S100A8 and juvenile idiopathic arthritis: In a pilot study on three children with JIA-uveitis, elevated levels of proteins associated with inflammatory arthritis (SEMA3G, TIMP1, HEXB, ERN1, and SAA1) was found, in addition to elevated levels of sCD14, S100A8, and SAA1, but reduced levels of S100A9, LAP3, TTR, and MIF [87].