MAPT and Lewy body dementia: Low levels of Aβ1‐42 (OR, 0.42; 95% CI, 0.22‐0.80), high levels of tau (OR, 3.62, 95% CI, 1.58‐8.27), low levels of total α‐syn (OR, 0.30; 95%CI: 0.13‐0.74), and high levels of o‐α‐syn (OR, 4.55; 95% CI, 1.78‐11.66) give a higher risk for DLB compared with controls.