IL2 and autoimmune polyendocrinopathy: Similarly, the plasma IFN-α (0.115 ± 0.012 vs. 0.094 ± 0.010 ng/mg plasma protein, p = 0.007) and plasma IL-2 (2.65 ± 0.29 vs. 2.13 ± 0.37 pg/mg plasma protein, p = 0.022) were also significantly higher in the APS group than in the control group (Figure 4B,C).