SNCA and Parkinson disease: In PD and DLB, α-synuclein pathologies are mainly observed in neurons in the form of Lewy bodies (LBs) and Lewy neurites (LNs) (Baba et al., 1998), while glial cytoplasmic inclusions (GCIs) are seen in oligodendrocytes in MSA (Wakabayashi et al., 1998).