In MS, there is an increase in the expression of proinflammatory cytokines (IFNγ, TNF, IL2, and IL22) as well as molecules associated with sustained B lymphocyte activity and lymphoid neogenesis (CXCL13, CXCL10, LTα, IL6, and IL10). Here, CXCL13 is linked to myeloid sarcoma.