In vivo detection of pathologic α- synuclein and TDP-43 in the skin and olfactory mucosa of a patient with Parkinson’s disease-like phenotype carrying the p.Thr272Serfs*10 GRN mutation

We describe a patient carrying the GRN p.Thr272Serfs*10 mutation, who presented with parkinsonism at onset and later developed prodromal frontotemporal dementia, in whom seed amplification assay on olfactory mucosa and skin analyses suggest mixed TDP-43 and α-synuclein co-pathology, highlighting how combining these techniques could provide a comprehensive approach to investigate the underlying neuropathological process.