Alterations in tau have also been described in DLB/PD (Lei et al., 2010; Duka et al., 2013), such as polymorphisms in MAPT (Witoelar et al., 2017; Li et al., 2018; Heckman et al., 2019) linked to increased risk for α-synucleinopathies. Here, MAPT is linked to Lewy body dementia.