MAPT and tauopathy: Finally, we acknowledge that 18F‐AV‐1451 is not completely specific for tau, although post‐mortem studies have showed that it has high affinity for AD‐type tau lesions (Smith et al, 2016a), and not to other tau lesions (seen in other tauopathies) or other protein inclusions (Marquié et al, 2015).