Genome-wide association studies (GWAS) examined APOE4 to be a significant loci linked to DLB (Bras et al., 2014; Guerreiro et al., 2018; Rongve et al., 2019; Chia et al., 2021; Kaivola et al., 2021; Bousiges et al., 2023). Here, APOE is linked to Lewy body dementia.