MUSK and myasthenia gravis: In LOMG, T-bet also showed a positive correlation with CD11c expression (r = 0.61, p = 0.047), with a similar trend observed in rituximab-naïve MuSK-MG subjects (r = 0.53, p = 0.064).The positive correlations between CD20 and T-bet, CD20 and CD11c, and CXCR5 and CD21 across MG subtypes suggest that the co-expression of these markers in CD11c+ B cells may be driven by shared regulatory mechanisms.