How has the discovery of a biomarker changed the trajectory of Parkinson’s research? Just over a year ago, there was a major breakthrough in Parkinson’s research – the discovery of a tool that could detect abnormal alpha-synuclein protein in the spinal fluid of people living with PD even before the onset of symptoms. In our latest “Parkinson’s Science POV” podcast episode, experts talk about the ways the biomarker discovery helps reveal connections with other brain diseases and holds the promise