Clinical and biomarker predictors of α-synuclein seeding in cognitive impairment and motor parkinsonism.
Dopamine transporter (DAT) imaging and α-synuclein seed amplification assay (SAA) are biomarkers for Lewy body disease (LBD). We aimed to identify clinical and biomarker factors associated with SAA positivity in patients with cognitive impairment and frequent motor parkinsonism. Dual-phase DAT positron emission tomogra...