IGHG3 and Miyoshi myopathy: Significantly lower antibody levels in CM patients compared to MM patients for anti- MSP-1d83, MSP-119 and MSP-636 IgG1 antibodies (P < 0.05) (Figure 5A) and anti- MSP-1f42 and MSP-722 IgG3 antibodies (P < 0.05) (Figure 5B) were observed.