Emapalumab (IFNg inhibitor) Effective in severe MAS (Ferritin 25K, failed anakinra, GC)- 14 pts (2-25 yrs; 4/14 sJIA)-13/14 remission, w rapid drops in CXCL9, Ferritin, ALT, DDimers & GC dose #ACR21 ABst LB20 https://t.co/05oW5C8Waf https://t.co/ecEkt3MY83