Variants of the ZnT8 coding gene, SLC30A8, which predisposes to T1D, have already been searched with contradictory results18, 10, whereas the rs16889462 and rs2466293 variants have been mainly related to impaired glucose metabolism and T2D risk in Europeans and Asians14–16, 28. The gene discussed is SLC30A8; the disease is type 1 diabetes mellitus.