12 results on '"Chontelle King"'
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2. Developmental and epileptic encephalopathy: Personal utility of a genetic diagnosis for families
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Jennifer S. Jeffrey, Janet Leathem, Chontelle King, Heather C. Mefford, Kirsty Ross, and Lynette G. Sadleir
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caregiver ,family impact ,genetics ,psychological well‐being ,qualitative ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Objectives Identifying genetic pathogenic variants improves clinical outcomes for children with developmental and epileptic encephalopathy (DEE) by directing therapy and enabling accurate reproductive and prognostic information for families. We aimed to explore the additional personal utility of receiving a genetic diagnosis for families. Methods Semi‐structured interviews were conducted with fifteen families of children with a DEE who had received a genetic diagnosis. The interviews stimulated discussion focusing on the impact of receiving a genetic diagnosis for the family. Interview transcripts were analyzed using the six‐step systematic process of interpretative phenomenological analysis (IPA). Results Three key themes were identified: “Importance of the label,” “Relief to end the diagnostic journey,” and “Factors that influence personal utility.” Families reported that receiving a genetic label improved their knowledge about the likely trajectory of the DEE, increased their hope for the future, and helped them communicate with others. The relief of finally having an answer for the cause of their child's DEE alleviated parental guilt and self‐blame as well as helped families to process their grief and move forward. Delay in receipt of a genetic diagnosis diluted its psychological impact. Significance To date, the factors associated with the personal utility of a genetic diagnosis for DEEs have been under appreciated. This study demonstrates that identifying a genetic diagnosis for a child's DEE can be a psychological turning point for families. A genetic result has the potential to set these families on an adaptive path toward better quality of life through increased understanding, social connection, and support. Early access to genetic testing is important as it not only increases clinical utility, but also increases personal utility with early mitigation of family stress, trauma, and negative experiences.
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- 2021
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3. Developmental and epileptic encephalopathy: Personal utility of a genetic diagnosis for families
- Author
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Kirsty Ross, Jennifer S Jeffrey, Heather C Mefford, Janet Leathem, Chontelle King, and Lynette G. Sadleir
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Adult ,Male ,Parents ,Adolescent ,media_common.quotation_subject ,lcsh:RC346-429 ,Interviews as Topic ,Young Adult ,Quality of life (healthcare) ,psychological well‐being ,medicine ,Humans ,Genetic Predisposition to Disease ,genetics ,Genetic Testing ,Child ,Set (psychology) ,caregiver ,lcsh:Neurology. Diseases of the nervous system ,media_common ,Genetic testing ,Receipt ,Brain Diseases ,Interpretative phenomenological analysis ,medicine.diagnostic_test ,Infant, Newborn ,Infant ,family impact ,Neurology ,Neurodevelopmental Disorders ,Child, Preschool ,Psychological well-being ,qualitative ,Full‐length Original Research ,Female ,Grief ,Systematic process ,Neurology (clinical) ,Psychology ,Epileptic Syndromes ,Clinical psychology - Abstract
Objectives Identifying genetic pathogenic variants improves clinical outcomes for children with developmental and epileptic encephalopathy (DEE) by directing therapy and enabling accurate reproductive and prognostic information for families. We aimed to explore the additional personal utility of receiving a genetic diagnosis for families. Methods Semi‐structured interviews were conducted with fifteen families of children with a DEE who had received a genetic diagnosis. The interviews stimulated discussion focusing on the impact of receiving a genetic diagnosis for the family. Interview transcripts were analyzed using the six‐step systematic process of interpretative phenomenological analysis (IPA). Results Three key themes were identified: “Importance of the label,” “Relief to end the diagnostic journey,” and “Factors that influence personal utility.” Families reported that receiving a genetic label improved their knowledge about the likely trajectory of the DEE, increased their hope for the future, and helped them communicate with others. The relief of finally having an answer for the cause of their child's DEE alleviated parental guilt and self‐blame as well as helped families to process their grief and move forward. Delay in receipt of a genetic diagnosis diluted its psychological impact. Significance To date, the factors associated with the personal utility of a genetic diagnosis for DEEs have been under appreciated. This study demonstrates that identifying a genetic diagnosis for a child's DEE can be a psychological turning point for families. A genetic result has the potential to set these families on an adaptive path toward better quality of life through increased understanding, social connection, and support. Early access to genetic testing is important as it not only increases clinical utility, but also increases personal utility with early mitigation of family stress, trauma, and negative experiences.
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- 2021
4. Levetiracetam efficacy in PCDH19 Girls Clustering Epilepsy
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Jozef Gecz, Heather C Mefford, Chontelle King, Kristy L. Kolc, Ingrid E. Scheffer, Russell C. Dale, and Lynette G. Sadleir
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Adult ,Pediatrics ,medicine.medical_specialty ,Levetiracetam ,Adolescent ,Placebo-controlled study ,Cohort Studies ,Young Adult ,03 medical and health sciences ,Epilepsy ,0302 clinical medicine ,030225 pediatrics ,Intellectual disability ,medicine ,Humans ,Young adult ,Child ,Retrospective Studies ,business.industry ,Infant ,Retrospective cohort study ,General Medicine ,Cadherins ,medicine.disease ,Protocadherins ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Cohort ,Anticonvulsants ,Female ,Neurology (clinical) ,business ,Spasms, Infantile ,030217 neurology & neurosurgery ,Cohort study ,medicine.drug - Abstract
Background PCDH19 Girls clustering epilepsy (GCE) has a phenotypic spectrum that includes developmental and epileptic encephalopathy. PCDH19-GCE presents with clusters of seizures in the first years of life. Although patients typically outgrow their seizures, many are left with intellectual disability. Here we retrospectively assess the effect of levetiracetam in two independent cohorts of females with PCDH19-GCE. Methods Cohort A was identified by searching our epilepsy genetics research database for girls with PCDH19-GCE who had trialled levetiracetam. Cohort B consisted of girls aged 2 years or older, including women, participating in an international online questionnaire. Information regarding seizure frequency and levetiracetam use was obtained by in-person patient interview and review of clinical records for cohort A, and by patient report for cohort B. Results Cohort A consisted of 17 females, aged 3–37 years, who had a trial of levetiracetam at an average age of 10.7 years. 13/17 females became seizure free for >12 months; while 10/17 remained seizure free for >24 months. Cohort B comprised 62 females, aged 1.5–41 years. 26/62 became seizure free for >12 months, and 19/62 for >24 months on levetiracetam therapy. Discussion Levetiracetam was effective in two cohorts of females with PCDH19-GCE where 42% and 76% of females became seizure free for >12 months, respectively. Levetiracetam is an effective therapy for females with PCDH19-GCE and should be considered early in the management of the highly refractory clusters of seizures that characterise this genetic disease.
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- 2020
5. Distinct gene-set burden patterns underlie common generalized and focal epilepsies
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Mahmoud Koko, Roland Krause, Thomas Sander, Dheeraj Reddy Bobbili, Michael Nothnagel, Patrick May, Holger Lerche, Yen-Chen Anne Feng, Daniel P Howrigan, Liam E Abbott, Katherine Tashman, Felecia Cerrato, Tarjinder Singh, Henrike Heyne, Andrea Byrnes, Claire Churchhouse, Nick Watts, Matthew Solomonson, Dennis Lal, Erin L Heinzen, Ryan S Dhindsa, Kate E Stanley, Gianpiero L Cavalleri, Hakon Hakonarson, Ingo Helbig, Sarah Weckhuysen, Slavé Petrovski, Sitharthan Kamalakaran, Sanjay M Sisodiya, Patrick Cossette, Chris Cotsapas, Peter DeJonghe, Tracy Dixon-Salazar, Renzo Guerrini, Patrick Kwan, Anthony G Marson, Randy Stewart, Chantal Depondt, Dennis J Dlugos, Ingrid E Scheffer, Pasquale Striano, Catharine Freyer, Kevin McKenna, Brigid M Regan, Susannah T Bellows, Costin Leu, Caitlin A Bennett, Esther M C Johns, Alexandra Macdonald, Hannah Shilling, Rosemary Burgess, Dorien Weckhuysen, Melanie Bahlo, Terence J O'Brien, Marian Todaro, Hannah Stamberger, Danielle M Andrade, Tara R Sadoway, Kelly Mo, Heinz Krestel, Sabina Gallati, Savvas S Papacostas, Ioanna Kousiappa, George A Tanteles, Katalin Štěrbová, Markéta Vlčková, Lucie Sedláčková, Petra Laššuthová, Karl Martin Klein, Felix Rosenow, Philipp S Reif, Susanne Knake, Wolfram S Kunz, Gábor Zsurka, Christian E Elger, Jürgen Bauer, Michael Rademacher, Manuela Pendziwiat, Hiltrud Muhle, Annika Rademacher, Andreas vanBaalen, Sarah vonSpiczak, Ulrich Stephani, Zaid Afawi, Amos D Korczyn, Moien Kanaan, Christina Canavati, Gerhard Kurlemann, Karen Müller-Schlüter, Gerhard Kluger, Martin Häusler, Ilan Blatt, Johannes R Lemke, Ilona Krey, Yvonne G Weber, Stefan Wolking, Felicitas Becker, Christian Hengsbach, Sarah Rau, Ana F Maisch, Bernhard J Steinhoff, Andreas Schulze-Bonhage, Susanne Schubert-Bast, Herbert Schreiber, Ingo Borggräfe, Christoph J Schankin, Thomas Mayer, Rudolf Korinthenberg, Knut Brockmann, Dieter Dennig, Rene Madeleyn, Reetta Kälviäinen, Pia Auvinen, Anni Saarela, Tarja Linnankivi, Anna-Elina Lehesjoki, Mark I Rees, Seo-Kyung Chung, William O Pickrell, Robert Powell, Natascha Schneider, Simona Balestrini, Sara Zagaglia, Vera Braatz, Michael R Johnson, Pauls Auce, Graeme J Sills, Larry W Baum, Pak C Sham, Stacey S Cherny, Colin H T Lui, Nina Barišić, Norman Delanty, Colin P Doherty, Arif Shukralla, Mark McCormack, Hany El-Naggar, Laura Canafoglia, Silvana Franceschetti, Barbara Castellotti, Tiziana Granata, Federico Zara, Michele Iacomino, Francesca Madia, Maria Stella Vari, Maria Margherita Mancardi, Vincenzo Salpietro, Francesca Bisulli, Paolo Tinuper, Laura Licchetta, Tommaso Pippucci, Carlotta Stipa, Raffaella Minardi, Antonio Gambardella, Angelo Labate, Grazia Annesi, Lorella Manna, Monica Gagliardi, Elena Parrini, Davide Mei, Annalisa Vetro, Claudia Bianchini, Martino Montomoli, Viola Doccini, Carla Marini, Toshimitsu Suzuki, Yushi Inoue, Kazuhiro Yamakawa, Birute Tumiene, Lynette G Sadleir, Chontelle King, Emily Mountier, Hande S Caglayan, Mutluay Arslan, Zuhal Yapıcı, Uluc Yis, Pınar Topaloglu, Bulent Kara, Dilsad Turkdogan, Aslı Gundogdu-Eken, Nerses Bebek, Sibel Uğur-İşeri, Betül Baykan, Barış Salman, Garen Haryanyan, Emrah Yücesan, Yeşim Kesim, Çiğdem Özkara, Annapurna Poduri, Beth R Shiedley, Catherine Shain, Russell J Buono, Thomas N Ferraro, Michael R Sperling, Warren Lo, Michael Privitera, Jacqueline A French, Steven Schachter, Ruben I Kuzniecky, Orrin Devinsky, Manu Hegde, Pouya Khankhanian, Katherine L Helbig, Colin A Ellis, Gianfranco Spalletta, Fabrizio Piras, Federica Piras, Tommaso Gili, Valentina Ciullo, Andreas Reif, Andrew McQuillin, Nick Bass, Andrew McIntosh, Douglas Blackwood, Mandy Johnstone, Aarno Palotie, Michele T Pato, Carlos N Pato, Evelyn J Bromet, Celia Barreto Carvalho, Eric D Achtyes, Maria Helena Azevedo, Roman Kotov, Douglas S Lehrer, Dolores Malaspina, Stephen R Marder, Helena Medeiros, Christopher P Morley, Diana O Perkins, Janet L Sobell, Peter F Buckley, Fabio Macciardi, Mark H Rapaport, James A Knowles, Genomic Psychiatry Cohort, Ayman H Fanous, Steven A McCarroll, Namrata Gupta, Stacey B Gabriel, Mark J Daly, Eric S Lander, Daniel H Lowenstein, David B Goldstein, Samuel F Berkovic, Benjamin M Neale, Epi25 Collaborative, Koko M., Krause R., Sander T., Bobbili D.R., Nothnagel M., May P., Lerche H., Bisulli F., Tinuper P., Pippucci T., Abbott, Liam E., Hengsbach, Christian, Rau, Sarah, Maisch, Ana F., Steinhoff, Bernhard J., Schulze-Bonhage, Andreas, Schubert-Bast, Susanne, Schreiber, Herbert, Borggräfe, Ingo, Schankin, Christoph J., Mayer, Thomas, Tashman, Katherine, Korinthenberg, Rudolf, Brockmann, Knut, Kurlemann, Gerhard, Dennig, Dieter, Madeleyn, Rene, Kälviäinen, Reetta, Auvinen, Pia, Saarela, Anni, Linnankivi, Tarja, Lehesjoki, Anna-Elina, Cerrato, Felecia, Rees, Mark I., Chung, Seo-Kyung, Pickrell, William O., Powell, Robert, Schneider, Natascha, Balestrini, Simona, Zagaglia, Sara, Braatz, Vera, Johnson, Michael R., Auce, Pauls, Singh, Tarjinder, Sills, Graeme J., Baum, Larry W., Sham, Pak C., Cherny, Stacey S., Lui, Colin H. T., Barišic, Nina, Delanty, Norman, Doherty, Colin P., Shukralla, Arif, McCormack, Mark, Heyne, Henrike, El-Naggar, Hany, Canafoglia, Laura, Franceschetti, Silvana, Castellotti, Barbara, Granata, Tiziana, Zara, Federico, Iacomino, Michele, Madia, Francesca, Vari, Maria Stella, Mancardi, Maria Margherita, Byrnes, Andrea, Salpietro, Vincenzo, Bisulli, Francesca, Tinuper, Paolo, Licchetta, Laura, Pippucci, Tommaso, Stipa, Carlotta, Minardi, Raffaella, Gambardella, Antonio, Labate, Angelo, Annesi, Grazia, Churchhouse, Claire, Manna, Lorella, Gagliardi, Monica, Parrini, Elena, Mei, Davide, Vetro, Annalisa, Bianchini, Claudia, Montomoli, Martino, Doccini, Viola, Marini, Carla, Suzuki, Toshimitsu, Watts, Nick, Inoue, Yushi, Yamakawa, Kazuhiro, Tumiene, Birute, Sadleir, Lynette G., King, Chontelle, Mountier, Emily, Caglayan, Hande S., Arslan, Mutluay, Yapici, Zuhal, Yis, Uluc, Solomonson, Matthew, Topaloglu, Pinar, Kara, Bulent, Turkdogan, Dilsad, Gundogdu-Eken, Asli, Bebek, Nerses, Ugur-Iseri, Sibel, Baykan, Betül, Salman, Baris, Haryanyan, Garen, Yücesan, Emrah, Lal, Dennis, Kesim, Yesim, Özkara, Çigdem, Poduri, Annapurna, Shiedley, Beth R., Shain, Catherine, Buono, Russell J., Ferraro, Thomas N., Sperling, Michael R., Lo, Warren, Privitera, Michael, Heinzen, Erin L., French, Jacqueline A., Schachter, Steven, Kuzniecky, Ruben I., Devinsky, Orrin, Hegde, Manu, Khankhanian, Pouya, Helbig, Katherine L., Ellis, Colin A., Spalletta, Gianfranco, Piras, Fabrizio, Dhindsa, Ryan S., Piras, Federica, Gili, Tommaso, Ciullo, Valentina, Reif, Andreas, McQuillin, Andrew, Bass, Nick, McIntosh, Andrew, Blackwood, Douglas, Johnstone, Mandy, Palotie, Aarno, Stanley, Kate E., Pato, Michele T., Pato, Carlos N., Bromet, Evelyn J., Carvalho, Celia Barreto, Achtyes, Eric D., Azevedo, Maria Helena, Kotov, Roman, Lehrer, Douglas S., Malaspina, Dolores, Marder, Stephen R., Cavalleri, Gianpiero L., Medeiros, Helena, Morley, Christopher P., Perkins, Diana O., Sobell, Janet L., Buckley, Peter F., Macciardi, Fabio, Rapaport, Mark H., Knowles, James A., Cohort, Genomic Psychiatry, Fanous, Ayman H., Hakonarson, Hakon, McCarroll, Steven A., Gupta, Namrata, Gabriel, Stacey B., Daly, Mark J., Lander, Eric S., Lowenstein, Daniel H., Goldstein, David B., Lerche, Holger, Berkovic, Samuel F., Neale, Benjamin M., Helbig, Ingo, Krause, Roland, May, Patrick, Weckhuysen, Sarah, Petrovski, Slavé, Kamalakaran, Sitharthan, Sisodiya, Sanjay M., Cossette, Patrick, Cotsapas, Chris, DeJonghe, Peter, Dixon-Salazar, Tracy, Guerrini, Renzo, Kwan, Patrick, Marson, Anthony G., Stewart, Randy, Depondt, Chantal, Dlugos, Dennis J., Scheffer, Ingrid E., Striano, Pasquale, Freyer, Catharine, McKenna, Kevin, Regan, Brigid M., Bellows, Susannah T., Leu, Costin, Bennett, Caitlin A., Johns, Esther M. C., Macdonald, Alexandra, Shilling, Hannah, Burgess, Rosemary, Weckhuysen, Dorien, Bahlo, Melanie, O'Brien, Terence J., Todaro, Marian, Stamberger, Hannah, Andrade, Danielle M., Sadoway, Tara R., Mo, Kelly, Krestel, Heinz, Gallati, Sabina, Papacostas, Savvas S., Kousiappa, Ioanna, Tanteles, George A., Šterbová, Katalin, Vlcková, Markéta, Sedlácková, Lucie, Laššuthová, Petra, Klein, Karl Martin, Rosenow, Felix, Reif, Philipp S., Knake, Susanne, Kunz, Wolfram S., Zsurka, Gábor, Elger, Christian E., Bauer, Jürgen, Rademacher, Michael, Feng, Yen-Chen Anne, Pendziwiat, Manuela, Muhle, Hiltrud, Rademacher, Annika, van Baalen, Andreas, von Spiczak, Sarah, Stephani, Ulrich, Afawi, Zaid, Korczyn, Amos D., Kanaan, Moien, Canavati, Christina, Howrigan, Daniel P., Müller-Schlüter, Karen, Kluger, Gerhard, Häusler, Martin, Blatt, Ilan, Lemke, Johannes R., Krey, Ilona, Weber, Yvonne G., Wolking, Stefan, Becker, Felicitas, DFG Research Unit FOR-2715 (Germany), FNR (Luxembourg), NHGRI (US), NHLBI (US), DAAD (Germany). [sponsor], and Luxembourg Centre for Systems Biomedicine (LCSB): Bioinformatics Core (R. Schneider Group) [research center]
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Exome sequencing ,Male ,Medicine (General) ,Neurology [D14] [Human health sciences] ,Gene-set ,Genome-wide association study ,Disease ,Biology ,Epileptogenesis ,General Biochemistry, Genetics and Molecular Biology ,Whole Exome Sequencing ,Epilepsy ,R5-920 ,medicine ,Missense mutation ,Humans ,Exome ,Genetic Predisposition to Disease ,Gene ,Genetic association ,Ultra-rare variant ,Genetics ,Neurologie [D14] [Sciences de la santé humaine] ,Burden analysis ,Genetic Variation ,General Medicine ,medicine.disease ,Ultra-rare variants ,Gene-sets ,Case-Control Studies ,Medicine ,epilepsy ,Epilepsy, Generalized ,Female ,Genetics & genetic processes [F10] [Life sciences] ,Epilepsies, Partial ,Human medicine ,Burden analysi ,Génétique & processus génétiques [F10] [Sciences du vivant] ,Case-Control Studie ,Research Paper ,Genome-Wide Association Study ,Human - Abstract
EBioMedicine 72, 103588 (2021). doi:10.1016/j.ebiom.2021.103588, Published by Elsevier, Amsterdam [u.a.]
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- 2021
6. Sub-genic intolerance, ClinVar, and the epilepsies: A whole-exome sequencing study of 29,165 individuals
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Joshua E. Motelow, Gundula Povysil, Ryan S. Dhindsa, Kate E. Stanley, Andrew S. Al- len, Yen-Chen Anne Feng, Daniel P. Howrigan, Liam E. Abbott, Ka- therine Tashman, Felecia Cerrato, Caroline Cusick, Tarjinder Singh, Henrike Heyne, Andrea E. Byrnes, Claire Churchhouse, Nick Watts, Matthew Solomonson, Dennis Lal, Namrata Gupta, Benjamin M. Neale, Gianpiero L. Cavalleri, Patrick Cossette, Chris Cotsapas, Peter De Jonghe, Tracy Dixon-Salazar, Renzo Guerrini, Hakon Hakonarson, Erin L. Heinzen, Ingo Helbig, Patrick Kwan, Anthony G. Marson, Slave ? Petrovski, Sitharthan Kamalakaran, Sanjay M. Sisodiya, Randy Stewart, Sarah Weckhuysen, Chantal Depondt, Dennis J. Dlugos, Ingrid E. Scheffer, Pasquale Striano, Catharine Freyer, Roland Krause, Patrick May, Kevin McKenna, Brigid M. Regan, Caitlin A. Bennett, Costin Leu, Stephanie L. Leech, Terence J. O'Brien, Marian Todaro, Hannah Stamberger, Danielle M. Andrade, Quratulain Zulfiqar Ali, Tara R. Sadoway, Heinz Krestel, Andre ? Schaller, Savvas S. Papacostas, Ioanna Kou- siappa, George A. Tanteles, Yiolanda Christou, Katalin Sterbova ?, Marke ? ta Vlckova ?, Lucie Sedlackova, Petra Lassuthova ?, Karl Martin Klein, Felix Rosenow, Philipp S. Reif, Susanne Knake, Bernd A. Neubauer, Friedrich Zimprich, Martha Feucht, Eva M. Reinthaler, Wolfram S. Kunz, Ga ?bor Zsurka, Rainer Surges, Tobias Baumgart- ner, Randi von Wrede, Manuela Pendziwiat, Hiltrud Muhle, An- nika Rademacher, Andreas van Baalen, Sarah von Spiczak, Ulrich Stephani, Zaid Afawi, Amos D. Korczyn, Moien Kanaan, Christina Canavati, Gerhard Kurlemann, Karen Mu ?ller-Schlu ?ter, Gerhard Kluger, Martin Ha ?usler, Ilan Blatt, Johannes R. Lemke, Ilona Krey, Yvonne G. Weber, Stefan Wolking, Felicitas Becker, Stephan Lauxmann, Christian Boßelmann, Josua Kegele, Christian Hengs- bach, Sarah Rau, Bernhard J. Steinhoff, Andreas Schulze-Bonhage, IngoBorggra ?fe, ChristophJ.Schankin, SusanneSchubert-Bast, Herbert Schreiber, Thomas Mayer, Rudolf Korinthenberg, Knut Brockmann, Markus Wolff, Dieter Dennig, Rene Madeleyn, Reetta Ka ?lvia ?inen, Anni Saarela, Oskari Timonen, Tarja Linnankivi, Anna-Elina Lehesjoki, Sylvain Rheims, Gaetan Lesca, Philippe Ryvlin, Louis Maillard, Luc Valton, Philippe Derambure, Fabrice Bartolomei, Edouard Hirsch, Ve ?ronique Michel, Francine Chas- soux, Mark I. Rees, Seo-Kyung Chung, William O. Pickrell, Robert Powell, Mark D. Baker, Beata Fonferko-Shadrach, Charlotte Law- thom, Joseph Anderson, Natascha Schneider, Simona Balestrini, Sara Zagaglia, Vera Braatz, Michael R. Johnson, Pauls Auce, Graeme J. Sills, Larry W. Baum, Pak C. Sham, Stacey S. Cherny, Colin H.T. Lui, Norman Delanty, Colin P. Doherty, Arif Shukralla, Hany El-Naggar, Peter Widdess-Walsh, Nina Barisic, Laura 12 The American Journal of Human Genetics 108, 1-18, June 3, 2021 Please cite this article in press as: Epi25 Collaborative, Sub-genic intolerance, ClinVar, the epilepsies: A whole-exome sequencing study of 29, 165 individuals, The American Journal of Human Genetics (2021), https://doi.org/10.1016/j.ajhg.2021.04.009 Canafoglia, Silvana Franceschetti, Barbara Castellotti, Tiziana Granata, Francesca Ragona, Federico Zara, Michele Iacomino, An- tonella Riva, Francesca Madia, Maria Stella Vari, Vincenzo Salpie- tro, Marcello Scala, Maria Margherita Mancardi, Lino Nobili, Elisa- betta Amadori, Thea Giacomini, Francesca Bisulli, Tommaso Pippucci, Laura Licchetta, Raffaella Minardi, Paolo Tinuper, Lor- enzo Muccioli, Barbara Mostacci, Antonio Gambardella, Angelo Labate, Grazia Annesi, Lorella Manna, Monica Gagliardi, Elena Parrini, Davide Mei, Annalisa Vetro, Claudia Bianchini, Martino Montomoli, Viola Doccini, Carmen Barba, Shinichi Hirose, At- sushi Ishii, Toshimitsu Suzuki, Yushi Inoue, Kazuhiro Yamakawa, Ahmad Beydoun, Wassim Nasreddine, Nathalie Khoueiry Zgheib, Birute Tumiene, Algirdas Utkus, Lynette G. Sadleir, Chontelle King, S. Hande Caglayan, Mutluay Arslan, Zuhal Yap?c?, P?nar To- paloglu, Bulent Kara, Uluc Yis, Dilsad Turkdogan, Asl? Gun- dogdu-Eken, Nerses Bebek, Meng-Han Tsai, Chen-Jui Ho, Chih- Hsiang Lin, Kuang-Lin Lin, I-Jun Chou, Annapurna Poduri, Beth R. Shiedley, Catherine Shain, Jeffrey L. Noebels, Alicia Goldman, Robyn M. Busch, Lara Jehi, Imad M. Najm, Lisa Ferguson, Jean Khoury, Tracy A. Glauser, Peggy O. Clark, Russell J. Buono, Thomas N. Ferraro, Michael R. Sperling, Warren Lo, Michael Privitera, Jac- queline A. French, Steven Schachter, Ruben I. Kuzniecky, Orrin Devinsky, Manu Hegde, David A. Greenberg, Colin A. Ellis, Ethan Goldberg, Katherine L. Helbig, Mahgenn Cosico, Priya Vaidis- waran, Eryn Fitch, Samuel F. Berkovic, Holger Lerche, Daniel H. Lowenstein, David B. Goldstein., Motelow J.E., Povysil G., Dhindsa R.S., Stanley K.E., Allen A.S., Feng Y.-C.A., Howrigan D.P., Abbott L.E., Tashman K., Cerrato F., Cusick C., Singh T., Heyne H., Byrnes A.E., Churchhouse C., Watts N., Solomonson M., Lal D., Gupta N., Neale B.M., Cavalleri G.L., Cossette P., Cotsapas C., De Jonghe P., Dixon-Salazar T., Guerrini R., Hakonarson H., Heinzen E.L., Helbig I., Kwan P., Marson A.G., Petrovski S., Kamalakaran S., Sisodiya S.M., Stewart R., Weckhuysen S., Depondt C., Dlugos D.J., Scheffer I.E., Striano P., Freyer C., Krause R., May P., McKenna K., Regan B.M., Bennett C.A., Leu C., Leech S.L., O'Brien T.J., Todaro M., Stamberger H., Andrade D.M., Ali Q.Z., Sadoway T.R., Krestel H., Schaller A., Papacostas S.S., Kousiappa I., Tanteles G.A., Christou Y., Sterbova K., Vlckova M., Sedlackova L., Lassuthova P., Klein K.M., Rosenow F., Reif P.S., Knake S., Neubauer B.A., Zimprich F., Feucht M., Reinthaler E.M., Kunz W.S., Zsurka G., Surges R., Baumgartner T., von Wrede R., Pendziwiat M., Muhle H., Rademacher A., van Baalen A., von Spiczak S., Stephani U., Afawi Z., Korczyn A.D., Kanaan M., Canavati C., Kurlemann G., Muller-Schluter K., Kluger G., Hausler M., Blatt I., Lemke J.R., Krey I., Weber Y.G., Wolking S., Becker F., Lauxmann S., Bosselmann C., Kegele J., Hengsbach C., Rau S., Steinhoff B.J., Schulze-Bonhage A., Borggrafe I., Schankin C.J., Schubert-Bast S., Schreiber H., Mayer T., Korinthenberg R., Brockmann K., Wolff M., Dennig D., Madeleyn R., Kalviainen R., Saarela A., Timonen O., Linnankivi T., Lehesjoki A.-E., Rheims S., Lesca G., Ryvlin P., Maillard L., Valton L., Derambure P., Bartolomei F., Hirsch E., Michel V., Chassoux F., Rees M.I., Chung S.-K., Pickrell W.O., Powell R., Baker M.D., Fonferko-Shadrach B., Lawthom C., Anderson J., Schneider N., Balestrini S., Zagaglia S., Braatz V., Johnson M.R., Auce P., Sills G.J., Baum L.W., Sham P.C., Cherny S.S., Lui C.H.T., Delanty N., Doherty C.P., Shukralla A., El-Naggar H., Widdess-Walsh P., Barisic N., Canafoglia L., Franceschetti S., Castellotti B., Granata T., Ragona F., Zara F., Iacomino M., Riva A., Madia F., Vari M.S., Salpietro V., Scala M., Mancardi M.M., Nobili L., Amadori E., Giacomini T., Bisulli F., Pippucci T., Licchetta L., Minardi R., Tinuper P., Muccioli L., Mostacci B., Gambardella A., Labate A., Annesi G., Manna L., Gagliardi M., Parrini E., Mei D., Vetro A., Bianchini C., Montomoli M., Doccini V., Barba C., Hirose S., Ishii A., Suzuki T., Inoue Y., Yamakawa K., Beydoun A., Nasreddine W., Khoueiry Zgheib N., Tumiene B., Utkus A., Sadleir L.G., King C., Caglayan S.H., Arslan M., Yapici Z., Topaloglu P., Kara B., Yis U., Turkdogan D., Gundogdu-Eken A., Bebek N., Tsai M.-H., Ho C.-J., Lin C.-H., Lin K.-L., Chou I.-J., Poduri A., Shiedley B.R., Shain C., Noebels J.L., Goldman A., Busch R.M., Jehi L., Najm I.M., Ferguson L., Khoury J., Glauser T.A., Clark P.O., Buono R.J., Ferraro T.N., Sperling M.R., Lo W., Privitera M., French J.A., Schachter S., Kuzniecky R.I., Devinsky O., Hegde M., Greenberg D.A., Ellis C.A., Goldberg E., Helbig K.L., Cosico M., Vaidiswaran P., Fitch E., Berkovic S.F., Lerche H., Lowenstein D.H., Goldstein D.B., Epi25 Collaborative, Institut de Neurosciences des Systèmes (INS), and Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)
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0301 basic medicine ,focal epilepsy ,Whole Exome Sequencing ,Cohort Studies ,Epilepsy ,0302 clinical medicine ,Genetic Marker ,Missense mutation ,Exome ,whole-exome sequencing ,generalized epilepsy ,ComputingMilieux_MISCELLANEOUS ,Genetics (clinical) ,Exome sequencing ,seizures ,Genetics ,ClinVar ,Phenotype ,epileptic encephalopathy ,Epi25 ,intolerance ,Case-Control Studie ,Human ,Genetic Markers ,seizure ,Disease Association ,Biology ,Article ,03 medical and health sciences ,Exome Sequencing ,medicine ,Humans ,Genetic Predisposition to Disease ,Genetic Testing ,Generalized epilepsy ,Gene ,Louvain ,[SCCO.NEUR]Cognitive science/Neuroscience ,Correction ,Genetic Variation ,medicine.disease ,epilepsy ,Human genetics ,030104 developmental biology ,Case-Control Studies ,Human medicine ,Cohort Studie ,Genetic generalized epilepsy ,030217 neurology & neurosurgery - Abstract
Summary Both mild and severe epilepsies are influenced by variants in the same genes, yet an explanation for the resulting phenotypic variation is unknown. As part of the ongoing Epi25 Collaboration, we performed a whole-exome sequencing analysis of 13,487 epilepsy-affected individuals and 15,678 control individuals. While prior Epi25 studies focused on gene-based collapsing analyses, we asked how the pattern of variation within genes differs by epilepsy type. Specifically, we compared the genetic architectures of severe developmental and epileptic encephalopathies (DEEs) and two generally less severe epilepsies, genetic generalized epilepsy and non-acquired focal epilepsy (NAFE). Our gene-based rare variant collapsing analysis used geographic ancestry-based clustering that included broader ancestries than previously possible and revealed novel associations. Using the missense intolerance ratio (MTR), we found that variants in DEE-affected individuals are in significantly more intolerant genic sub-regions than those in NAFE-affected individuals. Only previously reported pathogenic variants absent in available genomic datasets showed a significant burden in epilepsy-affected individuals compared with control individuals, and the ultra-rare pathogenic variants associated with DEE were located in more intolerant genic sub-regions than variants associated with non-DEE epilepsies. MTR filtering improved the yield of ultra-rare pathogenic variants in affected individuals compared with control individuals. Finally, analysis of variants in genes without a disease association revealed a significant burden of loss-of-function variants in the genes most intolerant to such variation, indicating additional epilepsy-risk genes yet to be discovered. Taken together, our study suggests that genic and sub-genic intolerance are critical characteristics for interpreting the effects of variation in genes that influence epilepsy.
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- 2021
7. Inherited RORB pathogenic variants: Overlap of photosensitive genetic generalized and occipital lobe epilepsy
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Sarah Paterson, Michael S. Hildebrand, Matthew Coleman, Heather C Mefford, Stuart Mossman, Samuel F. Berkovic, Chontelle King, Ingrid E. Scheffer, Saul A. Mullen, Melanie Bahlo, Guillem de Valles-Ibáñez, Lynette G. Sadleir, and John Nguyen
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0301 basic medicine ,Genetics ,education.field_of_study ,business.industry ,Population ,Spike-and-wave ,medicine.disease ,03 medical and health sciences ,Epilepsy ,Exon ,030104 developmental biology ,0302 clinical medicine ,Neurology ,Occipital lobe epilepsy ,Intellectual disability ,Epilepsy syndromes ,Medicine ,Missense mutation ,Neurology (clinical) ,business ,education ,030217 neurology & neurosurgery - Abstract
Variants in RORB have been reported in eight individuals with epilepsy, with phenotypes ranging from eyelid myoclonia with absence epilepsy to developmental and epileptic encephalopathies. We identified novel RORB variants in 11 affected individuals from four families. One was from whole genome sequencing and three were from RORB screening of three epilepsy cohorts: developmental and epileptic encephalopathies (n = 1021), overlap of generalized and occipital epilepsy (n = 84), and photosensitivity (n = 123). Following interviews and review of medical records, individuals' seizure and epilepsy syndromes were classified. Three novel missense variants and one exon 3 deletion were predicted to be pathogenic by in silico tools, not found in population databases, and located in key evolutionary conserved domains. Median age at seizure onset was 3.5 years (0.5-10 years). Generalized, predominantly absence and myoclonic, and occipital seizures were seen in all families, often within the same individual (6/11). All individuals with epilepsy were photosensitive, and seven of 11 had cognitive abnormalities. Electroencephalograms showed generalized spike and wave and/or polyspike and wave. Here we show a striking RORB phenotype of overlap of photosensitive generalized and occipital epilepsy in both individuals and families. This is the first report of a gene associated with this overlap of epilepsy syndromes.
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- 2020
8. The epileptology of GNB5 encephalopathy
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Giuseppe Merla, Alison M. Muir, Boris Keren, Natascia Malerba, Chontelle King, Ingrid E. Scheffer, Peter Kannu, Brian H.Y. Chung, Gemma Poke, Mahendranath Moharir, Michele Germano, Carolina Fischinger Moura de Souza, Jasmine L.F. Fung, Guillem de Valles-Ibáñez, Heather C Mefford, Thorsten Stanley, Lynette G. Sadleir, Zhuo Shao, Anne Isabelle Vermersch, Cyril Mignot, Adina Ilea, Cheuk Wing Fung, Suzanne Davis, Poke, G., King, C., Muir, A., de Valles Ibáñez, G., Germano, M., de Souza, C., Fung, J., Chung, B., Fung, Cw, Mignot, C., Ilea, A., Keren, B., Davis, S., Stanley, T., Moharir, M., Kannu, P., Shao, Z., Malerba, N., Merla, G, Mefford, Hc, Scheffer, Ie, and Sadleir, Lg.
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0301 basic medicine ,Male ,Pediatrics ,medicine.medical_specialty ,Adolescent ,Encephalopathy ,03 medical and health sciences ,Epilepsy ,Young Adult ,0302 clinical medicine ,medicine ,Humans ,Child ,Cerebral atrophy ,Brain Diseases ,business.industry ,GTP-Binding Protein beta Subunits ,medicine.disease ,Hypotonia ,Hypsarrhythmia ,Pedigree ,Epileptic spasms ,Burst suppression ,030104 developmental biology ,Neurology ,Child, Preschool ,Cerebellar atrophy ,Female ,Neurology (clinical) ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Pathogenic variants in GNB5 cause an autosomal recessive neurodevelopmental disorder with neonatal sinus bradycardia. Seizures or epilepsy occurred in 10 of 22 previously reported cases, including 6 children from one family. We delineate the epileptology of GNB5 encephalopathy. Our nine patients, including five new patients, were from seven families. Epileptic spasms were the most frequent seizure type, occurring in eight of nine patients, and began at a median age of 3 months (2 months to 3 years). Focal seizures preceded spasms in three children, with onset at 7 days, 11 days, and 4 months. One child presented with convulsive status epilepticus at 6 months. Three children had burst suppression on electroencephalography (EEG), three had hypsarrhythmia, and one evolved from burst suppression to hypsarrhythmia. Background slowing was present in all after age 3 years. Magnetic resonance imaging (MRI) showed cerebral atrophy in one child and cerebellar atrophy in another. All nine had abnormal development prior to seizure onset and ultimately had profound impairment without regression. Hypotonia was present in all, with contractures developing in two older patients. All individuals had biallelic pathogenic variants in GNB5, predicted by in silico tools to result in protein truncation and loss-of-function. GNB5 developmental and epileptic encephalopathy is characterized by epileptic spasms, focal seizures, and profound impairment. Wiley Periodicals, Inc. © 2019 International League Against Epilepsy
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- 2019
9. Ultra-Rare Genetic Variation in the Epilepsies: A Whole-Exome Sequencing Study of 17,606 Individuals
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Yen-Chen Anne Feng, Daniel P. Howrigan, Liam E. Abbott, Katherine Tashman, Felecia Cerrato, Tarjinder Singh, Henrike Heyne, Andrea Byrnes, Claire Churchhouse, Nick Watts, Matthew Solomonson, Dennis Lal, Erin L. Heinzen, Ryan S. Dhindsa, Kate E. Stanley, Gianpiero L. Cavalleri, Hakon Hakonarson, Ingo Helbig, Roland Krause, Patrick May, Sarah Weckhuysen, Slavé Petrovski, Sitharthan Kamalakaran, Sanjay M. Sisodiya, Patrick Cossette, Chris Cotsapas, Peter De Jonghe, Tracy Dixon-Salazar, Renzo Guerrini, Patrick Kwan, Anthony G. Marson, Randy Stewart, Chantal Depondt, Dennis J. Dlugos, Ingrid E. Scheffer, Pasquale Striano, Catharine Freyer, Kevin McKenna, Brigid M. Regan, Susannah T. Bellows, Costin Leu, Caitlin A. Bennett, Esther M.C. Johns, Alexandra Macdonald, Hannah Shilling, Rosemary Burgess, Dorien Weckhuysen, Melanie Bahlo, Terence J. O’Brien, Marian Todaro, Hannah Stamberger, Danielle M. Andrade, Tara R. Sadoway, Kelly Mo, Heinz Krestel, Sabina Gallati, Savvas S. Papacostas, Ioanna Kousiappa, George A. Tanteles, Katalin Štěrbová, Markéta Vlčková, Lucie Sedláčková, Petra Laššuthová, Karl Martin Klein, Felix Rosenow, Philipp S. Reif, Susanne Knake, Wolfram S. Kunz, Gábor Zsurka, Christian E. Elger, Jürgen Bauer, Michael Rademacher, Manuela Pendziwiat, Hiltrud Muhle, Annika Rademacher, Andreas van Baalen, Sarah von Spiczak, Ulrich Stephani, Zaid Afawi, Amos D. Korczyn, Moien Kanaan, Christina Canavati, Gerhard Kurlemann, Karen Müller-Schlüter, Gerhard Kluger, Martin Häusler, Ilan Blatt, Johannes R. Lemke, Ilona Krey, Yvonne G. Weber, Stefan Wolking, Felicitas Becker, Christian Hengsbach, Sarah Rau, Ana F. Maisch, Bernhard J. Steinhoff, Andreas Schulze-Bonhage, Susanne Schubert-Bast, Herbert Schreiber, Ingo Borggräfe, Christoph J. Schankin, Thomas Mayer, Rudolf Korinthenberg, Knut Brockmann, Dieter Dennig, Rene Madeleyn, Reetta Kälviäinen, Pia Auvinen, Anni Saarela, Tarja Linnankivi, Anna-Elina Lehesjoki, Mark I. Rees, Seo-Kyung Chung, William O. Pickrell, Robert Powell, Natascha Schneider, Simona Balestrini, Sara Zagaglia, Vera Braatz, Michael R. Johnson, Pauls Auce, Graeme J. Sills, Larry W. Baum, Pak C. Sham, Stacey S. Cherny, Colin H.T. Lui, Nina Barišić, Norman Delanty, Colin P. Doherty, Arif Shukralla, Mark McCormack, Hany El-Naggar, Laura Canafoglia, Silvana Franceschetti, Barbara Castellotti, Tiziana Granata, Federico Zara, Michele Iacomino, Francesca Madia, Maria Stella Vari, Maria Margherita Mancardi, Vincenzo Salpietro, Francesca Bisulli, Paolo Tinuper, Laura Licchetta, Tommaso Pippucci, Carlotta Stipa, Raffaella Minardi, Antonio Gambardella, Angelo Labate, Grazia Annesi, Lorella Manna, Monica Gagliardi, Elena Parrini, Davide Mei, Annalisa Vetro, Claudia Bianchini, Martino Montomoli, Viola Doccini, Carla Marini, Toshimitsu Suzuki, Yushi Inoue, Kazuhiro Yamakawa, Birute Tumiene, Lynette G. Sadleir, Chontelle King, Emily Mountier, S. Hande Caglayan, Mutluay Arslan, Zuhal Yapıcı, Uluc Yis, Pınar Topaloglu, Bulent Kara, Dilsad Turkdogan, Aslı Gundogdu-Eken, Nerses Bebek, Sibel Uğur-İşeri, Betül Baykan, Barış Salman, Garen Haryanyan, Emrah Yücesan, Yeşim Kesim, Çiğdem Özkara, Annapurna Poduri, Beth R. Shiedley, Catherine Shain, Russell J. Buono, Thomas N. Ferraro, Michael R. Sperling, Warren Lo, Michael Privitera, Jacqueline A. French, Steven Schachter, Ruben I. Kuzniecky, Orrin Devinsky, Manu Hegde, Pouya Khankhanian, Katherine L. Helbig, Colin A. Ellis, Gianfranco Spalletta, Fabrizio Piras, Federica Piras, Tommaso Gili, Valentina Ciullo, Andreas Reif, Andrew McQuillin, Nick Bass, Andrew McIntosh, Douglas Blackwood, Mandy Johnstone, Aarno Palotie, Michele T. Pato, Carlos N. Pato, Evelyn J. Bromet, Celia Barreto Carvalho, Eric D. Achtyes, Maria Helena Azevedo, Roman Kotov, Douglas S. Lehrer, Dolores Malaspina, Stephen R. Marder, Helena Medeiros, Christopher P. Morley, Diana O. Perkins, Janet L. Sobell, Peter F. Buckley, Fabio Macciardi, Mark H. Rapaport, James A. Knowles, Ayman H. Fanous, Steven A. McCarroll, Namrata Gupta, Stacey B. Gabriel, Mark J. Daly, Eric S. Lander, Daniel H. Lowenstein, David B. Goldstein, Holger Lerche, Samuel F. Berkovic, Benjamin M. Neale, Wellcome Trust, Department of Health, Institute of Neurology, UCL, Imperial College Healthcare NHS Trust- BRC Funding, Commission of the European Communities, Medical Research Council (MRC), Feng Y.-C.A., Howrigan D.P., Abbott L.E., Tashman K., Cerrato F., Singh T., Heyne H., Byrnes A., Churchhouse C., Watts N., Solomonson M., Lal D., Heinzen E.L., Dhindsa R.S., Stanley K.E., Cavalleri G.L., Hakonarson H., Helbig I., Krause R., May P., Weckhuysen S., Petrovski S., Kamalakaran S., Sisodiya S.M., Cossette P., Cotsapas C., De Jonghe P., Dixon-Salazar T., Guerrini R., Kwan P., Marson A.G., Stewart R., Depondt C., Dlugos D.J., Scheffer I.E., Striano P., Freyer C., McKenna K., Regan B.M., Bellows S.T., Leu C., Bennett C.A., Johns E.M.C., Macdonald A., Shilling H., Burgess R., Weckhuysen D., Bahlo M., O'Brien T.J., Todaro M., Stamberger H., Andrade D.M., Sadoway T.R., Mo K., Krestel H., Gallati S., Papacostas S.S., Kousiappa I., Tanteles G.A., Sterbova K., Vlckova M., Sedlackova L., Lassuthova P., Klein K.M., Rosenow F., Reif P.S., Knake S., Kunz W.S., Zsurka G., Elger C.E., Bauer J., Rademacher M., Pendziwiat M., Muhle H., Rademacher A., van Baalen A., von Spiczak S., Stephani U., Afawi Z., Korczyn A.D., Kanaan M., Canavati C., Kurlemann G., Muller-Schluter K., Kluger G., Hausler M., Blatt I., Lemke J.R., Krey I., Weber Y.G., Wolking S., Becker F., Hengsbach C., Rau S., Maisch A.F., Steinhoff B.J., Schulze-Bonhage A., Schubert-Bast S., Schreiber H., Borggrafe I., Schankin C.J., Mayer T., Korinthenberg R., Brockmann K., Dennig D., Madeleyn R., Kalviainen R., Auvinen P., Saarela A., Linnankivi T., Lehesjoki A.-E., Rees M.I., Chung S.-K., Pickrell W.O., Powell R., Schneider N., Balestrini S., Zagaglia S., Braatz V., Johnson M.R., Auce P., Sills G.J., Baum L.W., Sham P.C., Cherny S.S., Lui C.H.T., Barisic N., Delanty N., Doherty C.P., Shukralla A., McCormack M., El-Naggar H., Canafoglia L., Franceschetti S., Castellotti B., Granata T., Zara F., Iacomino M., Madia F., Vari M.S., Mancardi M.M., Salpietro V., Bisulli F., Tinuper P., Licchetta L., Pippucci T., Stipa C., Minardi R., Gambardella A., Labate A., Annesi G., Manna L., Gagliardi M., Parrini E., Mei D., Vetro A., Bianchini C., Montomoli M., Doccini V., Marini C., Suzuki T., Inoue Y., Yamakawa K., Tumiene B., Sadleir L.G., King C., Mountier E., Caglayan S.H., Arslan M., Yapici Z., Yis U., Topaloglu P., Kara B., Turkdogan D., Gundogdu-Eken A., Bebek N., Ugur-Iseri S., Baykan B., Salman B., Haryanyan G., Yucesan E., Kesim Y., Ozkara C., Poduri A., Shiedley B.R., Shain C., Buono R.J., Ferraro T.N., Sperling M.R., Lo W., Privitera M., French J.A., Schachter S., Kuzniecky R.I., Devinsky O., Hegde M., Khankhanian P., Helbig K.L., Ellis C.A., Spalletta G., Piras F., Gili T., Ciullo V., Reif A., McQuillin A., Bass N., McIntosh A., Blackwood D., Johnstone M., Palotie A., Pato M.T., Pato C.N., Bromet E.J., Carvalho C.B., Achtyes E.D., Azevedo M.H., Kotov R., Lehrer D.S., Malaspina D., Marder S.R., Medeiros H., Morley C.P., Perkins D.O., Sobell J.L., Buckley P.F., Macciardi F., Rapaport M.H., Knowles J.A., Fanous A.H., McCarroll S.A., Gupta N., Gabriel S.B., Daly M.J., Lander E.S., Lowenstein D.H., Goldstein D.B., Lerche H., Berkovic S.F., Neale B.M., Epi25 Collaborative, YÜCESAN, EMRAH, Institute for Molecular Medicine Finland, Children's Hospital, HUS Children and Adolescents, Department of Medical and Clinical Genetics, University Management, Centre of Excellence in Complex Disease Genetics, Aarno Palotie / Principal Investigator, and Genomics of Neurological and Neuropsychiatric Disorders
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s.berkovic@unimelb.edu.au [Epi25 Collaborative. Electronic address] ,0301 basic medicine ,GAMMA-2-SUBUNIT ,burden analysi ,DNA Mutational Analysis ,PROTEIN ,Neurodegenerative ,VARIANTS ,SUSCEPTIBILITY ,Medical and Health Sciences ,Epilepsy ,0302 clinical medicine ,2.1 Biological and endogenous factors ,EPIDEMIOLOGY ,Missense mutation ,Exome ,Aetiology ,Genetics (clinical) ,Exome sequencing ,11 Medical and Health Sciences ,seizures ,GABRG2 ,Genetics ,Genetics & Heredity ,0303 health sciences ,biology ,COMMON EPILEPSIES ,1184 Genetics, developmental biology, physiology ,sequencing ,Biological Sciences ,Epi25 Collaborative ,Phenotype ,GENOME ,epileptic encephalopathy ,burden analysis ,Neurological ,Biotechnology ,Genetic Markers ,seizure ,EEF1A2 ,Burden analysis ,epilepsy ,exome ,Article ,03 medical and health sciences ,Clinical Research ,Exome Sequencing ,Genetic variation ,medicine ,Humans ,Genetic Predisposition to Disease ,Gene ,EPILEPTIC SEIZURES ,METAANALYSIS ,030304 developmental biology ,Human Genome ,Neurosciences ,Genetic Variation ,06 Biological Sciences ,medicine.disease ,Brain Disorders ,030104 developmental biology ,Genetic marker ,DE-NOVO MUTATIONS ,Case-Control Studies ,biology.protein ,3111 Biomedicine ,Human medicine ,030217 neurology & neurosurgery - Abstract
Sequencing-based studies have identified novel risk genes for rare, severe epilepsies and revealed a role of rare deleterious variation in common epilepsies. To identify the shared and distinct ultra-rare genetic risk factors for rare and common epilepsies, we performed a whole-exome sequencing (WES) analysis of 9,170 epilepsy-affected individuals and 8,364 controls of European ancestry. We focused on three phenotypic groups; the rare but severe developmental and epileptic encephalopathies (DEE), and the commoner phenotypes of genetic generalized epilepsy (GGE) and non-acquired focal epilepsy (NAFE). We observed that compared to controls, individuals with any type of epilepsy carried an excess of ultra-rare, deleterious variants in constrained genes and in genes previously associated with epilepsy, with the strongest enrichment seen in DEE and the least in NAFE. Moreover, we found that inhibitory GABAA receptor genes were enriched for missense variants across all three classes of epilepsy, while no enrichment was seen in excitatory receptor genes. The larger gene groups for the GABAergic pathway or cation channels also showed a significant mutational burden in DEE and GGE. Although no single gene surpassed exome-wide significance among individuals with GGE or NAFE, highly constrained genes and genes encoding ion channels were among the top associations, including CACNA1G, EEF1A2, and GABRG2 for GGE and LGI1, TRIM3, and GABRG2 for NAFE. Our study confirms a convergence in the genetics of common and rare epilepsies associated with ultra-rare coding variation and highlights a ubiquitous role for GABAergic inhibition in epilepsy etiology in the largest epilepsy WES study to date.
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- 2019
10. Parental Mosaicism in 'De Novo' Epileptic Encephalopathies
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Georgina Hollingsworth, Lynette G. Sadleir, Chontelle King, Gemma L. Carvill, Amy L Schneider, Samuel F. Berkovic, Ingrid E. Scheffer, Candace T. Myers, Amy Lacroix, Heather C Mefford, Michele G. Mehaffey, Zoe Thuesmunn, Allison Knupp, and Alison M. Muir
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0301 basic medicine ,Male ,Parents ,Epilepsy ,business.industry ,Mosaicism ,Epileptic encephalopathy ,General Medicine ,Bioinformatics ,medicine.disease ,Article ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Seizures ,Mutation (genetic algorithm) ,Mutation ,medicine ,Humans ,Female ,business ,030217 neurology & neurosurgery - Abstract
Risk of Recurrence of Epileptic Encephalopathies In 10 of 120 family trios (consisting of a child with de novo epileptic encephalopathy and the child’s biologic parents), one parent was found to have mosaicism for the etiologic variant. This finding has implications for determining the risk of recurrence.
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- 2018
11. Structural basis of autoregulatory scaffolding by apoptosis signal-regulating kinase 1
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Johannes F. Weijman, Chontelle King, Elizabeth C. Ledgerwood, Abhishek Kumar, Sam A. Jamieson, James M. Murphy, Peter D. Mace, and Tom T. Caradoc-Davies
- Subjects
Models, Molecular ,0301 basic medicine ,Protein Conformation ,MAP Kinase Kinase 6 ,MAP Kinase Kinase Kinase 5 ,Models, Biological ,Substrate Specificity ,MAP2K7 ,Structure-Activity Relationship ,03 medical and health sciences ,Humans ,Protein Interaction Domains and Motifs ,ASK1 ,Amino Acid Sequence ,Phosphorylation ,MAPK14 ,Binding Sites ,Multidisciplinary ,030102 biochemistry & molecular biology ,biology ,Cell biology ,Pleckstrin homology domain ,Tetratricopeptide ,030104 developmental biology ,PNAS Plus ,Protein kinase domain ,Mitogen-activated protein kinase ,Mutation ,biology.protein ,Signal transduction ,Protein Binding ,Signal Transduction - Abstract
Apoptosis signal-regulating kinases (ASK1-3) are apical kinases of the p38 and JNK MAP kinase pathways. They are activated by diverse stress stimuli, including reactive oxygen species, cytokines, and osmotic stress; however, a molecular understanding of how ASK proteins are controlled remains obscure. Here, we report a biochemical analysis of the ASK1 kinase domain in conjunction with its N-terminal thioredoxin-binding domain, along with a central regulatory region that links the two. We show that in solution the central regulatory region mediates a compact arrangement of the kinase and thioredoxin-binding domains and the central regulatory region actively primes MKK6, a key ASK1 substrate, for phosphorylation. The crystal structure of the central regulatory region reveals an unusually compact tetratricopeptide repeat (TPR) region capped by a cryptic pleckstrin homology domain. Biochemical assays show that both a conserved surface on the pleckstrin homology domain and an intact TPR region are required for ASK1 activity. We propose a model in which the central regulatory region promotes ASK1 activity via its pleckstrin homology domain but also facilitates ASK1 autoinhibition by bringing the thioredoxin-binding and kinase domains into close proximity. Such an architecture provides a mechanism for control of ASK-type kinases by diverse activators and inhibitors and demonstrates an unexpected level of autoregulatory scaffolding in mammalian stress-activated MAP kinase signaling.
- Published
- 2017
12. Double somatic mosaicism in a child with Dravet syndrome
- Author
-
Ingrid E. Scheffer, Lynette G. Sadleir, Amy L Schneider, Heather C Mefford, Chontelle King, Aman S Buttar, and Alison M. Muir
- Subjects
0301 basic medicine ,Scn1a mutation ,03 medical and health sciences ,0302 clinical medicine ,Dravet syndrome ,Genetic etiology ,medicine ,Clinical/Scientific Notes ,Allele frequency ,Genetics (clinical) ,Genetics ,business.industry ,Epileptic encephalopathy ,medicine.disease ,3. Good health ,Clinical neurology ,030104 developmental biology ,Somatic mosaicism ,Neurology (clinical) ,business ,030217 neurology & neurosurgery - Abstract
Dravet syndrome, the prototypic infantile-onset developmental and epileptic encephalopathy, occurs secondary to de novo pathogenic variants in SCN1A in over 80% of cases1 . One possible genetic etiology for patients without a heterozygous SCN1A mutation is a post-zygotic mosaic SCN1A variant below the level detected by diagnostic sequencing, which routinely identifies only variants with allele frequencies above ∼20%. We used targeted deep resequencing to systematically investigate whether mosaicism could be the cause in individuals with molecularly unsolved Dravet syndrome.
- Published
- 2019
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