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Neurology Genetics
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February 2017; 3 (1) ArticleOpen Access

Clinical and genetic study of hereditary spastic paraplegia in Canada

Nicolas Chrestian, Nicolas Dupré, Ziv Gan-Or, Anna Szuto, Shiyi Chen, Anil Venkitachalam, Jean-Denis Brisson, Jodi Warman-Chardon, Sohnee Ahmed, Setareh Ashtiani, Heather MacDonald, Noreen Mohsin, Karim Mourabit-Amari, Pierre Provencher, Kym M. Boycott, Dimitri J. Stavropoulos, Patrick A. Dion, Peter N. Ray, Oksana Suchowersky, Guy A. Rouleau, Grace Yoon
First published December 5, 2016, DOI: https://doi.org/10.1212/NXG.0000000000000122
Nicolas Chrestian
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Nicolas Dupré
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Ziv Gan-Or
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Anna Szuto
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Shiyi Chen
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Anil Venkitachalam
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Jean-Denis Brisson
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Jodi Warman-Chardon
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Sohnee Ahmed
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Setareh Ashtiani
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Heather MacDonald
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Noreen Mohsin
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Karim Mourabit-Amari
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Pierre Provencher
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Kym M. Boycott
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Dimitri J. Stavropoulos
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Patrick A. Dion
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Peter N. Ray
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Oksana Suchowersky
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Guy A. Rouleau
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Grace Yoon
From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
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Full PDF
Citation
Clinical and genetic study of hereditary spastic paraplegia in Canada
Nicolas Chrestian, Nicolas Dupré, Ziv Gan-Or, Anna Szuto, Shiyi Chen, Anil Venkitachalam, Jean-Denis Brisson, Jodi Warman-Chardon, Sohnee Ahmed, Setareh Ashtiani, Heather MacDonald, Noreen Mohsin, Karim Mourabit-Amari, Pierre Provencher, Kym M. Boycott, Dimitri J. Stavropoulos, Patrick A. Dion, Peter N. Ray, Oksana Suchowersky, Guy A. Rouleau, Grace Yoon
Neurol Genet Feb 2017, 3 (1) e122; DOI: 10.1212/NXG.0000000000000122

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Article Information

vol. 3 no. 1 e122
DOI: 
https://doi.org/10.1212/NXG.0000000000000122

Published By: 
Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology
Online ISSN: 
2376-7839
History: 
  • Received June 30, 2016
  • Accepted in final form October 20, 2016
  • First Published December 5, 2016.

Copyright & Usage: 
Copyright © 2016 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND), which permits downloading and sharing the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

Author Disclosures

    1. Nicolas Chrestian, MD,
    2. Nicolas Dupré, MD,
    3. Ziv Gan-Or, MD, PhD,
    4. Anna Szuto, MSc,
    5. Shiyi Chen, MSc,
    6. Anil Venkitachalam, MD,
    7. Jean-Denis Brisson, MD,
    8. Jodi Warman-Chardon, MD,
    9. Sohnee Ahmed, MSc,
    10. Setareh Ashtiani, MSc,
    11. Heather MacDonald, MSc,
    12. Noreen Mohsin, BSc,
    13. Karim Mourabit-Amari, MD,
    14. Pierre Provencher, MSc,
    15. Kym M. Boycott, MD, PhD,
    16. Dimitri J. Stavropoulos, PhD,
    17. Patrick A. Dion, PhD,
    18. Peter N. Ray, PhD,
    19. Oksana Suchowersky, MD,
    20. Guy A. Rouleau, MD, PhD and
    21. Grace Yoon, MD
  1. Nicolas Chrestian, MD,
  2. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  3. Nicolas Dupré, MD,
  4. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. Actelion Pharmaceuticals

    Editorial Boards:
    1. Cerebellum & Ataxia

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  5. Ziv Gan-Or, MD, PhD,
  6. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for travel or speaker honoraria:
    1. Sanofy/genzyme, travel fees and speaker honoraria

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. (1) Canadian Institute of Health Research, Post-doctoral fellowship, post-doctoral fellow, 2014-2016

    Research Support, Academic Entities:
    1. (1) McGill University

    Research Support, Foundations and Societies:
    1. (1) Michael J. Fox Foundation

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  7. Anna Szuto, MSc,
  8. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  9. Shiyi Chen, MSc,
  10. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  11. Anil Venkitachalam, MD,
  12. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  13. Jean-Denis Brisson, MD,
  14. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  15. Jodi Warman-Chardon, MD,
  16. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  17. Sohnee Ahmed, MSc,
  18. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. I am currently employed by GeneDx from January 2016 as a laboratory genetic counselor. This commercial entity is not related to this manuscript at all, as I did not join this company until well after the data and manuscript were compiled/written.

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  19. Setareh Ashtiani, MSc,
  20. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  21. Heather MacDonald, MSc,
  22. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. CIHR Emerging Team Grant, in collaboration with the Canadian Organization for Rare Disorders (CORD), grant number RN127580-260005, research genetic counselor, 1 year

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  23. Noreen Mohsin, BSc,
  24. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  25. Karim Mourabit-Amari, MD,
  26. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  27. Pierre Provencher, MSc,
  28. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  29. Kym M. Boycott, MD, PhD,
  30. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. (1)Human Molecular Genetics, Editorial Advisory Board Member, 2015-present. (2) Genetics, Editorial Advisory Board Member, 2015- present. (3) Molecular Genetics and Genomic Medicine; Editorial Advisory Board Member, 2014-present.

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  31. Dimitri J. Stavropoulos, PhD,
  32. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  33. Patrick A. Dion, PhD,
  34. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  35. Peter N. Ray, PhD,
  36. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  37. Oksana Suchowersky, MD,
  38. Scientific Advisory Boards:
    1. Abbvie,

    Gifts:
    1. NONE

    Funding for travel or speaker honoraria:
    1. American Academy of Neurology - speaker and course director, annual meetings, 2015, 2016

    Editorial Boards:
    1. Editorial Board - Canadian Journal of Neurological Sciences 2005-2016, Nature Reviews Neurology 2010-ongoing

    Patents:
    1. NONE

    Publishing Royalties:
    1. UpToDate - chapters on Diagnosis of Huntington Disease, Treatment of Huntington Disease, and Diagnosis of Chorea, yearly ongoing updates on these 3 chapters

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. Advisory Boards for Abbott(Abbvie), and Ipsen

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. Abbvie - CADENCE and OBSERVE studies 2015-2016 Biotie - TOZ-Cl05 2016-ongoing

    Research Support, Government Entities:
    1. Steady -PD , NIH funded (multi-center)Local PI, 2014- ongoing Dystonia Coalition, NIH funded (multicenter), Local PI, 2013-2016 Hereditary Spastic Paraplegia, CIHR funded (multicenter), Co-investigator of clinical arm, 2012-ongoing

    Research Support, Academic Entities:
    1. Funded Chair, Toupin Foundation, University of Alberta

    Research Support, Foundations and Societies:
    1. Enroll-HD, funded by CHDI, Local PI, 2010-ongoing

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  39. Guy A. Rouleau, MD, PhD and
  40. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. (1) CIHR Foundation Scheme (FDN-143260); 07/2015 to 06/2022; 708,381$/year. Genetic & Biological Studies of Brain Disorders. Role: Principal Applicant (2) ALS Society of Canada, 09/2013 to 08/2015. Assessment of somatic mutations and repeat instability in known ALS genes. Role: Principal Applicant. (3) ALS Association (OJ3X54), 08/2012 to 07/2015. Characterization of C9ORF72 expansion stability in ALS/FTD patients. Role: Principal Applicant.

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  41. Grace Yoon, MD
  42. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. This study was funded by CIHR Emerging Team Grant, in collaboration with the Canadian Organization for Rare Disorders (CORD), grant number RN127580 ? 260005, 2012-2017. The funding organization had no role in design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  1. From the Division of Neurology (N.C., G.Y.), Division of Clinical and Metabolic Genetics (S. Ahmed, H.M., G.Y.), Department of Paediatrics, University of Toronto, The Hospital for Sick Children; Faculty of Medicine (N.C., N.D., J.-D.B., K.M.-A.), Laval University, Quebec City; Department of Neurological Sciences (N.D., P.P.), CHU de Québec; Department of Neurology and Neurosurgery (Z.G.-O., N.M., P.A.D., G.A.R.), McGill University, Montreal Neurological Institute, Quebec; Department of Medical Genetics (A.S.), University of Montreal, CHUM, Quebec; The Hospital for Sick Children Research Institute (S.C.), Child Health Evaluative Sciences/Biostatistics Design & Analysis Unit, Toronto, Ontario; Department of Medicine (A.V., O.S.), Division of Neurology, Department of Medical Genetics (S. Ashtiani, O.S.), University of Alberta, Edmonton; Department of Genetics (J.W.-C., K.M.B.), Children's Hospital of Eastern Ontario, Ottawa; CHU de Québec (K.M.-A.), Hôpital Enfant-Jésus, Quebec City; Department of Paediatric Laboratory Medicine (D.J.S., P.N.R.), The Hospital for Sick Children, Toronto, Ontario; and Department of Molecular Genetics (P.N.R.), The University of Toronto, Canada.
  1. Correspondence to Dr. Yoon: grace.yoon{at}utoronto.ca
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