Notably, DLB and PDD share key similarities, as both are characterized as Lewy body diseases (LBD) due to the presence of Lewy body pathology, primarily composed of alpha-synuclein proteins (Donaghy and McKeith, 2014; Jellinger and Korczyn, 2018; Carceles-Cordon et al., 2023). This evidence concerns the gene SNCA and Lewy body dementia.