In addition, they found association for rs7903146 (TCF7L2) and rs7754840 (CDKAL1) just in early-onset T2D [OR = 1.39 (1.04–1.85), p = 0.024] and in nonobese T2D patients [OR = 1.25 (1.06–1.49), p = 0.009], respectively. Here, TCF7L2 is linked to type 2 diabetes mellitus.