MAPT and frontotemporal dementia: For example, CSF t‐tau and p‐tau can accurately discriminate FTD from controls (Meeter, Vijverberg, et al., 2018) but only have a moderate‐to‐weak correlation with neuropsychological performance (Bian et al., 2008; Borroni et al., 2011; Goossens et al., 2018).