MUSK and myasthenia gravis: Although there was no significant difference in the prevalence of bulbar symptoms between the groups, there was a trend toward a higher frequency of symptoms in MuSK-Abs MG than in AChR-Abs MG and triple-seronegative MG, as previously reported.23, 26According to Rodolico et al.,27bulbar impairment has been found in up to 80% of patients with MuSK-Abs MG.