TARDBP and frontotemporal dementia: Although previous studies failed to identify a significant role for TARDBP mutations in FTD (Rollinson et al., 2007; Gallone et al., 2009; Gijselinck et al., 2009; Schumacher et al., 2009), recently it has been reported that TARDBP mutations might be causative of FTD with MDN.