Queen Square Brain Bank for Neurological Disorders receives support from the Reta Lila Weston Institute of Neurological Studies and the Medical Research Council (MRC). CB is supported by the Multiple System Atrophy Trust, the British Neuropathological Society, and an Alzheimer’s Research UK Research Fellowship. TL is supported by an Alzheimer’s Research UK Senior Fellowship. TTW is supported by the Reta Lila Weston Trust and the MRC (N013255/1). JLH is supported by the Multiple System Atrophy Trust; the Multiple System Atrophy Coalition; Fund Sophia, managed by the King Baudouin Foundation and Karin & Sten Mortstedt CBD Solutions. This research was supported by the National Institute for Health Research University College London Hospitals Biomedical Research Centre. The authors also acknowledge funding support from the NIH National Institute of Neurological Disorders and Stroke (R21-NS093222 to MJH), Tissue from The Brain and Body Donation Program at the Banner Sun Health Research Institute is supported by the National Institute of Neurological Disorders and Stroke (U24 NS072026 National Brain and Tissue Resource for Parkinsons Disease and Related Disorders), the National Institute on Aging (P30 AG19610 Arizona Alzheimers Disease Core Center), the Arizona Department of Health Services (contract 211002, Arizona Alzheimers Research Center), and the Arizona Biomedical Research Commission (contracts 4001, 0011, 05–901 and 1001 to the Arizona Parkinson’s Disease Consortium).