Single center comparison of pts with MAS vs malignancy assoc. HLH (mHLH) – overall MAS had less hepatomegaly (0 v 25%), double platelet #s (50 v 29Kµ/L), but lower sIL-2R (6814 vs. 27,972.0) and less mortality (22 v 44%, p=0.18). https://t.co/NGIaPTU0yT