TCF7L2 and type 2 diabetes mellitus: Specifically, a different TCF7L2 SNP (rs7903146)—a SNP that is not in linkage disequilibrium (LD) with rs12772424 (r2 < 0.035, D’ <0.282) and which maps 122.2 kb distant from rs1277424—has been associated with risk for T2D in a series of studies [24–27].