Journal
BONE MARROW TRANSPLANTATION
Volume 56, Issue 8, Pages 1964-1970Publisher
SPRINGERNATURE
DOI: 10.1038/s41409-021-01272-3
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Funding
- Jansen Cooperation
- Dutch Cancer Fund (KWF kankerbestrijding)
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The combination of decitabine with a standard non-myeloablative conditioning regimen prior to allogeneic hematopoietic cell transplantation can effectively reduce relapse incidence in poor risk AML patients. The study demonstrated a one-year relapse rate of 23% and a one-year overall survival of 70% in this patient population.
Patients with poor risk acute myeloid leukemia (AML) have a dismal outcome. We hypothesized that combining decitabine with a standard non-myeloablative (NMA) conditioning regimen prior to allogeneic hematopoietic cell transplantation (allo HCT), might decrease the relapse incidence. We conducted a multicenter prospective phase II study (NCT02252107) with 10-day decitabine (20 mg/m(2)/day) integrated in a standard non-myeloablative conditioning regimen (3 days fludarabine 30 mg/m(2) with 2 Gray total body irradiation (TBI)). Patients with AML >= 18 years in 1st (in)complete remission (CR/CRi) with a poor or very poor risk profile, as defined by the HOVON-132 protocol, were eligible. Results: Forty-six patients (median age 60; range 23-74) were included. Median follow up time was 44 months (range 31-65 months). The cumulative 1-year incidence of relapse and NRM were respectively 23% and 11%. Incidence of grade III-IV acute graft-vs-host-disease (GVHD) and severe chronic GVHD were 13% and 20%, respectively. One-year OS was 70%. Application of ELN 2017 risk classification to the study cohort revealed a cumulative one-year relapse rate of respectively 31% and 13% for the adverse and intermediate risk patients. To conclude, the 10-day DEC/FLU/TBI conditioning regimen prior to allo HCT in poor risk AML patients is effective and feasible.
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