Application of rare variant transmission disequilibrium tests to epileptic encephalopathy trio sequence data

Andrew S. Allen, Samuel F. Berkovic, Joshua Bridgers, Patrick Cossette, Dennis Dlugos, Michael P. Epstein, Tracy Glauser, David B. Goldstein, Erin L. Heinzen, Yu Jiang, Michael R. Johnson, Ruben Kuzniecky, Daniel H. Lowenstein, Anthony G. Marson, Heather C. Mefford, Terence J. O'Brien, Ruth Ottman, Steven Petrou, Slavé Petrovski, Annapurna PoduriZhong Ren, Ingrid E. Scheffer, Elliott Sherr, Quanli Wang, Rudi Balling, Nina Barisic, Stéphanie Baulac, Hande Caglayan, Dana Craiu, Peter De Jonghe, Christel Depienne, Renzo Guerrini, Ingo Helbig, Helle Hjalgrim, Dorota Hoffman-Zacharska, Johanna Jähn, Karl Martin Klein, Bobby Koeleman, Vladimir Komarek, Roland Krause, Eric Leguern, Anna Elina Lehesjoki, Johannes R. Lemke, Holger Lerche, Tarja Linnankivi, Carla Marini, Patrick May, Rikke S. Møller, Hiltrud Muhle, Deb Pal, Aarno Palotie, Felix Rosenow, Kaja Selmer, Jose M. Serratosa, Sanjay Sisodiya, Ulrich Stephani, Katalin Sterbova, Pasquale Striano, Arvid Suls, Tiina Talvik, Sarah Von Spiczak, Yvonne Weber, Sarah Weckhuysen, Federico Zara, Bassel Abou-Khalil, Brian K. Alldredge, Dina Amrom, Eva Andermann, Frederick Andermann, Jocelyn F. Bautista, Judith Bluvstein, Gregory D. Cascino, Damian Consalvo, Patricia Crumrine, Orrin Devinsky, Miguel E. Fiol, Nathan B. Fountain, Jacqueline French, Daniel Friedman, Kevin Haas, Sheryl R. Haut, Jean Hayward, Sucheta Joshi, Andres Kanner, Heidi E. Kirsch, Eric H. Kossoff, Rachel Kuperman, Shannon M. McGuire, Paul V. Motika, Edward J. Novotny, Juliann M. Paolicchi, Jack Parent, Kristen Park, Renée A. Shellhaas, Joseph Sirven, Michael C. Smith, Joseph Sullivan, Liu Lin Thio, Anu Venkat, Eileen P.G. Vining, Gretchen K. Von Allmen, Judith L. Weisenberg, Peter Widdess-Walsh, Melodie R. Winawer, Epi4K Consortium, EuroEPINOMICS-RES Consortium, Epilepsy Phenome Genome Project

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5 Citations (Scopus)

Abstract

The classic epileptic encephalopathies, including infantile spasms (IS) and Lennox-Gastaut syndrome (LGS), are severe seizure disorders that usually arise sporadically. De novo variants in genes mainly encoding ion channel and synaptic proteins have been found to account for over 15% of patients with IS or LGS. The contribution of autosomal recessive genetic variation, however, is less well understood. We implemented a rare variant transmission disequilibrium test (TDT) to search for autosomal recessive epileptic encephalopathy genes in a cohort of 320 outbred patient-parent trios that were generally prescreened for rare metabolic disorders. In the current sample, our rare variant transmission disequilibrium test did not identify individual genes with significantly distorted transmission over expectation after correcting for the multiple tests. While the rare variant transmission disequilibrium test did not find evidence of a role for individual autosomal recessive genes, our current sample is insufficiently powered to assess the overall role of autosomal recessive genotypes in an outbred epileptic encephalopathy population.

Original languageEnglish
Pages (from-to)894-899
Number of pages6
JournalEuropean Journal of Human Genetics
Volume25
Issue number7
DOIs
Publication statusPublished - 1 Jun 2017
Externally publishedYes

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