Selected patient characteristics and transplant outcomes. (A) Number of previous therapies. (B) Number of HLH-2004 criteria fulfilled at the time of conditioning. (C) IFS. (D) Probability of second HSCT. ∗∗∗∗P < .0001; ∗∗P < .01; ∗P < .05. Ema, emapalumab. See Figures 1, 3, and 4 in the article by Verkamp et al that begins on page 2625. Professional illustration by Patrick Lane, ScEYEnce Studios.