NAV1 and Alzheimer disease: Compared to the control group, Nav1 and Egf gene expression levels were significantly elevated in the AD model mice (Figure 6A, Mock 0.13 ± 0.090 vs. MC903‐treated group 0.36 ± 0.17, p = 0.019, Figure 6B, Mock 0.0030 ± 0.0029 vs. MC903‐treated group 0.014 ± 0.012, p = 0.043).