MAPT and Alzheimer disease: Similarly, the hNEX p-tau (S202) level was significantly higher in the Mild-AD group than the MCI and AMC groups (AMC, 3.63 ± 0.70; MCI, 5.85 ± 0.96; Mild-AD, 12.24 ± 2.69, p < 0.01 vs. AMC, p < 0.05 vs. MCI, Figure 2C).