VDR and type 2 diabetes mellitus: To date, eighteen studies have examined the association between the VDR FokI SNP and T2D (Table 2); five studies in the Saudi, Emirati, Egyptian and the Chilean populations (n = 100–4,077) [53, 78, 81, 83, 85] and three meta-analyses (n = 2,070–4,077) in Asians and Caucasians [94–96] have reported significant associations.