1 From the Department of Neurology (S.B.), Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust; Department of Neuroradiology (R.S.), Walton Centre NHS Foundation Trust, Liverpool; North West Genomic Laboratory Hub (Liverpool) (A.S.), Manchester Centre for Genomic Medicine, Liverpool Women's Hospital; MRC Human Genetics Unit (Y.J.C.), Institute of Genetics and Cancer, University of Edinburgh, United Kingdom; Laboratory of Neurogenetics and Neuroinflammation (Y.J.C.), Imagine Institute, INSERM UMR1163, Paris, France; Department of Neurology (C.K.), Manchester Centre for Clinical Neurosciences, Northern Care Alliance NHS Foundation Trust, Salford; and Division of Neuroscience (C.K.), Manchester Academic Health Science Centre, University of Manchester, United Kingdom.