Blood-Based Biomarkers in Frontotemporal Dementia: A Narrative Review.

This narrative review explores the current landscape of blood biomarkers in Frontotemporal dementia (FTD). Neurofilament light chain (NfL) may be useful in the differentiation of behavioral variant FTD from primary psychiatric disorders (PPDs) or dementia with Lewy bodies (DLB). In prodromal FTD and presymptomatic mutation carriers (, , ), elevated NfL may herald pheno-conversion to full-blown dementia.