ApoA-I from people with well-controlled Type 1 diabetes had lower Arg and Lys than controls (Arg: 90.5±9.4% vs 100.0±7.6%; Lys: 93.2±4.5% vs 100.0±7.6; both p<0.05) (Fig. 7A). This evidence concerns the gene APOA1 and type 1 diabetes mellitus.