BACH2 and type 1 diabetes mellitus: Investigating the pattern of LD across the BACH2 locus revealed that the structure-disruptive SNP rs3757247 significantly correlated (r2 = 0.949) with the T1D risk SNP rs11755527, as well as in strong correlation (r2 = 0.565) with the IBD risk SNP rs1847472 (Figure 4).