Figure 2. Mean changes of CSF Aβ42 over time in rs13333659 minor allele carriers vs. non-carriers. (A) Mean concentrations of CSF Aβ42 ± SE (standard error) change for rs13333659 minor allele carriers vs. non-carriers in total GWAS cohort during follow-up period. (B) Mean concentrations of CSF Aβ42 ± SE change for rs13333659 minor allele carriers vs. non-carriers in baseline amyloid-positive group during follow-up period.