MAPT and Alzheimer disease: Among these patients, 57% (n = 8) exhibited biomarker profiles consistent with AD, with M = 483.4 pg./mL, SD = 174.0 for Aβ42, M = 283.4 pg./mL, SD = 62.9 for total tau, and M = 29.9 pg./mL, SD = 11.9 for phosphorylated tau.