The baseline characteristics of the two groups were largely comparable, including age at onset, gender composition, first muscle group affected, highest MGFA, severity as reflected by the most recent MGC/ADL score before time 0, MuSK antibody titers at time 0, RNS results, number of cases with muscle atrophy, or duration of disease before time 0 (Table 1A). The gene discussed is MUSK; the disease is muscle atrophy.