In contrast, 76 out of 79 AD/Aβ42+ patients had positive Aβ42/Aβ40 (96.20% [95% C.I. = 91.99:100]), 69 had positive p-tau (87.34% [95% C.I. = 80.01:94.67]), and 66 had positive t-tau (83.54% [95% C.I. = 75.37:91.72]). Here, MAPT is linked to Alzheimer disease.