#ACR22 Abstr#0004 Macrophage Activation Syndrome is associated with Systemic JIA #arthritis but how do they link up? Mice studies show mTORC1 is a key driver. Studies needed to assess mTORC1-inhibitor e.g. rapamycin, sirolimus etc. for SJIA-related MAS @RheumNow https://t.co/sH9seK1n8u