IL10 and Guillain-Barre syndrome: In addition, patients with severe form of GBS had significantly higher serum IL‐10 levels compared to the mild form of GBS (Mean [severely affected], 15.25 ± 51.72 pg/mL vs. mean [mildly affected], 3.59 ± 19.79 pg/mL, p = 0.046; Fig. 1B).