Impact on RFS and OS of FLT3-ITD AR with cutoff value set at 0.5. (A) RFS. (B) OS. RFS and OS were found to be significantly more favorable in the low-AR group than in the high-AR group (RFS at 5 years: low-AR group 48.9% vs high-AR group 23.8%, P = .008; OS at 5 years: low-AR group 39.1% vs high-AR group 15.0%, P = .015).