Figure 3. Kaplan-Meier plots for ARIA-E by bapineuzumab dose (a), number of APOE ε4 alleles (b), and presence of small hemosiderin deposits at baseline (c).
Increasing dose and number of APOE ε4 alleles were associated with an increased risk of ARIA-E over time. In the accompanying graphs, an increased risk of ARIA-E may be readily visualized by the decrease in the Kaplan-Meier survivor function after the first two doses, based on MRI readings performed 6 weeks after the baseline and month 3 infusions, in both subjects treated with the highest dose (2 mg/kg) and in APOE ε4 homozygotes. No increased risk was apparent for the presence small hemosiderin deposits at baseline.