This article, published in The Lancet – May 2023, utilized the PPMI cohort utilizing α-synuclein seed amplification assays (SAAs) to identify biomarkers. The study found there is potential for SAAs to be used to differentiate individuals diagnosed with Parkinson’s. The article is provided below. There is also further reading that we find useful in the responses at the bottom of page on The Lancet website – “Linked Articles”.