We determined levels of serum circulating microRNAs in MuSK + MG patients.
MiR-151a-3p, let-7a-5p, let-7f-5p and miR-423-5p are elevated in MuSK + MG sera.
The microRNA profile in MuSK + MG differs from that reported in AChR + MG.
Especially the let-7 microRNA family seems connected to MuSK + MG.