HLA-Identical Sibling Allogeneic Transplants versus Chemotherapy in Acute Myelogenous Leukemia with t(8;21) in First Complete Remission: Collaborative Study between the German AML Intergroup and CIBMTR

Richard F. Schlenk, Marcelo C. Pasquini, Waleska S. Pérez, Mei Jie Zhang, Jürgen Krauter, Joseph H. Antin, Asad Bashey, Brian J. Bolwell, Thomas Büchner, Jean Yves Cahn, Mitchell S. Cairo, Edward A. Copelan, Corey S. Cutler, Hartmut Döhner, Robert Peter Gale, Osman Ilhan, Hillard M. Lazarus, Jane L. Liesveld, Mark R. Litzow, David I. MarksRichard T. Maziarz, Philip L. McCarthy, Stephen D. Nimer, Jorge Sierra, Martin S. Tallman, Daniel J. Weisdorf, Mary M. Horowitz, Arnold Ganser

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

We studied the role of HLA-matched sibling hematopoietic cell transplantation (HCT) in treating t(8;21) acute myelogenous leukemia (AML) in first remission. Outcomes of 118 patients receiving HCT and reported to the Center for International Blood and Marrow Transplant Research were compared with 132 similar patients receiving chemotherapy selected from 8 German AML Intergroup multicenter trials. Characteristics of the cohorts were similar except that chemotherapy recipients were significantly older. To adjust for time to treatment bias, outcomes were compared using left-truncated Cox regression models. Transplants were associated with higher treatment-related mortality (TRM; relative risk [RR] 6.76, 95% confidence interval [CI] 2.95-15.45, P < .001), lower relapse (RR 0.47, 95% CI 0.25-0.85, P = .01), and similar relapse-free survival (P = .2). Loss of sex chromosomes (LOS) in addition to t(8;21) had a negative impact on overall survival (OS) in patients receiving chemotherapy. Patients without LOS experienced shorter survival after HCT comparing to chemotherapy (RR 3.05, P = .02), whereas patients with LOS had similar survival regardless of postremission therapy. In both cohorts, white blood cell count (WBC) at diagnosis >25 × 109/L was associated with a higher relapse risk (RR = 2.09, P = .03), lower relapse-free (RR = 1.9, P = .008), and OS (RR = 1.91, P = .01). In this cohort of patients with t(8;21) AML, HCT did not improve OS, because reduction of relapse was offset by high TRM. In the group without LOS, survival after chemotherapy was far superior to HCT. These results suggest that patients with t(8;21) AML without poor prognostic factors have higher rates of survival after chemotherapy as a post remission therapy compared to HCT.

Original languageEnglish (US)
Pages (from-to)187-196
Number of pages10
JournalBiology of Blood and Marrow Transplantation
Volume14
Issue number2
DOIs
StatePublished - Feb 1 2008

Keywords

  • AML
  • Chemotherapy
  • Hematopoietic stem cell transplantation
  • t(8;21)

ASJC Scopus subject areas

  • Hematology
  • Transplantation

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    Schlenk, R. F., Pasquini, M. C., Pérez, W. S., Zhang, M. J., Krauter, J., Antin, J. H., Bashey, A., Bolwell, B. J., Büchner, T., Cahn, J. Y., Cairo, M. S., Copelan, E. A., Cutler, C. S., Döhner, H., Gale, R. P., Ilhan, O., Lazarus, H. M., Liesveld, J. L., Litzow, M. R., ... Ganser, A. (2008). HLA-Identical Sibling Allogeneic Transplants versus Chemotherapy in Acute Myelogenous Leukemia with t(8;21) in First Complete Remission: Collaborative Study between the German AML Intergroup and CIBMTR. Biology of Blood and Marrow Transplantation, 14(2), 187-196. https://doi.org/10.1016/j.bbmt.2007.10.006