1 Departments of Molecular Genetics (K.K.), Pathology (R.T.), and Neurology (R.T., M.N.), Brain Research Institute, and Center for Inter-organ Communication Research (A.Y.), Niigata University, Niigata City; Department of Neurology (T.T.), Kido Hospital, Niigata; and Department of Neurology (N.M., R.K.), Nishi-Niigata Chuo National Hospital; Niigata, Japan.