IL6 and lymphoproliferative syndrome: So, there is chance to use antibodies to block IL-6 or the receptor of IL-6 such as siltuximab (Sylvant TM EUSA Pharma), tocilizumab (ActemraTM Roche Genetech), sarilumab (KevzaraTM Regeneron), these are approved by FDA for certain conditions includes the rheumatological and lymphoproliferative disorders.