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March 16, 2021; 96 (11) Article

RHOBTB2 Mutations Expand the Phenotypic Spectrum of Alternating Hemiplegia of Childhood

Sara Zagaglia, Dora Steel, S. Krithika, Laura Hernandez-Hernandez, Helena Martins Custodio, Kathleen M. Gorman, Aikaterini Vezyroglou, View ORCID ProfileRikke S. Møller, Mary D. King, Trine Bjørg Hammer, View ORCID ProfileRobert Spaull, Walid Fazeli, Tobias Bartolomaeus, Diane Doummar, Boris Keren, Cyril Mignot, Nathalie Bednarek, J. Helen Cross, Andrew A. Mallick, Alba Sanchis-Juan, Anna Basu, F. Lucy Raymond, Bryan J. Lynch, Anirban Majumdar, Hannah Stamberger, Sarah Weckhuysen, Sanjay M. Sisodiya, Manju A. Kurian
First published January 27, 2021, DOI: https://doi.org/10.1212/WNL.0000000000011543
Sara Zagaglia
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Dora Steel
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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S. Krithika
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Laura Hernandez-Hernandez
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Helena Martins Custodio
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Kathleen M. Gorman
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Aikaterini Vezyroglou
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Rikke S. Møller
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Mary D. King
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Trine Bjørg Hammer
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Robert Spaull
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Walid Fazeli
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Tobias Bartolomaeus
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Diane Doummar
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Boris Keren
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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Cyril Mignot
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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Nathalie Bednarek
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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J. Helen Cross
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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Andrew A. Mallick
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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Alba Sanchis-Juan
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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Anna Basu
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
PhD
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F. Lucy Raymond
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Bryan J. Lynch
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Anirban Majumdar
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Hannah Stamberger
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Sarah Weckhuysen
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Sanjay M. Sisodiya
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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Manju A. Kurian
From the UCL Queen Square Institute of Neurology (S.Z., S.K., L.H.-H., H.M.C., S.M.S.), London; Chalfont Centre for Epilepsy (S.Z., S.K., H.M.C., S.M.S.), Buckinghamshire; Department of Neurology (D.S., A.V., J.H.C., M.A.K.), Great Ormond Street Hospital; Clinical Neurosciences (A.V., J.H.C.), and Neurogenetics Group (D.S., M.A.K.), Developmental Neurosciences NIHR BRC UCL Great Ormond Street Institute of Child Health, London; School of Life Sciences (S.K.), Faculty of Science and Engineering, Anglia Ruskin University, Cambridge, UK; Department of Neurology and Clinical Neurophysiology (K.M.G., M.D.K., B.J.L.), Children’s Health Ireland at Temple Street, Dublin 1; School of Medicine and Medical Sciences (K.M.G., M.D.K.), University College Dublin, Dublin 4, Ireland; Danish Epilepsy Centre (R.S.M., T.B.H.), Dianalund; Department of Regional Health Research (R.S.M.), University of Southern Denmark, Odense; Department of Paediatric Neurology (R.S., A.A.M., A.M.), Bristol Royal Hospital for Children, UK; Pediatric Neurology (W.F.), Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne; Institute of Human Genetics (T.B.), University of Leipzig Medical Center, Germany; Departement de Neuropediatrie (D.D.), Centre de Référence Neurogénetique Mouvements Anormaux, Hôpital Armand Trousseau, and Department of Genetics (B.K., C.M.), La Pitié-Salpêtrière Hospital, APHP, Sorbonne University, Paris; Centre de Référence Déficiences Intellectuelles de Causes Rares (C.M.); Departement de Pediatrie (N.B.), American Memorial Hospital, CHU Reims; CReSTIC (N.B.), University of Reims Champagne-Ardennes, France; University of Bristol (A.A.M.); Department of Haematology (A.S.-J.) and Cambridge Institute for Medical Research (F.L.R.), University of Cambridge; NIHR BioResource (A.S.-J., F.L.R.), Cambridge University Hospitals NHS Foundation Trust; Paediatric Neurology (A.B.), Great North Childrens Hospital, Newcastle upon Tyne; Population Health Sciences Institute (A.B.), Newcastle University, UK; Applied & Translational Genomics Group (H.S., S.W.), VIB-Center for Molecular Neurology, University of Antwerp; and Department of Neurology (H.S., S.W.), University Hospital Antwerp, Belgium.
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RHOBTB2 Mutations Expand the Phenotypic Spectrum of Alternating Hemiplegia of Childhood
Sara Zagaglia, Dora Steel, S. Krithika, Laura Hernandez-Hernandez, Helena Martins Custodio, Kathleen M. Gorman, Aikaterini Vezyroglou, Rikke S. Møller, Mary D. King, Trine Bjørg Hammer, Robert Spaull, Walid Fazeli, Tobias Bartolomaeus, Diane Doummar, Boris Keren, Cyril Mignot, Nathalie Bednarek, J. Helen Cross, Andrew A. Mallick, Alba Sanchis-Juan, Anna Basu, F. Lucy Raymond, Bryan J. Lynch, Anirban Majumdar, Hannah Stamberger, Sarah Weckhuysen, Sanjay M. Sisodiya, Manju A. Kurian
Neurology Mar 2021, 96 (11) e1539-e1550; DOI: 10.1212/WNL.0000000000011543

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Abstract

Objective To explore the phenotypic spectrum of RHOBTB2-related disorders and specifically to determine whether patients fulfill criteria for alternating hemiplegia of childhood (AHC), we report the clinical features of 11 affected individuals.

Methods Individuals with RHOBTB2-related disorders were identified through a movement disorder clinic at a specialist pediatric center, with additional cases identified through collaboration with other centers internationally. Clinical data were acquired through retrospective case-note review.

Results Eleven affected patients were identified. All had heterozygous missense variants involving exon 9 of RHOBTB2, confirmed as de novo in 9 cases. All had a complex motor phenotype, including at least 2 different kinds of movement disorder, e.g., ataxia and dystonia. Many patients demonstrated several features fulfilling the criteria for AHC: 10 patients had a movement disorder including paroxysmal elements, and 8 experienced hemiplegic episodes. In contrast to classic AHC, commonly caused by mutations in ATP1A3, these events were reported later only in RHOBTB2 mutation–positive patients from 20 months of age. Seven patients had epilepsy, but of these, 4 patients achieved seizure freedom. All patients had intellectual disability, usually moderate to severe. Other features include episodes of marked skin color change and gastrointestinal symptoms, each in 4 patients.

Conclusion Although heterozygous RHOBTB2 mutations were originally described in early infantile epileptic encephalopathy type 64, our study confirms that they account for a more expansive clinical phenotype, including a complex polymorphic movement disorder with paroxysmal elements resembling AHC. RHOBTB2 testing should therefore be considered in patients with an AHC-like phenotype, particularly those negative for ATPA1A3 mutations.

Glossary

AHC=
alternating hemiplegia of childhood;
CAPOS=
cerebellar ataxia, arreflexia, pes cavus, optic atrophy, and sensorineural hearing loss;
RRD=
RHOBTB2-related disorders

Footnotes

  • Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • ↵* These authors contributed equally to this work.

  • Received May 5, 2020.
  • Accepted in final form December 9, 2020.
  • © 2021 American Academy of Neurology
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