From the Department of Neurology (A.C., D.C., A.A.), IRCCS Humanitas Research Hospital and University, Rozzano, Milan; Department of Neuroscience (M.C.), University of Padua; Medical Genetics and Neurogenetics Unit (B.G.), IRCCS Carlo Besta Neurological Institute; and Department of Neurology (A.A.), Catholic University, Milan, Italy.