Behavioral variant FTD (bvFTD) is the most common clinical subtype of FTD, and pathological subtypes of bvFTD are classified into FTD-tau, TAR DNA-binding protein 43 (TDP-43), and fused in sarcoma (FUS) [2,4,5,6]. This evidence concerns the gene TARDBP and behavioral variant of frontotemporal dementia.