1. German Center for Neurodegenerative Diseases (DZNE) Bonn Germany
2. Department of Neurology University Hospital Bonn Bonn Germany
3. Houston Methodist Research Institute and Weil Cornell Medical College at Houston Methodist Houston Texas USA
4. McGill University Montreal Quebec Canada
5. Biogen Cambridge Massachusetts USA
6. Sorbonne Université, Paris Brain Institute, Paris Brain Institute – ICM, INSERM, CNRS, APHP University Hospital de la Pitié‐Salpêtrière Paris Paris France
7. Departments of Neurology and Human Genetics, David Geffen School of Medicine University of California Los Angeles Los Angeles California USA
8. Ataxia UK London United Kingdom
9. National Ataxia Foundation Minneapolis Minnesota USA
10. Hospital de Clinicas de Porto Alegre Porto Alegre Brazil
11. Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
12. Xiangya Hospital Central South University Changsha China
13. Brain Research Institute Niigata University Niigata Japan
14. Ataxia Unit, Department of Neurology Universidade Federal de São Paulo São Paulo Brazil
15. National Yang‐Ming Chiao Tung University Taipei Taiwan
16. Taipei Neurologic Institute Taipei Medical University Taipei Taiwan
17. University of Melbourne Parkville Victoria Australia
18. Institute of Medical Genetics and Applied Genomics University of Tübingen Tübingen Germany
19. Center for Rare Diseases University Hospital Tübingen Tübingen Germany
20. Division Translational Genomics of Neurodegenerative Diseases, Center for Neurology and Hertie‐Institute for Clinical Brain Research University of Tübingen Tübingen Germany
21. German Center for Neurodegenerative Diseases (DZNE) Tübingen Germany