Comparative analysis of the value of allogeneic hematopoietic stem-cell transplantation in acute myeloid leukemia with monosomal karyotype versus other cytogenetic risk categories

Jan J. Cornelissen, Dimitri Breems, Wim L.J. Van Putten, Alois A. Gratwohl, Jakob R. Passweg, Thomas Pabst, Johan Maertens, H. Berna Beverloo, Marinus Van Marwijk Kooy, Pierre W. Wijermans, Bart J. Biemond, Edo Vellenga, Leo F. Verdonck, Gert J. Ossenkoppele, Bob Loẅenberg

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Abstract

Purpose: To determine to what extent allogeneic hematopoietic stem-cell transplantation (alloHSCT) quantitatively reduces relapse in acute myeloid leukemia with monosomal karyotype (MK-AML) compared with alternative postremission therapy and how it compares with other cytogenetic subcategories. Patients and Methods: Of 2,560 patients (younger than age 61 years) without core-binding factor abnormalities including 305 patients with MK-AML receiving first-line induction treatment, 1,975 patients (77%) achieved remission, and 1,588 received consolidation in the first complete remission (CR1) after two induction cycles. Consolidation treatment of 107 patients with MK-AML consisted of alloHSCT (n = 45), chemotherapy (n = 48), or autologous HSCT (n = 14). Results: The 5-year overall survival after start of consolidation was 19% for patients with MK-AML who received alloHSCT and 9% for those who received chemotherapy or autoHSCT (P = .02). Relapse-free survival (RFS) at 5 years was 17% versus 7% (P = .003). Cox regression analysis was performed with alloHSCT as a time-dependent covariate. Hazard ratios (HRs) associated with alloHSCT for relapse and RFS were 0.30 (95% CI, 0.24 to 0.37; P < .001), and 0.52 (95% CI, 0.43 to 0.62; P < .001), respectively. HRs were similar in MK-AML and the other cytogenetic subgroups. Conclusion: AlloHSCT, applied as consolidation in CR1, is associated with a significant reduction of relapse and improvement of survival in MK-AML, with the same relative reduction of relapse or death as in other cytogenetic risk categories.

Original languageEnglish
Pages (from-to)2140-2146
Number of pages7
JournalJournal of clinical oncology
Volume30
Issue number17
DOIs
Publication statusPublished - 10 Jun 2012

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