miR15b, miR122, miR140-3p, miR185, miR192, miR20b and miR885-5p show low levels in sera of MG patients.

No differences were found for miR375. Graphs show relative quantification of the miRNAs in the 3; EOMG  =  early onset MG; late onset MG; thymoma  =  thymoma MG; CTRL  =  healthy controls; *P<0.05; **P<0.01.