However, considering that attention and visuospatial dysfunction, which are neuropsychological hallmarks of DLB39, was affected by PC1 only and that univariate models for cognitive scores using PC1 as a predictor had the lowest AIC values, PC1 could have more dominant effects on cognitive dysfunction than DAT biomarkers in DLB patients. This evidence concerns the gene SLC6A3 and Lewy body dementia.