From the Friedrich-Baur-Institute (J.S., B.S.-W., M.W.), Department of Neurology, LMU Munich, Germany; DNA Laboratory (P.L., P.S.), Department of Pediatric Neurology, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, Czech Republic; Neuromuscular Unit (D.K., A.K.), Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland; Dr. John T. Macdonald Foundation Department of Human Genetics (L.A., A.R., S.Z.), John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, FL; Neurogenetics Group (J.B., T.D., P.D.J.), Center for Molecular Neurology, University of Antwerp; Institute Born-Bunge (J.B., T.D., P.D.J.), University of Antwerp; Neuromuscular Reference Centre (J.B., P.D.J.), Department of Neurology, Antwerp University Hospital, Belgium; Department of Clinical Chemistry and Laboratory Medicine (C.B.), Jena University Hospital; Centogene AG (C.B.), Rostock, Germany; Department of Medical Genetics (G.J.B., H.H.), Telemark Hospital Trust, Skien, Norway; Neurology Department (D.B., A.L., J. Weishaupt), Ulm University, Germany; Department of Neurology (J.D., D. Walk), University of Minnesota, Minneapolis; Department of Neurology (L.D.), Perelman School of Medicine at the University of Pennsylvania, Philadelphia; Department of Sleep Medicine and Neuromuscular Diseases (B.D., A.S., P.Y.), University of Münster; Institute of Human Genetics (K.E., I.K.), Medical Faculty, RWTH Aachen University, Germany; Sydney Medical School (M.E., M.K., G.N.), Concord Hospital, Northcott Neuroscience Laboratory, ANZAC Research Institute, Concord, Australia; Department of Orthopaedics and Trauma Surgery (C.F., K.K., D. Weinmann, R.W., S.T., M.A.-G.), Medical University of Vienna, Austria; AP-HP (T.S.), Institut de Myologie, Centre de référence des maladies neuromusculaires Nord/Est/Ile-de-France, G-H Pitié-Salpêtrière, Paris, France; Department of Neurology (D.N.H.), University of Rochester, NY; Department of Clinical Neurosciences (R.H.), University of Cambridge School of Clinical Medicine, UK; Department of Neurology (S.I.), Konventhospital der Barmherzigen Brüder Linz; Karl Chiari Lab for Orthopaedic Biology (K.K., D. Weinmann, S.T.), Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Austria; Stanford Center for Undiagnosed Diseases (J.N.K.), Stanford, CA; Undiagnosed Diseases Network (UDN) (J.N.K., S.Z.); Centre for Medical Research (N.G.L., R.O., G.Ravenscroft), University of Western Australia, Nedlands; Harry Perkins Institute of Medical Research (N.G.L., R.O., G. Ravenscroft), Nedlands; Neurogenetic Unit (P.J.L.), Royal Perth Hospital, Perth, Australia; Department of Neurology (W.N.L., J. Wanschitz), Medical University of Innsbruck, Austria; Department of Neurosciences and Behavior (W.M.), Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; Department of Neurology (S.P.), Hannover Medical School, Germany; Department of Clinical and Experimental Medicine (G. Ricci), University of Pisa, Italy; Institute of Human Genetics (S.R.-S.), Medical University of Innsbruck, Austria; Department of Neurodegenerative Diseases Hertie-Institute for Clinical Brain Research and Center of Neurology (L.S., R.S., M.S.), University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (L.S., R.S., M.S.), Tübingen, Germany; AP-HP (B.F.), Laboratoire de génétique moléculaire, pharmacogénétique et hormonologie, Hôpital de Bicêtre; Le Kremlin-Bicêtre, France; Institute of Human Genetics (T.M.S.), Helmholtz Zentrum Munich-German Research Center for Environmental Health, Neuherberg; Institute for Human Genetics (T.M.S.), Technical University Munich; and Institut für Klinische Genetik (J. Wagner), Technische Universität Dresden, Medizinische Fakultät Carl Gustav Carus, Germany.