From: Tocilizumab modifies clinical and laboratory features of macrophage activation syndrome complicating systemic juvenile idiopathic arthritis
Tocilizumab
Historic cohort
Full-blown
Possible
All
Number with sufficient data
2
10
12
8
18
MAS (%, n)
50 (1/2)
20 (2/10)
25 (3/12)
90 (9/10)
75 (6/8)
83 (15/18)
Reasons missing (n)
Afebrile [1]
Afebrile [4]
Other markers [2]
Ferritin [5]