E Smith, Philip, M Sonsma, Anja C, Speed, Doug, R Sperling, Michael, J Steinhoff, Bernhard, Stephani, Ulrich, Stevelink, Remi, Strauch, Konstantin, Striano, Pasquale, Stroink, Han, Surges, Rainer, Meng Tan, K, Lin Thio, Liu, Neil Thomas, G, Todaro, Marian, Tozzi, Rossana, S Vari, Maria, G Vining, Eileen P, Visscher, Frank, von Spiczak, Sarah, M Walley, Nicole, G Weber, Yvonne, Wei, Zhi, Weisenberg, Judith, D Whelan, Christopher, Widdess-Walsh, Peter, Wolff, Marku, Wolking, Stefan, Yang, Wanling, Zara, Federico, Zimprich, Fritz, Wellcome Trust, GlaxoSmithKline Services Unlimited, Commission of the European Communities, Medical Research Council (MRC), and Imperial College Healthcare NHS Trust- BRC Funding

Subjects
0301 basic medicine, Linkage disequilibrium, LD SCORE REGRESSION, Neurology [D14] [Human health sciences], General Physics and Astronomy, Genome-wide association study, ILAE COMMISSION, Neurodegenerative, Genome, Linkage Disequilibrium, Epilepsy, Gene Frequency, Missing heritability problem, 2.1 Biological and endogenous factors, Aetiology, lcsh:Science, International League Against Epilepsy Consortium on Complex Epilepsies, Multidisciplinary, Genetic Predisposition to Disease/genetics, Chromosome Mapping, ASSOCIATION, Epilepsy/classification, Single Nucleotide, ABSENCE, 3. Good health, Technologie de l'environnement, contrôle de la pollution, SNP HERITABILITY, Neurological, Genome-Wide Association Study/methods, Case-Control Studie, Engineering sciences. Technology, Human, Biotechnology, EXPRESSION, SUSCEPTIBILITY LOCI, Genotype, Science, Quantitative Trait Loci, 610 Medicine & health, Computational biology, Biology, Quantitative trait locus, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, Article, GENETIC ARCHITECTURE, 03 medical and health sciences, MD Multidisciplinary, medicine, Genetics, SNP, Chimie, FRONTAL-LOBE, Humans, Genetic Predisposition to Disease, Polymorphism, METAANALYSIS, Neurologie [D14] [Sciences de la santé humaine], Physique, Human Genome, Neurosciences, General Chemistry, Astronomie, medicine.disease, Genetic architecture, Brain Disorders, 030104 developmental biology, Gene Expression Regulation, Case-Control Studies, epilepsy, lcsh:Q, 3111 Biomedicine, Quantitative Trait Loci/genetics, Genome-Wide Association Study
Abstract

The epilepsies affect around 65 million people worldwide and have a substantial missing heritability component. We report a genome-wide mega-analysis involving 15,212 individuals with epilepsy and 29,677 controls, which reveals 16 genome-wide significant loci, of which 11 are novel. Using various prioritization criteria, we pinpoint the 21 most likely epilepsy genes at these loci, with the majority in genetic generalized epilepsies. These genes have diverse biological functions, including coding for ion-channel subunits, transcription factors and a vitamin-B6 metabolism enzyme. Converging evidence shows that the common variants associated with epilepsy play a role in epigenetic regulation of gene expression in the brain. The results show an enrichment for monogenic epilepsy genes as well as known targets of antiepileptic drugs. Using SNP-based heritability analyses we disentangle both the unique and overlapping genetic basis to seven different epilepsy subtypes. Together, these findings provide leads for epilepsy therapies based on underlying pathophysiology., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2018
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3. Rare coding variants in genes encoding GABAA receptors in genetic generalised epilepsies: an exome-based case-control study

Author

Patrick May, Simon Girard, Merle Harrer, Dheeraj R Bobbili, Julian Schubert, Stefan Wolking, Felicitas Becker, Pamela Lachance-Touchette, Caroline Meloche, Micheline Gravel, Cristina E Niturad, Julia Knaus, Carolien De Kovel, Mohamad Toliat, Anne Polvi, Michele Iacomino, Rosa Guerrero-López, Stéphanie Baulac, Carla Marini, Holger Thiele, Janine Altmüller, Kamel Jabbari, Ann-Kathrin Ruppert, Wiktor Jurkowski, Dennis Lal, Raffaella Rusconi, Sandrine Cestèle, Benedetta Terragni, Ian D Coombs, Christopher A Reid, Pasquale Striano, Hande Caglayan, Auli Siren, Kate Everett, Rikke S Møller, Helle Hjalgrim, Hiltrud Muhle, Ingo Helbig, Wolfram S Kunz, Yvonne G Weber, Sarah Weckhuysen, Peter De Jonghe, Sanjay M Sisodiya, Rima Nabbout, Silvana Franceschetti, Antonietta Coppola, Maria S Vari, Dorothée Kasteleijn-Nolst Trenité, Betul Baykan, Ugur Ozbek, Nerses Bebek, Karl M Klein, Felix Rosenow, Dang K Nguyen, François Dubeau, Lionel Carmant, Anne Lortie, Richard Desbiens, Jean-François Clément, Cécile Cieuta-Walti, Graeme J Sills, Pauls Auce, Ben Francis, Michael R Johnson, Anthony G Marson, Bianca Berghuis, Josemir W Sander, Andreja Avbersek, Mark McCormack, Gianpiero L Cavalleri, Norman Delanty, Chantal Depondt, Martin Krenn, Fritz Zimprich, Sarah Peter, Marina Nikanorova, Robert Kraaij, Jeroen van Rooij, Rudi Balling, M Arfan Ikram, André G Uitterlinden, Giuliano Avanzini, Stephanie Schorge, Steven Petrou, Massimo Mantegazza, Thomas Sander, Eric LeGuern, Jose M Serratosa, Bobby P C Koeleman, Aarno Palotie, Anna-Elina Lehesjoki, Michael Nothnagel, Peter Nürnberg, Snezana Maljevic, Federico Zara, Patrick Cossette, Roland Krause, Holger Lerche, Edoardo Ferlazzo, Carlo di Bonaventura, Angela La Neve, Paolo Tinuper, Francesca Bisulli, Aglaia Vignoli, Giuseppe Capovilla, Giovanni Crichiutti, Antonio Gambardella, Vincenzo Belcastro, Amedeo Bianchi, Destina Yalçın, Gulsen Dizdarer, Kezban Arslan, Zuhal Yapıcı, Demet Kuşcu, Costin Leu, Kristin Heggeli, Joseph Willis, Sarah R Langley, Andrea Jorgensen, Prashant Srivastava, Sarah Rau, Christian Hengsbach, Anja C.M. Sonsma, Université Côte d'Azur, CNRS, UMR 7275, Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Erasmus University Medical Center [Rotterdam] (Erasmus MC), Laboratory of Molecular Genetics of Stem Cells [University of Montreal], University of Montreal-Institut de Recherche en Immunologie et en Cancérologie [UdeM-Montréal] (IRIC), Université de Montréal (UdeM)-Université de Montréal (UdeM), University of Tübingen, University Medical Center [Utrecht], Universita degli studi di Genova, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), A.Meyer Children's Hospital, Max Planck Institute for Plant Breeding Research (MPIPZ), Génomique métabolique (UMR 8030), Genoscope - Centre national de séquençage [Evry] (GENOSCOPE), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS), University of Cologne, The Genome Analysis Centre (TGAC), Cologne Center for Genomics, Institut de pharmacologie moléculaire et cellulaire (IPMC), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des protéines (IP), Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS), Department of Neurophysiopathology, Besta Neurological Institute, University of Southern Denmark (SDU), Medical Genetics Laboratory, Children’s Hospital of Philadelphia (CHOP ), Universitätsklinikum Bonn (UKB), Antwerp University Hospital [Edegem] (UZA), University of Antwerp (UA), Department of Clinical and Experimental Epilepsy, University College of London [London] (UCL), Département de Neuropédiatrie, CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Instituco Neurologico C. Besta, Instituto Neurologico C. Besta, Medical Genetics and Pediatric Cardiology, IRCCS Ospedale Pediatrico Bambino Gesù [Roma], Département de mathématiques [Sherbrooke] (UdeS), Faculté des sciences [Sherbrooke] (UdeS), Université de Sherbrooke (UdeS)-Université de Sherbrooke (UdeS), University of Liverpool, Institute of Neurology [London], Royal College of Surgeons in Ireland (RCSI), Neurology Division, Beaumont Hospital, Dublin 9, Ireland, Beaumont Hospital, Hôpital Erasme [Bruxelles] (ULB), Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB), Medizinische Universität Wien = Medical University of Vienna, Department of Epilepsy Clinic and Experimental Neurophysiology, Fondazione IRCCS Istituto Neurologico 'Carlo Besta', Broad Institute of MIT and Harvard (BROAD INSTITUTE), Harvard Medical School [Boston] (HMS)-Massachusetts Institute of Technology (MIT)-Massachusetts General Hospital [Boston], Department of Medical and Clinical Genetics [Helsinki], Haartman Institute [Helsinki], Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Institute of Medical Informatics and Statistics, Pediatric Neurology and Neuromuscular Diseases Unit, Centre Hospitalier de l'Université de Montréal (CHUM), Université de Montréal (UdeM), Hertie Institute for Clinical Brain Research [Tubingen], Regional Epilepsy Center, Reggio Calabria, Agronomes et Vétérinaires Sans Frontières (AVSF), AVSF, NIHR Biomedical Research Centre [London], Guy's and St Thomas' NHS Foundation Trust-King‘s College London, Wellcome Trust, Commission of the European Communities, Imperial College Healthcare NHS Trust- BRC Funding, Internal Medicine, Epidemiology, Luxembourg Centre For Systems Biomedicine (LCSB), University of Luxembourg [Luxembourg], Università degli studi di Genova = University of Genoa (UniGe), Heart Center Leipzig, University Medical Center of Schleswig–Holstein = Universitätsklinikum Schleswig-Holstein (UKSH), Kiel University, Acibadem University Dspace, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université d'Évry-Val-d'Essonne (UEVE), Université Nice Sophia Antipolis (... - 2019) (UNS), University of Helsinki-University of Helsinki-Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki, Centre of Excellence in Complex Disease Genetics, Aarno Palotie / Principal Investigator, Institute for Molecular Medicine Finland, Medicum, Research Programme for Molecular Neurology, Research Programs Unit, Neuroscience Center, University of Helsinki, Genomics of Neurological and Neuropsychiatric Disorders, Epicure Consortium, EuroEPINOMICS COGIE Consortium, EpiPGX Consortium, May, Gabriella, Girard, S., Harrer, M., Bobbili, D. R., Schubert, J., Wolking, S., Becker, F., Lachance-Touchette, P., Meloche, C., Gravel, M., Niturad, C. E., Knaus, J., De Kovel, C., Toliat, M., Polvi, A., Iacomino, M., Guerrero-López, R., Baulac, S., Marini, C., Thiele, H., Altmüller, J., Jabbari, K., Ruppert, A. -K., Jurkowski, W., Lal, D., Rusconi, R., Cestèle, S., Terragni, B., Coombs, I. D., Reid, C. A., Striano, P., Caglayan, H., Siren, A., Everett, K., Møller, R. S., Hjalgrim, H., Muhle, H., Helbig, I., Kunz, W. S., Weber, Y. G., Weckhuysen, S., Jonghe, P. D., Sisodiya, S. M., Nabbout, R., Franceschetti, S., Coppola, A., Vari, M. S., Kasteleijn-Nolst Trenité, D., Baykan, B., Ozbek, U., Bebek, N., Klein, K. M., Rosenow, F., Nguyen, D. K., Dubeau, F., Carmant, L., Lortie, A., Desbiens, R., Clément, J. -F., Cieuta-Walti, C., Sills, G. J., Auce, P., Francis, B., Johnson, M. R., Marson, A. G., Berghuis, B., Sander, J. W., Avbersek, A., Mccormack, M., Cavalleri, G. L., Delanty, N., Depondt, C., Krenn, M., Zimprich, F., Peter, S., Nikanorova, M., Kraaij, R., van Rooij, J., Balling, R., Ikram, M. A., Uitterlinden, A. G., Avanzini, Giulio, Schorge, S., Petrou, S., Mantegazza, M., Sander, T., Leguern, E., Serratosa, J. M., Koeleman, B. P. C., Palotie, A., Lehesjoki, A. -E., Nothnagel, M., Nürnberg, P., Maljevic, S., Zara, F., Cossette, P., Krause, R., Lerche, H., De Jonghe, P., Arfan Ikram, M., Ferlazzo, E., di Bonaventura, C., La Neve, A., Tinuper, P., Bisulli, F., Vignoli, Massimo, Capovilla, G., Crichiutti, G., Gambardella, A., Belcastro, V., Bianchi, A., Yalçın, D., Dizdarer, G., Arslan, K., Yapıcı, Z., Kuşcu, D., Leu, C., Heggeli, K., Willis, J., Langley, S. R., Jorgensen, A., Srivastava, P., Rau, S., Hengsbach, C., Sonsma, A. C. M., University of Montreal-Institute for Research in Immunology and Cancer (IRIC), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université d'Évry-Val-d'Essonne (UEVE), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Département de Mathématiques, Université de Sherbrooke, Université de Sherbrooke [Sherbrooke], Hôpital Erasme (Bruxelles), May, Patrick, Girard, Simon, Harrer, Merle, Bobbili, Dheeraj R, Schubert, Julian, Wolking, Stefan, Becker, Felicita, Lachance-Touchette, Pamela, Meloche, Caroline, Gravel, Micheline, Niturad, Cristina E, Knaus, Julia, De Kovel, Carolien, Toliat, Mohamad, Polvi, Anne, Iacomino, Michele, Guerrero-López, Rosa, Baulac, Stéphanie, Marini, Carla, Thiele, Holger, Altmüller, Janine, Jabbari, Kamel, Ruppert, Ann-Kathrin, Jurkowski, Wiktor, Lal, Denni, Rusconi, Raffaella, Cestèle, Sandrine, Terragni, Benedetta, Coombs, Ian D, Reid, Christopher A, Striano, Pasquale, Caglayan, Hande, Siren, Auli, Everett, Kate, Møller, Rikke S, Hjalgrim, Helle, Muhle, Hiltrud, Helbig, Ingo, Kunz, Wolfram S, Weber, Yvonne G, Weckhuysen, Sarah, Jonghe, Peter De, Sisodiya, Sanjay M, Nabbout, Rima, Franceschetti, Silvana, Coppola, Antonietta, Vari, Maria S, Kasteleijn-Nolst Trenité, Dorothée, Baykan, Betul, Ozbek, Ugur, Bebek, Nerse, Klein, Karl M, Rosenow, Felix, Nguyen, Dang K, Dubeau, Françoi, Carmant, Lionel, Lortie, Anne, Desbiens, Richard, Clément, Jean-Françoi, Cieuta-Walti, Cécile, Sills, Graeme J, Auce, Paul, Francis, Ben, Johnson, Michael R, Marson, Anthony G, Berghuis, Bianca, Sander, Josemir W, Avbersek, Andreja, McCormack, Mark, Cavalleri, Gianpiero L., Delanty, Norman, Depondt, Chantal, Krenn, Martin, Zimprich, Fritz, Peter, Sarah, Nikanorova, Marina, Kraaij, Robert, van Rooij, Jeroen, Balling, Rudi, Ikram, M Arfan, Uitterlinden, André G, Avanzini, Giuliano, Schorge, Stephanie, Petrou, Steven, Mantegazza, Massimo, Sander, Thoma, LeGuern, Eric, Serratosa, Jose M, Koeleman, Bobby P C, Palotie, Aarno, Lehesjoki, Anna-Elina, Nothnagel, Michael, Nürnberg, Peter, Maljevic, Snezana, Zara, Federico, Cossette, Patrick, Krause, Roland, Lerche, Holger, De Jonghe, Peter, Ferlazzo, Edoardo, di Bonaventura, Carlo, La Neve, Angela, Tinuper, Paolo, Bisulli, Francesca, Vignoli, Aglaia, Capovilla, Giuseppe, Crichiutti, Giovanni, Gambardella, Antonio, Belcastro, Vincenzo, Bianchi, Amedeo, Yalçın, Destina, Dizdarer, Gulsen, Arslan, Kezban, Yapıcı, Zuhal, Kuşcu, Demet, Leu, Costin, Heggeli, Kristin, Willis, Joseph, Langley, Sarah R, Jorgensen, Andrea, Srivastava, Prashant, Rau, Sarah, Hengsbach, Christian, and Sonsma, Anja C.M.

Subjects
0301 basic medicine, GAMMA-2-SUBUNIT, [SDV]Life Sciences [q-bio], GABRA5, Clinical Neurology, 15Q13.3 MICRODELETIONS, ABSENCE EPILEPSY, SEQUENCE DATA, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, 3124 Neurology and psychiatry, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Genetic variation, medicine, EPILEPTIC ENCEPHALOPATHIES, Exome, Exome sequencing, ComputingMilieux_MISCELLANEOUS, Genetic association, Genetics, RISK, Science & Technology, FEBRILE SEIZURES, Neurology & Neurosurgery, biology, 3112 Neurosciences, 1103 Clinical Sciences, MOUSE MODEL, medicine.disease, ASSOCIATION ANALYSIS, 030104 developmental biology, DE-NOVO MUTATIONS, Cohort, biology.protein, Neurology (clinical), Human medicine, Neurosciences & Neurology, 1109 Neurosciences, Life Sciences & Biomedicine, 030217 neurology & neurosurgery, Cohort study
Abstract

BACKGROUND: Genetic generalised epilepsy is the most common type of inherited epilepsy. Despite a high concordance rate of 80% in monozygotic twins, the genetic background is still poorly understood. We aimed to investigate the burden of rare genetic variants in genetic generalised epilepsy.METHODS: For this exome-based case-control study, we used three different genetic generalised epilepsy case cohorts and three independent control cohorts, all of European descent. Cases included in the study were clinically evaluated for genetic generalised epilepsy. Whole-exome sequencing was done for the discovery case cohort, a validation case cohort, and two independent control cohorts. The replication case cohort underwent targeted next-generation sequencing of the 19 known genes encoding subunits of GABAA receptors and was compared to the respective GABAA receptor variants of a third independent control cohort. Functional investigations were done with automated two-microelectrode voltage clamping in Xenopus laevis oocytes.FINDINGS: Statistical comparison of 152 familial index cases with genetic generalised epilepsy in the discovery cohort to 549 ethnically matched controls suggested an enrichment of rare missense (Nonsyn) variants in the ensemble of 19 genes encoding GABAA receptors in cases (odds ratio [OR] 2·40 [95% CI 1·41-4·10]; pNonsyn=0·0014, adjusted pNonsyn=0·019). Enrichment for these genes was validated in a whole-exome sequencing cohort of 357 sporadic and familial genetic generalised epilepsy cases and 1485 independent controls (OR 1·46 [95% CI 1·05-2·03]; pNonsyn=0·0081, adjusted pNonsyn=0·016). Comparison of genes encoding GABAA receptors in the independent replication cohort of 583 familial and sporadic genetic generalised epilepsy index cases, based on candidate-gene panel sequencing, with a third independent control cohort of 635 controls confirmed the overall enrichment of rare missense variants for 15 GABAA receptor genes in cases compared with controls (OR 1·46 [95% CI 1·02-2·08]; pNonsyn=0·013, adjusted pNonsyn=0·027). Functional studies for two selected genes (GABRB2 and GABRA5) showed significant loss-of-function effects with reduced current amplitudes in four of seven tested variants compared with wild-type receptors.INTERPRETATION: Functionally relevant variants in genes encoding GABAA receptor subunits constitute a significant risk factor for genetic generalised epilepsy. Examination of the role of specific gene groups and pathways can disentangle the complex genetic architecture of genetic generalised epilepsy.FUNDING: EuroEPINOMICS (European Science Foundation through national funding organisations), Epicure and EpiPGX (Sixth Framework Programme and Seventh Framework Programme of the European Commission), Research Unit FOR2715 (German Research Foundation and Luxembourg National Research Fund).

Published
2018
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4. Genetic variation in CFH predicts phenytoin-induced maculopapular exanthema in European-descent patients

Author

McCormack, Mark, Gui, Hongsheng, Ingason, Andrés, Speed, Doug, Wright, Galen E B, Zhang, Eunice J., Secolin, Rodrigo, Yasuda, Clarissa, Kwok, Maxwell, Wolking, Stefan, Becker, Felicitas, Rau, Sarah, Avbersek, Andreja, Heggeli, Kristin, Leu, Costin, Depondt, Chantal, Sills, Graeme J., Marson, Anthony G., Auce, Pauls, Brodie, Martin J., Francis, Ben, Johnson, Michael R., Koeleman, Bobby P C, Striano, Pasquale, Coppola, Antonietta, Zara, Federico, Kunz, Wolfram S., Sander, Josemir W., Lerche, Holger, Klein, Karl Martin, Weckhuysen, Sarah, Krenn, Martin, Gudmundsson, Lárus J, Stefánsson, Kári, Krause, Roland, Shear, Neil, Ross, Colin J D, Delanty, Norman, Pirmohamed, Munir, Carleton, Bruce C., Cendes, Fernando, Lopes-Cendes, Iscia, Liao, Wei-Ping, O'Brien, Terence J., Sisodiya, Sanjay M., Cherny, Stacey, Kwan, Patrick, Baum, Larry, Cavalleri, Gianpiero L., International League Against Epilepsy Consortium on Complex Epilepsies, Bisulli, Francesca, Mccormack, Mark, Gui, Hongsheng, Ingason, André, Speed, Doug, Wright, Galen E B, Zhang, Eunice J, Secolin, Rodrigo, Yasuda, Clarissa, Kwok, Maxwell, Wolking, Stefan, Becker, Felicita, Rau, Sarah, Avbersek, Andreja, Heggeli, Kristin, Leu, Costin, Depondt, Chantal, Sills, Graeme J, Marson, Anthony G, Auce, Paul, Brodie, Martin J, Francis, Ben, Johnson, Michael R, Koeleman, Bobby P C, Striano, Pasquale, Coppola, Antonietta, Zara, Federico, Kunz, Wolfram S, Sander, Josemir W, Lerche, Holger, Klein, Karl Martin, Weckhuysen, Sarah, Krenn, Martin, Gudmundsson, Lárus J, Stefánsson, Kári, Krause, Roland, Shear, Neil, Ross, Colin J D, Delanty, Norman, Pirmohamed, Munir, Carleton, Bruce C, Cendes, Fernando, Lopes-Cendes, Iscia, Liao, Wei-Ping, O'Brien, Terence J, Sisodiya, Sanjay M, Cherny, Stacey, Kwan, Patrick, Baum, Larry, Cavalleri, Gianpiero L, EPIGEN Consortium, Canadian Pharmacogenomics Network, for the EpiPGX Consortium, Int League Epilepsy Consortium, Læknadeild (HÍ), Faculty of Medicine (UI), Heilbrigðisvísindasvið (HÍ), School of Health Sciences (UI), Háskóli Íslands, University of Iceland, Wellcome Trust, Imperial College Healthcare NHS Trust- BRC Funding, Commission of the European Communities, McCormack, Mark, Zhang, Eunice J., Sills, Graeme J., Marson, Anthony G., Brodie, Martin J., Johnson, Michael R., Kunz, Wolfram S., Sander, Josemir W., Carleton, Bruce C., O'Brien, Terence J., Sisodiya, Sanjay M., Cavalleri, Gianpiero L., International League Against Epilepsy Consortium on Complex Epilepsie, and Bisulli, Francesca

Subjects
0301 basic medicine, Linkage disequilibrium, Pharmacogenomic Variants, Neurology [D14] [Human health sciences], Genome-wide association study, HLA-A-ASTERISK-3101, Linkage Disequilibrium, 0302 clinical medicine, Flogaveiki, INDUCED HYPERSENSITIVITY REACTIONS, Medicine, genetics, POPULATION, education.field_of_study, Public health, Taugavísindi, 3. Good health, Carbamazepine, Neurology, Factor H, Complement Factor H, Association studies in genetics, Lýðheilsa, Anticonvulsants, Drug Eruptions, Erfðarannsóknir, Life Sciences & Biomedicine, STEVENS-JOHNSON-SYNDROME, Population, Antiepileptic drugs, adverse drug reaction, Clinical Neurology, Mutation, Missense, Human leukocyte antigen, Complement factor I, Case control studies, White People, Article, 03 medical and health sciences, Asian People, RISK-FACTOR, Seizures, Genetic variation, Humans, GENOME-WIDE ASSOCIATION, education, METAANALYSIS, Retrospective Studies, Science & Technology, Neurology & Neurosurgery, Neurologie [D14] [Sciences de la santé humaine], Epilepsy, HLA-A Antigens, business.industry, Genetic Variation, Correction, CUTANEOUS ADVERSE-REACTIONS, 1103 Clinical Sciences, Généralités, 1702 Cognitive Science, GENOTYPES, 030104 developmental biology, Apolipoproteins, Case-Control Studies, Phenytoin, LAMOTRIGINE, Immunology, Alternative complement pathway, epilepsy, Neurosciences & Neurology, Neurology (clinical), Human medicine, 1109 Neurosciences, business, 030217 neurology & neurosurgery, Genome-Wide Association Study
Abstract

Publisher's version (útgefin grein), Objective To characterize, among European and Han Chinese populations, the genetic predictors of maculopapular exanthema (MPE), a cutaneous adverse drug reaction common to antiepileptic drugs. Methods We conducted a case-control genome-wide association study of autosomal genotypes, including Class I and II human leukocyte antigen (HLA) alleles, in 323 cases and 1,321 drug-tolerant controls from epilepsy cohorts of northern European and Han Chinese descent. Results from each cohort were meta-analyzed. Results We report an association between a rare variant in the complement factor H–related 4 (CFHR4) gene and phenytoin-induced MPE in Europeans (p = 4.5 × 10–11; odds ratio [95% confidence interval] 7 [3.2–16]). This variant is in complete linkage disequilibrium with a missense variant (N1050Y) in the complement factor H (CFH) gene. In addition, our results reinforce the association between HLA-A*31:01 and carbamazepine hypersensitivity. We did not identify significant genetic associations with MPE among Han Chinese patients. Conclusions The identification of genetic predictors of MPE in CFHR4 and CFH, members of the complement factor H–related protein family, suggest a new link between regulation of the complement system alternative pathway and phenytoin-induced hypersensitivity in European-ancestral patients., This study was not industry-sponsored. The work was supported by a grant from the European Commission (7th Framework Programme Grant 279062, EpiPGX). M.M.C. and G.L.C. are supported by Science Foundation Ireland, grant 13/CDA/2223, and an RCSI seed funding grant GA 14-1899. This project was supported by the General Research Funds (HKU7623/08M and HKU7747/07M to S.C., CUHK4466/06M to P.K.) and Health and Medical Research Fund (HMRF 01120086 to P.K.) from Hong Kong. Some results presented in this article were prepared using the HPC facilities of the University of Luxembourg. This work was partly undertaken at UCLH/UCL, which received a proportion of funding from the Department of Health's NIHR Biomedical Research Centres funding scheme (J.W.S., S.M.S.). The work was also supported by the Epilepsy Society, UK (J.W.S., S.M.S.), by the foundation “no epilep,” the German Chapter of the ILAE (DGfE) (both to H.L.). F.C. and I.L.-C. are supported by Fundação de Amparo à Pesquisa do Estado de São Paulo, Brazil, through grant 2013/07559-3. J.E.Z. and M.P. thank the NHS Chair of Pharmacogenetics programme and MRC Centre for Drug Safety Science for support in Liverpool. B.C.C. and C.J.D.R. are supported by the Canadian Institutes of Health Research (CIHR) Drug Safety and Effectiveness Network (FRN-117588), the Canada Foundation for Innovation and the Canadian Dermatology Foundation. G.E.B.W. is supported by a CIHR Fellowship. The funders of the study had no role in the study design, data collection, data analysis, data interpretation, or writing of the report. M.M.C., H.G., and G.L.C. had full access to all the data in the study and the corresponding authors had final responsibility for the decision to submit for publication. The Article Processing Charge was funded by the European Commission OpenAIRE2020 project.

Published
2017
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