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1. SOX11 variants cause a neurodevelopmental disorder with infrequent ocular malformations and hypogonadotropic hypogonadism and with distinct DNA methylation profile

Author

Reem Al-Jawahiri, Aidin Foroutan, Jennifer Kerkhof, Haley McConkey, Michael Levy, Sadegheh Haghshenas, Kathleen Rooney, Jasmin Turner, Debbie Shears, Muriel Holder, Henrietta Lefroy, Bruce Castle, Linda M. Reis, Elena V. Semina, Katherine Lachlan, Kate Chandler, Thomas Wright, Jill Clayton-Smith, Franziska Phan Hug, Nelly Pitteloud, Lucia Bartoloni, Sabine Hoffjan, Soo-Mi Park, Ajay Thankamony, Melissa Lees, Emma Wakeling, Swati Naik, Britta Hanker, Katta M. Girisha, Emanuele Agolini, Zampino Giuseppe, Ziegler Alban, Marine Tessarech, Boris Keren, Alexandra Afenjar, Christiane Zweier, Andre Reis, Thomas Smol, Yoshinori Tsurusaki, Okamoto Nobuhiko, Futoshi Sekiguchi, Naomi Tsuchida, Naomichi Matsumoto, Ikuyo Kou, Yoshiro Yonezawa, Shiro Ikegawa, Bert Callewaert, Megan Freeth, Lotte Kleinendorst, Alan Donaldson, Marielle Alders, Anne De Paepe, Bekim Sadikovic, Alisdair McNeill, Deborah Nickerson, Michael Bamshad, Suzanne Leal, John C. Ambrose, Prabhu Arumugam, Roel Bevers, Marta Bleda, Freya Boardman-Pretty, Christopher R. Boustred, Helen Brittain, Mark J. Caulfield, Georgia C. Chan, Greg Elgar, Tom Fowler, Adam Giess, Angela Hamblin, Shirley Henderson, Tim J.P. Hubbard, Rob Jackson, Louise J. Jones, Dalia Kasperaviciute, Melis Kayikci, Athanasios Kousathanas, Lea Lahnstein, Sarah E.A. Leigh, Ivonne U.S. Leong, Javier F. Lopez, null FionaMaleady-Crowe, Meriel McEntagart, Federico Minneci, Loukas Moutsianas, Michael Mueller, Nirupa Murugaesu, Anna C. Need, Peter O’Donovan, Chris A. Odhams, Christine Patch, Mariana Buongermino Pereira, Daniel Perez-Gil, John Pullinger, null TahrimaRahim, Augusto Rendon, null TimRogers, Kevin Savage, Kushmita Sawant, Richard H. Scott, Afshan Siddiq, Alexander Sieghart, Samuel C. Smith, Alona Sosinsky, Alexander Stuckey, Mélanie Tanguy, Ana Lisa Taylor Tavares, Ellen R.A. Thomas, Simon R. Thompson, Arianna Tucci, Matthew J. Welland, Eleanor Williams, Katarzyna Witkowska, Suzanne M. Wood, Human Genetics, AGEM - Amsterdam Gastroenterology Endocrinology Metabolism, ARD - Amsterdam Reproduction and Development, and ACS - Pulmonary hypertension & thrombosis

Subjects
EXPRESSION, MUTATIONS, FEATURES, Hypogonadism, disorder, DNA Methylation, Genome sequencing, Methylation, Article, SOXC Transcription Factors, Klinefelter Syndrome, Phenotype, Neurodevelopmental disorder, Neurodevelopmental Disorders, Exome Sequencing, SOX11, Medicine and Health Sciences, Neurodevelopmental, Humans, Exome, Genetics (clinical)
Abstract

Purpose: This study aimed to undertake a multidisciplinary characterization of the phenotype associated with SOX11 variants. Methods: Individuals with protein altering variants in SOX11 were identified through exome and genome sequencing and international data sharing. Deep clinical phenotyping was undertaken by referring clinicians. Blood DNA methylation was assessed using Infinium MethylationEPIC array. The expression pattern of SOX11 in developing human brain was defined using RNAscope. Results: We reported 38 new patients with SOX11 variants. Idiopathic hypogonadotropic hypogonadism was confirmed as a feature of SOX11 syndrome. A distinctive pattern of blood DNA methylation was identified in SOX11 syndrome, separating SOX11 syndrome from other BAFopathies. Conclusion: SOX11 syndrome is a distinct clinical entity with characteristic clinical features and episignature differentiating it from BAFopathies. (C) 2022 The Authors. Published by Elsevier Inc. on behalf of American College of Medical Genetics and Genomics.

Published
2022

2. Whole genome sequencing for the diagnosis of neurological repeat expansion disorders in the UK: a retrospective diagnostic accuracy and prospective clinical validation study

Author

Kristina Ibañez, James Polke, R Tanner Hagelstrom, Egor Dolzhenko, Dorota Pasko, Ellen Rachel Amy Thomas, Louise C Daugherty, Dalia Kasperaviciute, Katherine R Smith, Zandra C Deans, Sue Hill, Tom Fowler, Richard H Scott, John Hardy, Patrick F Chinnery, Henry Houlden, Augusto Rendon, Mark J Caulfield, Michael A Eberle, Ryan J Taft, Arianna Tucci, Ellen M McDonagh, Antonio Rueda, Dimitris Polychronopoulos, Georgia Chan, Heather Angus-Leppan, Kailash P Bhatia, James E Davison, Richard Festenstein, Pietro Fratta, Paola Giunti, Robin Howard, Laxmi Venkata, Matilde Laurá, Meriel McEntagart, Lara Menzies, Huw Morris, Mary M Reilly, Robert Robinson, Elisabeth Rosser, Francesca Faravelli, Anette Schrag, Jonathan M Schott, Thomas T Warner, Nicholas W Wood, David Bourn, Kelly Eggleton, Robyn Labrum, Philip Twiss, Stephen Abbs, Liana Santos, Ghareesa Almheiri, Isabella Sheikh, Jana Vandrovcova, Christine Patch, Ana Lisa Taylor Tavares, Zerin Hyder, Anna Need, Helen Brittain, Emma Baple, Loukas Moutsianas, Viraj Deshpande, Denise L Perry, Subramanian S. Ajay, Aditi Chawla, Vani Rajan, Kathryn Oprych, Angela Douglas, Gill Wilson, Sian Ellard, I Karen Temple, Andrew Mumford, Dom McMullan, Kikkeri Naresh, Frances A Flinter, Jenny C Taylor, Lynn Greenhalgh, William Newman, Paul Brennan, John A Sayer, F Lucy Raymond, Lyn S Chitty, John C. Ambrose, Prabhu Arumugam, Marta Bleda, Freya Boardman-Pretty, Jeanne M. Boissiere, Christopher R. Boustred, Clare E.H. Craig, Anna de Burca, Andrew Devereau, Greg Elgar, Rebecca E. Foulger, Pedro Furió-Tarí, Joanne Hackett, Dina Halai, Angela Hamblin, Shirley Henderson, James Holman, Tim J.P. Hubbard, Rob Jackson, Louise J. Jones, Melis Kayikci, Lea Lahnstein, Kay Lawson, Sarah E.A. Leigh, Ivonne U.S. Leong, Javier F. Lopez, Fiona Maleady-Crowe, Joanne Mason, Michael Mueller, Nirupa Murugaesu, Chris A. Odhams, Daniel Perez-Gil, John Pullinger, Tahrima Rahim, Pablo Riesgo-Ferreiro, Tim Rogers, Mina Ryten, Kevin Savage, Kushmita Sawant, Afshan Siddiq, Alexander Sieghart, Damian Smedley, Alona Sosinsky, William Spooner, Helen E. Stevens, Alexander Stuckey, Razvan Sultana, Simon R. Thompson, Carolyn Tregidgo, Emma Walsh, Sarah A. Watters, Matthew J. Welland, Eleanor Williams, Katarzyna Witkowska, Suzanne M. Wood, and Magdalena Zarowiecki

Subjects
Fragile X Mental Retardation Protein, DNA Repeat Expansion, Whole Genome Sequencing, Whole Genome Sequencing/methods, Humans, Neurology (clinical), Prospective Studies, Child, Fragile X Mental Retardation Protein/genetics, State Medicine, United Kingdom, Retrospective Studies
Abstract

BACKGROUND: Repeat expansion disorders affect about 1 in 3000 individuals and are clinically heterogeneous diseases caused by expansions of short tandem DNA repeats. Genetic testing is often locus-specific, resulting in underdiagnosis of people who have atypical clinical presentations, especially in paediatric patients without a previous positive family history. Whole genome sequencing is increasingly used as a first-line test for other rare genetic disorders, and we aimed to assess its performance in the diagnosis of patients with neurological repeat expansion disorders.METHODS: We retrospectively assessed the diagnostic accuracy of whole genome sequencing to detect the most common repeat expansion loci associated with neurological outcomes (AR, ATN1, ATXN1, ATXN2, ATXN3, ATXN7, C9orf72, CACNA1A, DMPK, FMR1, FXN, HTT, and TBP) using samples obtained within the National Health Service in England from patients who were suspected of having neurological disorders; previous PCR test results were used as the reference standard. The clinical accuracy of whole genome sequencing to detect repeat expansions was prospectively examined in previously genetically tested and undiagnosed patients recruited in 2013-17 to the 100 000 Genomes Project in the UK, who were suspected of having a genetic neurological disorder (familial or early-onset forms of ataxia, neuropathy, spastic paraplegia, dementia, motor neuron disease, parkinsonian movement disorders, intellectual disability, or neuromuscular disorders). If a repeat expansion call was made using whole genome sequencing, PCR was used to confirm the result.FINDINGS: The diagnostic accuracy of whole genome sequencing to detect repeat expansions was evaluated against 793 PCR tests previously performed within the NHS from 404 patients. Whole genome sequencing correctly classified 215 of 221 expanded alleles and 1316 of 1321 non-expanded alleles, showing 97·3% sensitivity (95% CI 94·2-99·0) and 99·6% specificity (99·1-99·9) across the 13 disease-associated loci when compared with PCR test results. In samples from 11 631 patients in the 100 000 Genomes Project, whole genome sequencing identified 81 repeat expansions, which were also tested by PCR: 68 were confirmed as repeat expansions in the full pathogenic range, 11 were non-pathogenic intermediate expansions or premutations, and two were non-expanded repeats (16% false discovery rate).INTERPRETATION: In our study, whole genome sequencing for the detection of repeat expansions showed high sensitivity and specificity, and it led to identification of neurological repeat expansion disorders in previously undiagnosed patients. These findings support implementation of whole genome sequencing in clinical laboratories for diagnosis of patients who have a neurological presentation consistent with a repeat expansion disorder.FUNDING: Medical Research Council, Department of Health and Social Care, National Health Service England, National Institute for Health Research, and Illumina.

Published
2022
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3. Evaluating the performance of a clinical genome sequencing program for diagnosis of rare genetic disease, seen through the lens of craniosynostosis

Author

Zerin Hyder, Eduardo Calpena, Yang Pei, Rebecca S. Tooze, Helen Brittain, Stephen R.F. Twigg, Deirdre Cilliers, Jenny E.V. Morton, Emma McCann, Astrid Weber, Louise C. Wilson, Andrew G.L. Douglas, Ruth McGowan, Anna Need, Andrew Bond, Ana Lisa Taylor Tavares, Ellen R.A. Thomas, John C. Ambrose, Prabhu Arumugam, Roel Bevers, Marta Bleda, Christopher R. Boustred, Georgia C. Chan, Greg Elgar, Tom Fowler, Adam Giess, Angela Hamblin, Shirley Henderson, Tim J.P. Hubbard, Rob Jackson, Louise J. Jones, Dalia Kasperaviciute, Melis Kayikci, Athanasios Kousathanas, Lea Lahnstein, Sarah E.A. Leigh, Ivonne U.S. Leong, Javier F. Lopez, Fiona Maleady-Crowe, Meriel McEntagart, Federico Minneci, Loukas Moutsianas, Michael Mueller, Nirupa Murugaesu, Peter O’Donovan, Chris A. Odhams, Christine Patch, Mariana Buongermino Pereira, Daniel Perez-Gil, John Pullinger, Tahrima Rahim, Augusto Rendon, Tim Rogers, Kevin Savage, Kushmita Sawant, Afshan Siddiq, Alexander Sieghart, Samuel C. Smith, Alona Sosinsky, Alexander Stuckey, Mélanie Tanguy, Simon R. Thompson, Arianna Tucci, Matthew J. Welland, Eleanor Williams, Katarzyna Witkowska, Suzanne M. Wood, Susan L. Hill, Zandra C. Deans, Freya Boardman-Pretty, Mark Caulfield, Richard H. Scott, and Andrew O.M. Wilkie

Subjects
Proband, medicine.diagnostic_test, Base Sequence, business.industry, Chromosome Mapping, Genomics, Disease, Bioinformatics, medicine.disease, Genome, DNA sequencing, Article, Craniosynostosis, Craniosynostoses, Rare Diseases, medicine, Humans, Genetic Testing, Medical diagnosis, business, Genetics (clinical), Genetic testing
Abstract

PurposeGenome sequencing (GS) for diagnosis of rare genetic disease is being introduced into the clinic, but the complexity of the data poses challenges for developing pipelines with high diagnostic sensitivity. We evaluated the performance of the Genomics England 100,000 Genomes Project (100kGP) panel-based pipelines, using craniosynostosis as a test disease.MethodsGS data from 114 probands with craniosynostosis and their relatives (314 samples), negative on routine genetic testing, were scrutinized by a specialized research team, and diagnoses compared with those made by 100kGP.ResultsSixteen likely pathogenic/pathogenic variants were identified by 100kGP. Eighteen additional likely pathogenic/pathogenic variants were identified by the research team, indicating that for craniosynostosis, 100kGP panels had a diagnostic sensitivity of only 47%. Measures that could have augmented diagnoses were improved calling of existing panel genes (+18% sensitivity), review of updated panels (+12%), comprehensive analysis of de novo small variants (+29%), and copy-number/structural variants (+9%). Recent NHS England recommendations that partially incorporate these measures should achieve 85% overall sensitivity (+38%).ConclusionGS identified likely pathogenic/pathogenic variants in 29.8% of previously undiagnosed patients with craniosynostosis. This demonstrates the value of research analysis and the importance of continually improving algorithms to maximize the potential of clinical GS.

Published
2021
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4. Pathogenic huntingtin repeat expansions in patients with frontotemporal dementia and amyotrophic lateral sclerosis

Author

Ramita Dewan, Ruth Chia, Jinhui Ding, Richard A. Hickman, Thor D. Stein, Yevgeniya Abramzon, Sarah Ahmed, Marya S. Sabir, Makayla K. Portley, Arianna Tucci, Kristina Ibáñez, F.N.U. Shankaracharya, Pamela Keagle, Giacomina Rossi, Paola Caroppo, Fabrizio Tagliavini, Maria L. Waldo, Per M. Johansson, Christer F. Nilsson, James B. Rowe, Luisa Benussi, Giuliano Binetti, Roberta Ghidoni, Edwin Jabbari, Coralie Viollet, Jonathan D. Glass, Andrew B. Singleton, Vincenzo Silani, Owen A. Ross, Mina Ryten, Ali Torkamani, Toshiko Tanaka, Luigi Ferrucci, Susan M. Resnick, Stuart Pickering-Brown, Christopher B. Brady, Neil Kowal, John A. Hardy, Vivianna Van Deerlin, Jean Paul Vonsattel, Matthew B. Harms, Huw R. Morris, Raffaele Ferrari, John E. Landers, Adriano Chiò, J. Raphael Gibbs, Clifton L. Dalgard, Sonja W. Scholz, Bryan J. Traynor, Adelani Adeleye, Camille Alba, Dagmar Bacikova, Daniel N. Hupalo, Elisa McGrath Martinez, Harvey B. Pollard, Gauthaman Sukumar, Anthony R. Soltis, Meila Tuck, Xijun Zhang, Matthew D. Wilkerson, Bradley N. Smith, Nicola Ticozzi, Claudia Fallini, Athina Soragia Gkazi, Simon D. Topp, Jason Kost, Emma L. Scotter, Kevin P. Kenna, Jack W. Miller, Cinzia Tiloca, Caroline Vance, Eric W. Danielson, Claire Troakes, Claudia Colombrita, Safa Al-Sarraj, Elizabeth A. Lewis, Andrew King, Daniela Calini, Viviana Pensato, Barbara Castellotti, Jacqueline de Belleroche, Frank Baas, Anneloor L.M.A. ten Asbroek, Peter C. Sapp, Diane McKenna-Yasek, Russell L. McLaughlin, Meraida Polak, Seneshaw Asress, Jesús Esteban-Pérez, José Luis Muñoz-Blanco, Zorica Stevic, Sandra D’Alfonso, Letizia Mazzini, Giacomo P. Comi, Roberto Del Bo, Mauro Ceroni, Stella Gagliardi, Giorgia Querin, Cinzia Bertolin, Wouter van Rheenen, Frank P. Diekstra, Rosa Rademakers, Marka van Blitterswijk, Kevin B. Boylan, Giuseppe Lauria, Stefano Duga, Stefania Corti, Cristina Cereda, Lucia Corrado, Gianni Sorarù, Kelly L. Williams, Garth A. Nicholson, Ian P. Blair, Claire Leblond-Manry, Guy A. Rouleau, Orla Hardiman, Karen E. Morrison, Jan H. Veldink, Leonard H. van den Berg, Ammar Al-Chalabi, Hardev Pall, Pamela J. Shaw, Martin R. Turner, Kevin Talbot, Franco Taroni, Alberto García-Redondo, Zheyang Wu, Cinzia Gellera, Antonia Ratti, Robert H. Brown, Christopher E. Shaw, John C. Ambrose, Prabhu Arumugam, Emma L. Baple, Marta Bleda, Freya Boardman-Pretty, Jeanne M. Boissiere, Christopher R. Boustred, H. Brittain, Mark J. Caulfield, Georgia C. Chan, Clare E.H. Craig, Louise C. Daugherty, Anna de Burca, Andrew Devereau, Greg Elgar, Rebecca E. Foulger, Tom Fowler, Pedro Furió-Tarí, Joanne M. Hackett, Dina Halai, Angela Hamblin, Shirley Henderson, James E. Holman, Tim J.P. Hubbard, Rob Jackson, Louise J. Jones, Dalia Kasperaviciute, Melis Kayikci, Lea Lahnstein, Kay Lawson, Sarah E.A. Leigh, Ivonne U.S. Leong, Javier F. Lopez, Fiona Maleady-Crowe, Joanne Mason, Ellen M. McDonagh, Loukas Moutsianas, Michael Mueller, Nirupa Murugaesu, Anna C. Need, Chris A. Odhams, Christine Patch, Daniel Perez-Gil, Dimitris Polychronopoulos, John Pullinger, Tahrima Rahim, Augusto Rendon, Pablo Riesgo-Ferreiro, Tim Rogers, Kevin Savage, Kushmita Sawant, Richard H. Scott, Afshan Siddiq, Alexander Sieghart, Damian Smedley, Katherine R. Smith, Alona Sosinsky, William Spooner, Helen E. Stevens, Alexander Stuckey, Razvan Sultana, Ellen R.A. Thomas, Simon R. Thompson, Carolyn Tregidgo, Emma Walsh, Sarah A. Watters, Matthew J. Welland, Eleanor Williams, Katarzyna Witkowska, Suzanne M. Wood, Magdalena Zarowiecki, Sampath Arepalli, Pavan Auluck, Robert H. Baloh, Robert Bowser, Alexis Brice, James Broach, William Camu, John Cooper-Knock, Philippe Corcia, Carsten Drepper, Vivian E. Drory, Travis L. Dunckley, Faraz Faghri, Jennifer Farren, Eva Feldman, Mary Kay Floeter, Pietro Fratta, Glenn Gerhard, Summer B. Gibson, Stephen A. Goutman, Terry D. Heiman-Patterson, Dena G. Hernandez, Ben Hoover, Lilja Jansson, Freya Kamel, Janine Kirby, Neil W. Kowall, Hannu Laaksovirta, Francesco Landi, Isabelle Le Ber, Serge Lumbroso, Daniel JL. MacGowan, Nicholas J. Maragakis, Gabriele Mora, Kevin Mouzat, Liisa Myllykangas, Mike A. Nalls, Richard W. Orrell, Lyle W. Ostrow, Roger Pamphlett, Erik Pioro, Stefan M. Pulst, John M. Ravits, Alan E. Renton, Wim Robberecht, Ian Robey, Ekaterina Rogaeva, Jeffrey D. Rothstein, Michael Sendtner, Katie C. Sidle, Zachary Simmons, David J. Stone, Pentti J. Tienari, John Q. Trojanowski, Juan C. Troncoso, Miko Valori, Philip Van Damme, Ludo Van Den Bosch, Lorne Zinman, Diego Albani, Barbara Borroni, Alessandro Padovani, Amalia Bruni, Jordi Clarimon, Oriol Dols-Icardo, Ignacio Illán-Gala, Alberto Lleó, Adrian Danek, Daniela Galimberti, Elio Scarpini, Maria Serpente, Caroline Graff, Huei-Hsin Chiang, Behzad Khoshnood, Linn Öijerstedt, Christopher M. Morris, Benedetta Nacmias, Sandro Sorbi, Jorgen E. Nielsen, Lynne E. Hjermind, Valeria Novelli, Annibale A. Puca, Pau Pastor, Ignacio Alvarez, Monica Diez-Fairen, Miquel Aguilar, Robert Perneczky, Janine Diehl-Schimd, Mina Rossi, Agustin Ruiz, Mercè Boada, Isabel Hernández, Sonia Moreno-Grau, Johannes C. Schlachetzki, Dag Aarsland, Marilyn S. Albert, Johannes Attems, Matthew J. Barrett, Thomas G. Beach, Lynn M. Bekris, David A. Bennett, Lilah M. Besser, Eileen H. Bigio, Sandra E. Black, Bradley F. Boeve, Ryan C. Bohannan, Francesca Brett, Maura Brunetti, Chad A. Caraway, Jose-Alberto Palma, Andrea Calvo, Antonio Canosa, Dennis Dickson, Charles Duyckaerts, Kelley Faber, Tanis Ferman, Margaret E. Flanagan, Gianluca Floris, Tatiana M. Foroud, Juan Fortea, Ziv Gan-Or, Steve Gentleman, Bernardino Ghetti, Jesse Raphael Gibbs, Alison Goate, David Goldstein, Isabel González-Aramburu, Neill R. Graff-Radford, Angela K. Hodges, Heng-Chen Hu, Daniel Hupalo, Jon Infante, Alex Iranzo, Scott M. Kaiser, Horacio Kaufmann, Julia Keith, Ronald C. Kim, Gregory Klein, Rejko Krüger, Walter Kukull, Amanda Kuzma, Carmen Lage, Suzanne Lesage, James B. Leverenz, Giancarlo Logroscino, Grisel Lopez, Seth Love, Qinwen Mao, Maria Jose Marti, Elisa Martinez-McGrath, Mario Masellis, Eliezer Masliah, Patrick May, Ian McKeith, Marek-Marsel Mesulam, Edwin S. Monuki, Kathy L. Newell, Lucy Norcliffe-Kaufmann, Laura Palmer, Matthew Perkins, Olga Pletnikova, Laura Molina-Porcel, Regina H. Reynolds, Eloy Rodríguez-Rodríguez, Jonathan D. Rohrer, Pascual Sanchez-Juan, Clemens R. Scherzer, Geidy E. Serrano, Vikram Shakkottai, Ellen Sidransky, Nahid Tayebi, Alan J. Thomas, Bension S. Tilley, Ronald L. Walton, Randy Woltjer, Zbigniew K. Wszolek, Georgia Xiromerisiou, Chiara Zecca, Hemali Phatnani, Justin Kwan, Dhruv Sareen, James R. Broach, Ximena Arcila-Londono, Edward B. Lee, Neil A. Shneider, Ernest Fraenkel, Noah Zaitlen, James D. Berry, Andrea Malaspina, Gregory A. Cox, Leslie M. Thompson, Steve Finkbeiner, Efthimios Dardiotis, Timothy M. Miller, Siddharthan Chandran, Suvankar Pal, Eran Hornstein, Daniel J. MacGowan, Terry Heiman-Patterson, Molly G. Hammell, Nikolaos.A. Patsopoulos, Oleg Butovsky, Joshua Dubnau, Avindra Nath, Matt Harms, Eleonora Aronica, Mary Poss, Jennifer Phillips-Cremins, John Crary, Nazem Atassi, Dale J. Lange, Darius J. Adams, Leonidas Stefanis, Marc Gotkine, Suma Babu, Towfique Raj, Sabrina Paganoni, Ophir Shalem, Colin Smith, Bin Zhang, Brent Harris, Iris Broce, Vivian Drory, John Ravits, Corey McMillan, Vilas Menon, Lani Wu, Steven Altschuler, Khaled Amar, Neil Archibald, Oliver Bandmann, Erica Capps, Alistair Church, Jan Coebergh, Alyssa Costantini, Peter Critchley, Boyd CP. Ghosh, Michele T.M. Hu, Christopher Kobylecki, P. Nigel Leigh, Carl Mann, Luke A. Massey, Uma Nath, Nicola Pavese, Dominic Paviour, Jagdish Sharma, Jenny Vaughan, HUS Neurocenter, Neurologian yksikkö, Department of Neurosciences, Clinicum, Pentti Tienari / Principal Investigator, Parkinson's UK, Human Genetics, ARD - Amsterdam Reproduction and Development, ANS - Complex Trait Genetics, Pathology, ANS - Cellular & Molecular Mechanisms, AII - Inflammatory diseases, Universidad de Cantabria, Rowe, James [0000-0001-7216-8679], and Apollo - University of Cambridge Repository

Subjects
0301 basic medicine, Huntington's Disease, Pathology, amyotrophic lateral sclerosis, Huntingtin, Neurology, 1702 Cognitive Sciences, International ALS/FTD Genomics Consortium, Neurodegenerative, frontotemporal dementia, 3124 Neurology and psychiatry, 0302 clinical medicine, Medicine, 2.1 Biological and endogenous factors, Psychology, Amyotrophic lateral sclerosis, Aetiology, Alzheimer's Disease Related Dementias (ADRD), NYGC ALS Consortium, Huntingtin Protein, DNA Repeat Expansion, General Neuroscience, Frontotemporal Dementia (FTD), International FTD Genetics Consortium, whole-genome sequencing, Frontotemporal Dementia, Neurological, Cognitive Sciences, Lewy body dementia, huntingtin, repeat expansions, Amyotrophic Lateral Sclerosis, Humans, Mutation, Whole Genome Sequencing, Frontotemporal dementia, Huntington’s disease, medicine.medical_specialty, congenital, hereditary, and neonatal diseases and abnormalities, FALS Sequencing Consortium, Article, 03 medical and health sciences, Atrophy, Rare Diseases, American Genome Center, Clinical Research, mental disorders, Genetics, Acquired Cognitive Impairment, Dementia, PROSPECT Consortium, Neurology & Neurosurgery, Lewy body, business.industry, International LBD Genomics Consortium, Neurosciences, 3112 Neurosciences, Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD), nutritional and metabolic diseases, medicine.disease, Brain Disorders, nervous system diseases, 030104 developmental biology, Genomics England Research Consortium, 1701 Psychology, ALS, business, 1109 Neurosciences, 030217 neurology & neurosurgery
Abstract

Hannu Laaksovirta konsortion jäsenenä. The Genomics England Research Consortium, The International ALS/FTD Genomics Consortium (iAFGC), The International FTD Genetics Consortium (IFGC), The International LBD Genomics Consortium (iLBDGC), The NYGC ALS Consortium, The PROSPECT Consortium,17 James B. Rowe,17 Luisa Benussi,18 Giuliano Binetti,18,19 Roberta Ghidoni,18 Edwin Jabbari,20,21 Coralie Viollet,22 Jonathan D. Glass,23 Andrew B. Singleton,24 Vincenzo Silani,25,26 Owen A. Ross,27 Mina Ryten,8,28,29 Ali Torkamani,30 Toshiko Tanaka,31 Luigi Ferrucci,31 Susan M. Resnick,32 We examined the role of repeat expansions in the pathogenesis of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) by analyzing whole-genome sequence data from 2,442 FTD/ALS patients, 2,599 Lewy body dementia (LBD) patients, and 3,158 neurologically healthy subjects. Pathogenic expansions (range, 40?64 CAG repeats) in the huntingtin (HTT) gene were found in three (0.12%) patients diagnosed with pure FTD/ALS syndromes but were not present in the LBD or healthy cohorts. We replicated our findings in an independent collection of 3,674 FTD/ALS patients. Postmortem evaluations of two patients revealed the classical TDP-43 pathology of FTD/ALS, as well as huntingtin-positive, ubiquitin-positive aggregates in the frontal cortex. The neostriatal atrophy that pathologically defines Huntington?s disease was absent in both cases. Our findings reveal an etiological relationship between HTT repeat expansions and FTD/ALS syndromes and indicate that genetic screening of FTD/ALS patients for HTT repeat expansions should be considered. We examined the role of repeat expansions in the pathogenesis of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) by analyzing whole-genome sequence data from 2,442 FTD/ALS patients, 2,599 Lewy body dementia (LBD) patients, and 3,158 neurologically healthy subjects. Pathogenic expansions (range, 40?64 CAG repeats) in the huntingtin (HTT) gene were found in three (0.12%) patients diagnosed with pure FTD/ALS syndromes but were not present in the LBD or healthy cohorts. We replicated our findings in an independent collection of 3,674 FTD/ALS patients. Postmortem evaluations of two patients revealed the classical TDP-43 pathology of FTD/ALS, as well as huntingtin-positive, ubiquitin-positive aggregates in the frontal cortex. The neostriatal atrophy that pathologically defines Huntington?s disease was absent in both cases. Our findings reveal an etiological relationship between HTT repeat expansions and FTD/ALS syndromes and indicate that genetic screening of FTD/ALS patients for HTT repeat expansions should be considered.

Published
2020
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