SNCA and Lewy body dementia: This SNP is close to and in linkage disequilibrium with rs7680557 (D′ = 0.9959, r2 = 0.9196), which is associated with dementia as identified in the most recent Lewy body disease case–control GWAS.11 The rs7668531 signal is no longer genome-wide significant when we condition on the top rs7680557 in our data set, which suggests that rs7668531 is not independent and most likely tags SNCA-AS1.