GFAP and hippocampal atrophy: In contrast, we did not find interaction in any biomarkers on hippocampal atrophy, although we observed that lower plasma Aβ42/Aβ40 (βstd = 0.117[95% ci, 0.015, 0.218], p = 0.024), higher plasma p-Tau181 concentrations (βstd = -0.190[95% ci, -0.306, -0.075], p = 0.001), and older ages (βstd = -0.274[95% ci, -0.371, -0.176], p < 0.001) but not plasma GFAP concentrations were related to more decreases in rHCV (Supplemental Fig. 9).