APOE and hippocampal atrophy: Hippocampal atrophy analysis revealed that relative to APOE ε4-ve/KIBRA T carriers (−0.016 cm3/year), the APOE ε4 + ve/KIBRA non-T carrier group (−0.067 cm3/year) had nominally significantly different rates of hippocampal atrophy however did not survive correction for multiple testing (p = 0.040, q = 0.107) over six years (Fig. 2, Table 3).