TGFB1 and myeloid sarcoma: Future studies aimed at evaluating TGF-β1 production by B cells, regardless of their antigenic specificity, from MS subjects and healthy controls in response to modes of activation relevant to B-cell–T-cell interaction and MS [13, 17, 72] will allow for a better understanding of the contribution of B cell-derived TGF-β1 in this disease.