CPZ and myeloid sarcoma: Observing (i) a continuous increase in the expression level of miR-146a in contrast to the two other miRNAs, (ii) considering its biological function, and (iii) also the differential expression in brain lesions, body fluids, and cells obtained from MS patients (8, 13, 18, 19, 25–27), we further investigated the role of miR-146a in CPZ-induced de- and remyelination.