TCF7L2 and type 2 diabetes mellitus: For example, four SNPs (i.e., rs4506565 [28], rs10885409 [33], rs7901695 [34], and rs4132670 [35]) in TCF7L2 have been reported to be associated with T2D, and SNP rs11196205 in TCF7L2 is associated with both T2D and coronary artery disease [27], [36].