“…23 While standardized treatment modalities have not yet been established, several promising approaches are being pursued. 16,24,25 Antineoplastic chemotherapy with single or combination agents has yielded clinical remissions, though the responses are typically transient and drug toxicities limit extended use. Successes have been reported with immunotherapy using monoclonal antibodies (mAbs) tocilizumab (Actemra ® ), 26 and siltuximab 27 against interlekin-6 or rituximab against the B-cell antigen CD20, 18,[28][29][30][31] though the latter agent has been complicated by aggravation of KS lesions.…”