DLB A+ patients had significantly lower plasma Aβ42/40 ratio, and higher P-tau181 and P-tau231 levels than DLB A− patients (Aβ42/40: β = −0.008, 95% CI −0.016 to −0.0003, p = 0.01; P-tau181: β = 0.246, 95% CI 0.011–0.481, p < 0.05; P-tau231: β = 0.227, 95% CI 0.035–0.419, p < 0.05), but no significant difference could be observed for GFAP (β = 0.068, 95% CI −0.018 to 0.153, p = 0.119) and NfL (β = 0.004, 95% CI −0.087 to 0.096, p = 0.923) (Figure 3). Here, NEFL is linked to Lewy body dementia.