"Addition of the minor allele for rs670139 (MS4A4E) rs9331896 (CLU) and rs12155159 (NME8) was nominally associated with change on the DWRT DSST and WFT respectively in whites. For rs670139 and rs9331896 the association was only significant in individuals bearing at least one APOE 4 allele in stratified analyses."xsd:string