MUSK and myasthenia gravis: These symptoms did not differ significantly between groups, except for cervical weakness, which was higher in the MG MuSK-Abs subgroup than in other subgroups (p = 0.05) and was associated with an OR of 17.7 (95% CI 1.25-255.9) for MuSK-Abs MG compared to AChR-Abs MG.