CBS and Lewy body dementia: As for the distinction from HC, plasma p-tau181 showed the highest accuracy in discriminating AD from the other disease groups (FTD+PSP+CBS+DLB: cutoff > 1.98 pg/ml, sensitivity 86.6%, specificity 80.0%, AUC 0.889), in particular from FTD (AUC 0.964) and PSP (AUC 0.916), while its diagnostic value was lower for CBS (AUC 0.854) and DLB (AUC 0.806).