Circulating extracellular vesicle lipidomics identifies distinct signatures of amyotrophic lateral sclerosis and spinal muscular atrophy

Amyotrophic lateral sclerosis (ALS) is a heterogeneous neurodegenerative disorder lacking established biomarkers of underlying disease biology. Here, we identify lipidomic signatures of circulating extracellular vesicles (EVs) that distinguish ALS from neurologically healthy controls and related neu