IFNB1 and myeloid sarcoma: In a study by Schwid, et al.,18 which was conducted on the effects of IFN-β therapy in the management of relapsing MS, the results were consistent with the results of our study and showed that, compared with IM IFN-βa-1a 30 mcg QW, using SC IFN-β-1a 44 mcg TIW for the treatment of MS patients was associated with a significant reduction in clinical and imaging measures of disease activity over 1-2 years.