About S4

Funded by the Michael J. Fox Foundation, the Systemic Synuclein Sampling Study (S4) is an observational clinical study to better understand the progression of Parkinson's Disease by identifying the best biofluids and tissues for measuring the protein alpha-synuclein outside of the brain as a potential biomarker in people with PD. The CTSDMC is both the clinical and statistical core for this project.