There was no significant correlation between FoxP3+ Treg and the TGF-β (p = 0.416) and IL-10 (p = 0.928) levels in the patients with MG, but it is interesting that although there was no significant correlation between Tr1 cells and TGF-β concentrations (p = 0.371), Tr1 cells were positively correlated with IL-10 levels (p = 0.048). This evidence concerns the gene TGFB1 and myasthenia gravis.