IL21 and myasthenia gravis: IL-21, IL-4, IL-17A, and IL-10 productions were increased in AChR-MG patients (n = 54, p < 0.001, p < 0.001, p = 0.001, and p = 0.014, respectively), whereas IFN-γ was lower compared to that in HC (n = 38, p = 0.023) (Figure 1B).