Remission was achieved in 71.4% of the MuSK antibody-positive MG vs. 35.9% of the AChR antibody-positive patients (p = 0.022). An outcome of MM was achieved in 85.7% of the MuSK antibody-positive patients and 64.1% of the AChR antibody-positive patients. Here, MUSK is linked to Miyoshi myopathy.