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. 2020 Aug 25;4(16):3840-3849.
doi: 10.1182/bloodadvances.2020002511.

Delivering HDAC over 3 or 5 days as consolidation in AML impacts health care resource consumption but not outcome

Affiliations

Delivering HDAC over 3 or 5 days as consolidation in AML impacts health care resource consumption but not outcome

Pierre-Yves Dumas et al. Blood Adv. .

Abstract

Postremission treatment is crucial to prevent relapse in acute myeloid leukemia (AML). High-dose cytarabine delivered every 12 hours on days 1, 3, and 5 (HDAC-135) is the standard of care for younger adult patients with AML. Although this standard has been unsuccessfully challenged by other treatment regimens, including multiagent chemotherapy, the timing of HDAC administration has attracted little attention. Here, we retrospectively compared the safety, efficacy, and health care resource consumption associated with HDAC-135 and another standard, condensed HDAC-123 regimen, as consolidation treatment in younger AML patients in first complete response. This study included 221 patients (median age, 46.6 years; range, 18-60 years). HDAC-123 and HDAC-135 were used in 92 and 129 patients, respectively. Both regimens were associated with similar rates of relapse-free survival, cumulative incidence of relapse, nonrelapse mortality, and overall survival, including in core binding factor AML subgroup in which levels of minimal residual disease reduction were similar in both schedules. Hematological recovery times regarding neutrophils and platelets were significantly shorter in patients receiving HDAC-123, with an average difference of 3 to 4 days for each consolidation cycle. The total duration of hospitalization for the whole postremission program was shorter with HDAC-123 (32 days; interquartile ratio [IQR], 22.0,36.5) compared with HDAC-135 (41 days; IQR, 30.5, 50.0) (P < .0001). In conclusion, the condensed HDAC-123 regimen induced faster hematological recovery and therefore significantly reduced the length of hospital stay without affecting treatment response or outcome in younger AML patients.

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Conflict of interest statement

Conflict-of-interest disclosure: P.-Y.D. has served on advisory boards for Daiichi-Sankyo and Astellas. S.B. has served on advisory boards for Daiichi-Sankyo, Astellas, Sanofi, and Jazz Pharmaceuticals. A.B. has served on advisory boards for Daiichi-Sankyo and Novartis. A.P. has received research grants to his institution from Incyte, Janssen, Gilead, Sanofi, Amgen, Novartis, Celgene, Jazz Pharma, Daiichi-Sankyo, Astellas, Roche; and served on advisory boards for Sanofi, Takeda, AbbVie, Janssen, Jazz Pharma, Daiichi-Sankyo, Astellas, Novartis, Celgene, Otsuka, Sunesis, Roche, and Pfizer. C.R. has received research grants to his institution from AbbVie, Amgen, Novartis, Celgene, Jazz Pharma, Agios, Daiichi-Sankyo, Astellas, Sunesis, Roche, and MaatPharma; and served on advisory boards for AbbVie, Janssen, Jazz Pharma, Daiichi-Sankyo, Astellas, Novartis, Celgene, Otsuka, Sunesis, Roche, Otsuka, Macrogenics, and Pfizer. The remaining authors declare no competing financial interests.

Figures

None
Graphical abstract
Figure 1.
Figure 1.
Outcomes among 221 patients with newly diagnosed acute myeloid leukemia. Overall survival by treatment arm (A); relapse-free survival by treatment arm (B); cumulative incidence (CI) of relapse by treatment arm (C); and cumulative incidence of nonrelapse mortality by treatment arm (D).
Figure 2.
Figure 2.
Reduction of fusion transcript ratio in 73 CBF AML patients. Thirty-three (45.2%) in the HDAC-123 arm and 40 (54.8%) in the HDAC-135 arm, at CR1/CRi1, median ratio at diagnosis (Diag), and at the MRD1, MRD2, MRD3, and MRD4 time points, for the HDAC-123 arm (red bars) and HDAC-135 arm (blue bars), in bone marrow (A) and in blood (B). Outcomes among patients with newly diagnosed CBF-AML in CR1/CRi1: overall survival by treatment arm (n = 73; P = .54) (C) and relapse-free survival by treatment arm (n = 73; P = .52) (D).

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