A number of other genes have been identified from T2DM studies and include WFS1 (odds ratio, 1.04), FTO (odds ratio, 1.11), TCF7L2 (odds ratio, 1.00) and KCNJ11 (odds ratio, 1.14) (Franceschini et al., 2012; Yang et al., 2012). Here, WFS1 is linked to type 2 diabetes mellitus.