HSPA1A and myasthenia gravis: We detected significant higher serum concentrations of HSP27 in MG patients compared to volunteers (HSP27[pg/ml]: 507.5 ± 89.5 vs. 215.5 ± 35.9; p = 0.005), whereas there was no significant difference for HSP70 (HSP70[ng/ml]: 1.5 ± 0.2 vs. 1.1 ± 0.2; p = 0.088; Table 3; Fig. 6).