- Centre for Rare Diseases, Center for Health Economics Research Hannover (CHERH), - Institute of Clinical Epidemiology and Biometry, Center for Health Economics Research Hannover (CHERH), Centre of Mental Health, University Hospital - Department of Psychiatry, Psychosomatics and Psychotherapy, - Institute of Clinical Epidemiology and Biometry, - Centre for Rare Diseases, University of Hamburg - Department of Medical Psychology,, RWTH Aachen University Hospital - Center for Rare Diseases and Department of Digitalization and General Practice, Ruhr University of Bochum - Department of Psychosomatic Medicine and Psychotherapy, University of Regensburg - Centre for Rare Diseases Regensburg, Johannes Gutenberg University Mainz - Centre for Rare Disease and Department of Psychiatry and Psychotherapy, Ulm University - Department of Neurology, Goethe University Frankfurt - Frankfurt Reference Centre for Rare Diseases, University of Regensburg - Centre for Rare Diseases Regensburg, Goethe University Frankfurt - Frankfurt Reference Centre for Rare Diseases, University Hospital Magdeburg - Central German Competence Network for Rare Diseases, University Hospital of Tübingen - Centre for Rare Disease, University Hospital Ulm - Department of Psychosomatic Medicine and Psychotherapy, University Hospital Münster - Department of Psychosomatic Medicine Und Psychotherapy, Ruhr University of Bochum - University Hospital of Pediatrics and Adolescent Medicine, Allianz Chronischer Seltener Erkrankungen (ACHSE), University of Hamburg - Department of Medical Psychology,, Muenster University Hospital - Department of General Paediatrics, University Hospital Magdeburg - Central German Competence Network for Rare Diseases, RWTH Aachen University - Department of Neurology, Johannes Gutenberg University Mainz - Institute of Human Genetics, Hannover Medical School - Centre for Rare Diseases, University Hospital of Tübingen - Department of Psychosomatics and Psychotherapy and Hannover Medical School - Department of Psychosomatic Medicine and Psychotherapy

RWTH Aachen University - Department of Neurology, Forschungszentrum Jülich GmbH - ARA-BRAIN Institute Molecular Neuroscience and Neuroimaging, RWTH Aachen University - Department of Medical Statistics, UCL - Queen Square Institute of Neurology - Ataxia Centre, Fondazione IRCCS Istituto Neurologico ‘Carlo Besta’ - Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico ‘Carlo Besta’ - Unit of Medical Genetics and Neurogenetics, Hôpital de la Pitié-Salpêtrière - Sorbonne Université, Paris Brain Institute (ICM Institut du Cerveau), Hôpital de la Pitié-Salpêtrière - Sorbonne Université, Paris Brain Institute (ICM Institut du Cerveau), Medical University of Innsbruck - Department of Neurology, Medical University of Innsbruck - Department of Neurology, Ludwig Maximilian University of Munich (LMU) - The Friedrich-Baur-Institute, Ludwig Maximilian University of Munich (LMU) - The Friedrich-Baur-Institute, La Paz Institute for Health Research (IdiPAZ) - Reference Unit of Hereditary Ataxias and Paraplegias, University of Tübingen - Department of Neurology and Hertie-Institute for Clinical Brain Research, University of Tübingen - Department of Neurology and Hertie-Institute for Clinical Brain Research, University Hospital Bonn (UKB) - Department of Neurology, University Hospital Bonn (UKB) - Department of Neurology, RWTH Aachen University - Department of Neurology, Université Libre de Bruxelles (ULB) - Laboratory of Experimental Neurology, Université Libre de Bruxelles (ULB) - Laboratory of Experimental Neurology, RWTH Aachen University - Department of Neurology and Independent

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, RWTH Aachen University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, RWTH Aachen University - Electron Microscopy Facility, affiliation not provided to SSRN, affiliation not provided to SSRN, RWTH Aachen University - Department of Neurology, University of Oxford - Department of Oncology and affiliation not provided to SSRN