Biomarker subanalysis of a phase 3 RCT of SC Abatacept in 219 polyarticular JIA pts. Lower baseline levels of S100A8/9 & S100A12 predicted better response (JIA-ACR90 2.5) at 16 mos. Decr in S100A8/9 & S100A12 @4mos was >50% among responders https://t.co/TWx62EhRBl https://t.co/6uhoRowg3n