1. Department of Neurology University Hospital of Toulouse Toulouse France
2. Neurology Unit, Department of Translational Medicine University of Piemonte Orientale Novara Italy
3. French Reference Center for MSA, Centre d'Investigation Clinique de Toulouse CIC1436, Department of Neurosciences and Clinical Pharmacology, NS‐Park/FCRIN Network, NeuroToul COEN Center University Hospital of Toulouse, INSERM, University of Toulouse 3 Toulouse France
4. Neuropediatric Department Toulouse‐Purpan University Hospital Toulouse France
5. Department of Medical Genetics Toulouse University Hospital Toulouse France