Response to: ‘Comparison of MS score and HScore for the diagnosis of adult-onset Still’s disease associated macrophage activation syndrome’ by Zhanget al

We thank Zhang et al 1 for their interest in our MAS/sJIA (MS) score for diagnosis of macrophage activation syndrome (MAS) in systemic juvenile idiopathic arthritis (sJIA).2 Considering that sJIA and adult-onset Still’s disease (AOSD) are nowadays thought to constitute a continuum of a single disease entity3 4 and that they share a similar risk for MAS, it is worth evaluating whether the proposed diagnostic tools are suitable to detect MAS in...