INS and metabolic syndrome: Three of our four SNPs (rs3116150, rs3813008, rs9934336) were also studied by Enigk et al. for association with glucose and insulin concentrations during a 3-point OGTT in Sorbs (N = 1,013) and a 5-point OGTT in the Metabolic Syndrome Berlin Potsdam study (N = 2,042) [14].