Relapse rate according to FLT3/ITD status in patients who received a transplant in first complete remission. (A) Patients receiving an autograft. (B) Patients who received an autograft with low-level (< 45%) or high-level (≥ 45%) mutant FLT3/ITD. (C) Patients receiving a matched sibling allograft. Obs indicates observed; Exp, expected.