Neurofilament light chain in FTD is elevated not only in cerebrospinal fluid, but also in serum

Frontotemporal dementia (FTD) is a devastating neurodegenerative disorder for which readily available biomarkers are needed to monitor disease progression and response to future therapies. Neurofilament light chain (NfL), a cytoskeletal protein, is elevated in the cerebrospinal fluid (CSF) of patients with FTD, correlating with disease severity.1 ,2 As CSF sampling is more invasive than venepuncture and requires higher subject compliance, we...