IL36B and Guillain-Barre syndrome: Additionally, statistically significant correlations were not observed between serum IL-36β levels and serum IL-36α, IL-36γ, or IL-36Ra levels in GBS patients (r = 0.168, P = .288, Fig. 3a; r = 0.295, P = .058, Fig. 3d; r = −0.194, P = .218, Fig. 3e, respectively).