Table 1.

Patient characteristics and FLT3-ITD results

Patient numberAge/sexInduction therapyITD mutation by CE-PCR at diagnosisITD mutation by MRD assay at diagnosisITD mutation by MRD assay at remissionClinical outcome
Length, bpVAF, %Length, bpVAFLength, bpVAF
59/F AcIVP16 51 51 7.7 51 0.0017 Alive, disease free 5 y after diagnosis 
30 30 1.42 30 (ND) 
56/F AcIVP16 51 37 51 47.48 51 0.0027 Alive, disease free 5 y after diagnosis 
64/M AcIVP16 81 46 81 75.69 81 0.020 Alive, disease free 3 y after diagnosis 
67/M 7 + 3 + gilteritinib 21 21 3.93, 0.16 None detected Alive, disease free 1 y after diagnosis 
60 
67/F AcIVP16 18 18 11.09 18 0.0077 Alive, disease free 4 y after diagnosis 
30 0.10 30 (ND) 
39 0.35 39 (ND) 
56/M 7 + 3 + gilteritinib 51 81 51 85.77 51 0.06 Alive, disease free 2.5 y after diagnosis 
52/M AcIVP16 27 24 0.57 24 0.2 Relapsed with the 42-bp ITD, died of relapsed disease 2 y after diagnosis 
42 <5 27 5.68 27 0.099 
93 <5 42 0.75 42 0.1 
96 <5 63 0.20 63 0.22 
  93 7.02 93 (ND) 
  96 11.45 96 0.013 
31/F 7 + 3 + midostaurin 15 45 15 45.27 15 0.004 Alive, disease free 2 y after diagnosis 
72/F 7 + 3 + midostaurin 33 33 6.48, 0.32 33 0.005 Alive, disease free 2 y after diagnosis 
69 69 (ND) 
10 68/F 7 + 3 24 37 24 39.53 24 0.018 Alive, disease free 4 y after diagnosis 
11 57/F AcIVP16 15 45 15 44.39 15 0.04 Relapsed with the 15-bp ITD and died 1 y after diagnosis 
12 43/M 7 + 3 + midostaurin 60 30 60 38.36 60 0.008 Alive, disease free 2 y after diagnosis 
13 67/F 7 + 3 + gilteritinib 27 10 27 25.52, 1.87 27 0.003 On gilteritinib maintenance after transplant, relapsed with AML lacking ITD 
108 108 (ND) 
14 47/M 7 + 3 + sorafenib 72 72 30.97 72 0.005 Died of GVHD 19 mo after diagnosis 
15 68/F 7 + 3 45 31 45 46.7 45 2.17 Alive, disease free 4 y after diagnosis 
16 60/M 7 + 3 + gilteritinib 24 36 24 37.63 24 0.004 Alive, disease free 2 y after diagnosis 
17 44/F AcIVP16 48 72 48 70.37 48 0.031 Alive, disease free 5 y after diagnosis 
Patient numberAge/sexInduction therapyITD mutation by CE-PCR at diagnosisITD mutation by MRD assay at diagnosisITD mutation by MRD assay at remissionClinical outcome
Length, bpVAF, %Length, bpVAFLength, bpVAF
59/F AcIVP16 51 51 7.7 51 0.0017 Alive, disease free 5 y after diagnosis 
30 30 1.42 30 (ND) 
56/F AcIVP16 51 37 51 47.48 51 0.0027 Alive, disease free 5 y after diagnosis 
64/M AcIVP16 81 46 81 75.69 81 0.020 Alive, disease free 3 y after diagnosis 
67/M 7 + 3 + gilteritinib 21 21 3.93, 0.16 None detected Alive, disease free 1 y after diagnosis 
60 
67/F AcIVP16 18 18 11.09 18 0.0077 Alive, disease free 4 y after diagnosis 
30 0.10 30 (ND) 
39 0.35 39 (ND) 
56/M 7 + 3 + gilteritinib 51 81 51 85.77 51 0.06 Alive, disease free 2.5 y after diagnosis 
52/M AcIVP16 27 24 0.57 24 0.2 Relapsed with the 42-bp ITD, died of relapsed disease 2 y after diagnosis 
42 <5 27 5.68 27 0.099 
93 <5 42 0.75 42 0.1 
96 <5 63 0.20 63 0.22 
  93 7.02 93 (ND) 
  96 11.45 96 0.013 
31/F 7 + 3 + midostaurin 15 45 15 45.27 15 0.004 Alive, disease free 2 y after diagnosis 
72/F 7 + 3 + midostaurin 33 33 6.48, 0.32 33 0.005 Alive, disease free 2 y after diagnosis 
69 69 (ND) 
10 68/F 7 + 3 24 37 24 39.53 24 0.018 Alive, disease free 4 y after diagnosis 
11 57/F AcIVP16 15 45 15 44.39 15 0.04 Relapsed with the 15-bp ITD and died 1 y after diagnosis 
12 43/M 7 + 3 + midostaurin 60 30 60 38.36 60 0.008 Alive, disease free 2 y after diagnosis 
13 67/F 7 + 3 + gilteritinib 27 10 27 25.52, 1.87 27 0.003 On gilteritinib maintenance after transplant, relapsed with AML lacking ITD 
108 108 (ND) 
14 47/M 7 + 3 + sorafenib 72 72 30.97 72 0.005 Died of GVHD 19 mo after diagnosis 
15 68/F 7 + 3 45 31 45 46.7 45 2.17 Alive, disease free 4 y after diagnosis 
16 60/M 7 + 3 + gilteritinib 24 36 24 37.63 24 0.004 Alive, disease free 2 y after diagnosis 
17 44/F AcIVP16 48 72 48 70.37 48 0.031 Alive, disease free 5 y after diagnosis 

All 17 patients had normal/intermediate karyotype and NPM1 mutation at diagnosis. All 17 patients achieved complete remission after a single cycle of induction therapy, and all underwent allogeneic transplant in first remission. Chemotherapy regimens: AcIVP16 = Cytarabine 2000 mg/m2 continuous infusion days 1 to 3, idarubicin 8 mg/m2 per day on days 1 to 3, etoposide 400 mg/m2 per day on days 8 to 10; 7 + 3 = cytarabine 100 to 200 mg/m2 per day on days 1 to 7, idarubicin 12 mg/m2 per day on days 1 to 3.

GVHD, graft-versus-host disease; ND, not detectable; VAF, variant allele frequency.

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