VPS26B and multiple system atrophy: Genetic screening on the whole VPS26a, VPS26b, and VPS29 genes have identified other VPS mutations which may produce pathogenic effects both in PD and atypical parkinsonisms, such as PSP (Progressive Supranuclear Palsy), MSA (Multiple system atrophy), and Lewy body dementia (LBD) (Koschmidder et al., 2014; Shannon et al., 2014; Gustavsson et al., 2015).