1 Department of Neurology (N.V., M.S., P.V.D.), Department of Ophthalmology (C.C.), and Laboratory Medicine (X.B., K.P.), University Hospital Leuven; Department of Microbiology and Immunology (X.B.), Experimental Laboratory Immunology, Leuven, Belgium; Department of Immunology (T.V.), St Eloi Hospital, Montpellier University, France; Department of Neurosciences (P.V.D.), Laboratory for Neurobiology; Vesalius Research Center (P.V.D.), Flemish Institute for Biotechnology (VIB); and Department of Neurosciences (B.G., K.P.), Laboratory for Molecular Neurobiomarker Research, Leuven, Belgium.