The AD‐tau score did not correlate with MMSE in the AD group, but the distribution spread as the score increased; a significant correlation was observed when participants with an MMSE ≤ 29 were included in the HC group (t[59] = −8.89; rs = −0.76; P < 0.0001) (Fig. S3). The gene discussed is MAPT; the disease is Alzheimer disease.