Analyses using quintiles revealed that risk of T1D complications increases with increasing concentrations of IGFBP-2 (fifth quintile ORs: 18–60, p < 10−26), IGFBP-1 (fifth quintile ORs: 8–20, p < 10−15), and IGFBP-6 (fifth quintile ORs: 3–148, p < 10−3). Here, IGFBP6 is linked to type 1 diabetes mellitus.