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Conditioning Intensity in Middle-Aged Patients With Aml in First Cr: No Advantage for Myeloablative Regimens Irrespective of the Risk Group-An Observational Analysis by the Acute Leukemia Working Party of the Ebmt Publisher Pubmed



Passweg JR1 ; Labopin M2 ; Cornelissen J3 ; Volin L4 ; Socie G5 ; Huynh A6 ; Tabrizi R7 ; Wu D8 ; Craddock C9 ; Schaap N10 ; Kuball J11 ; Chevallier P12 ; Cahn JY13 ; Blaise D14 Show All Authors
Authors
  1. Passweg JR1
  2. Labopin M2
  3. Cornelissen J3
  4. Volin L4
  5. Socie G5
  6. Huynh A6
  7. Tabrizi R7
  8. Wu D8
  9. Craddock C9
  10. Schaap N10
  11. Kuball J11
  12. Chevallier P12
  13. Cahn JY13
  14. Blaise D14
  15. Ghavamzadeh A15
  16. Bilger K16
  17. Ciceri F17
  18. Schmid C18
  19. Giebel S19
  20. Nagler A20
  21. Mohty M21

Source: Bone Marrow Transplantation Published:2015


Abstract

In recipients of allogeneic hematopoietic stem cell transplantation with AML in CR1, reduced intensity (RIC) conditioning regimens are usually given to older patients and myeloablative regimens (MAC) to younger patients. We analyzed whether in middle-aged patients aged 40-60 years, MAC was superior to RIC in cytogenetically higher risk AML. Among 2974 patients, 1638 had MAC and 1336 RIC transplants. Cytogenetics were high risk in 508, intermediate risk in 2297 and low risk in 169. Overall survival (OS) was higher in patients with RIC with low-risk cytogenetics but not in the intermediate- or poor-risk AML. Relapse incidence was lower with MAC in poor- and intermediate-risk AML. Nonrelapse mortality (NRM) was higher in MAC in all cytogenetic risk groups. Multivariate analysis confirmed a significant leukemia-free survival and OS advantage for RIC in low risk but no advantage of MAC in intermediate- and poor-risk leukemia. In patients aged 40-60 years, MAC has no advantage over RIC. We confirm lower relapse but higher NRM risks with MAC. MAC is not superior in patients with higher risk cytogenetics, but is inferior to RIC in the small cohort of AML patients with low-risk cytogenetics. © 2015 Macmillan Publishers Limited.
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