Relative reduction of AML length was not different by XTR and NT/NTR device (Δ-AML length − 22.9 ± 8% vs. − 24.0 ± 8.9%, p = 0.10) while relative reduction of PML length was greater by XTR compared to NT/NTR device (Δ-PML length − 42.9 ± 11.9% vs. − 32.7 ± 8.5%, p = 0.001). This evidence concerns the gene PML and acute myeloid leukemia.