For example, while at the specific cutoff point the percentage elevation for IgG antibody against aluminum citrate in controls was 10%, the same percentage for blood samples from patients with ASCA positivity, gliadin and tTG positivity, AD, and ANA positivity was, respectively, 41, 56, 53 and 16 (Figure 1B, Figure 2B, Figure 3B and Figure 4B). Here, BTG3 is linked to Alzheimer disease.