IL2 and myasthenia gravis: Serum IL-2 had a positive correlation with age (r = 0.306, P = 0.0001) and a negative correlation with disease course (r = − 0.172, P = 0.036), baseline MG-ADL (r = − 0.166, P = 0.0419), QMG (r = − 0.161, P = 0.049) and MG-QoL15 (r = − 0.232, P = 0.0043).