Further examination of the association between these three loci and oligodendrocyte expression of CR1 within the Banner SFG data revealed that this was driven by the association within AD subjects (Supplementary Dataset 4), indicating an AD-specific interaction for all three loci, but most strongly for rs679515 (AD diagnosis/dosage interaction p-value = 2.1e−5). Here, CR1 is linked to Alzheimer disease.