Characteristics of preengraftment syndrome in patients with and without granulocyte therapy. (A) Higher levels of CRP were seen in patients who received granulocyte product vs those who did not (P < .001). (B) CRP peaked early in patients who received granulocyte product vs those who did not (P < .0003). (C) Oxygen was required early in patients who received granulocyte product vs those who did not (P < .01). Clinical features such as number of days of fever (D), maximum temperature (E), and number of days of oxygen (F) were not statistically different between 2 groups. NS, not significant.