Annals of Oncology 13:450-459, 2002
© 2002 European Society for Medical Oncology
Risk of therapy-related myelodysplastic syndrome/acute leukemia following high-dose therapy and autologous bone marrow transplantation for non-Hodgkins lymphoma
Departments of Blood and Marrow Transplantation and Biostatistics, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
Received 13 July 2001; revised 19 September 2001; accepted 23 October 2001.
Background
Several recent reports have suggested that patients with non-Hodgkins lymphomas (NHL) who undergo autologous stem cell transplantation (ASCT) are at increased risk of developing therapy-related myelodysplastic syndrome (tMDS) and acute myelogenous leukemia (tAML).
Patients and methods
We analyzed 493 patients with NHL who underwent ASCT at The University of Texas M.D. Anderson Cancer Center between January 1990 and August 1999.
Results
With a median follow-up time of 21 months after HDT, 22 patients developed persistent cytopenia in at least one cell line with morphologic or cytogenetic evidence of tMDS or tAML. Univariate analysis identified prior fludarabine therapy, bone marrow involvement with lymphoma, and total body irradiation (TBI) as significant risk factors for the development of tMDS/tAML (P <0.05). Multiple logistic regression analysis showed that TBI was independently associated with an increased risk of developing tMDS/tAML (P <0.01). Further analysis of the patients who received TBI revealed that patients receiving TBI in combination with cyclophosphamide and etoposide were more likely to develop tMDS/tAML than those who received TBI with cyclophosphamide or thiotepa (P <0.01). The median survival of patients developing tMDS/tAML was 7.5 months (range 032 months).
Conclusions
TBI, especially when used in combination with cyclophosphamide and etoposide as the pretransplant conditioning regimen, is a significant risk factor for the development of tMDS/tAML.
Key words: autologous transplantation, non-Hodgkins lymphoma, therapy-related acute myelogenous leukemia, therapy-related myelodysplasia
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