RFGLS analyses of APOE ε4 risk status indicated that although risk was associated with reduced alpha power at both occipital-parietal and vertex sites, neither association was close to significant (both p-values greater than .45). VEGAS results for the remaining 15 genes (gene–EEG parameter associations) in our set of EEG-specific candidate genes are provided in Table 4. None survived correction for the number of tests (α = 3.12 × 10−3). Two associations were nominally significant (p < .05): between GABRA2 and beta power, and between CRH-BP and alpha power at Cz (although this was not observed for occipital-parietal alpha power). As in Derringer et al. (2011), we did not obtain a significant association between SGIP1 and theta power.
