SV2A and Alzheimer disease: The correlation between SV2A and the 4G8 Aβ% area was not strong in the DG (P = 0.0122, r = − 0.3748), CA3/CA2 (P = 0.0384, r = − 0.3246), CA1 (P = 0.0307, r = − 0.3263) or the entorhinal cortex (P = 0.0051, r = − 0.4448) in the combined AD + NC cohort (Fig. 6a–d).