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Semin Oncol. 2013 Dec;40(6):666-75. doi: 10.1053/j.seminoncol.2013.09.013.

Therapy-related myelodysplasia and acute myeloid leukemia.

Author information

1
Department of Population Sciences, City of Hope Comprehensive Cancer Center, Duarte, CA. Electronic address: sbhatia@coh.org.

Abstract

Therapy-related leukemia (myelodysplasia and acute myeloid leukemia-t-MDS/AML) is a well-known complication of conventional chemoradiotherapy used to treat a variety of primary malignancies including Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL), acute lymphoblastic leukemia (ALL), sarcoma, and ovarian and testicular cancers. The median time to development of t-MDS/AML is 3-5 years, with the risk decreasing markedly after the first decade. t-MDS/AML is the major cause of non-relapse mortality after autologous hematopoietic cell transplantation (HCT) for HL or NHL. The magnitude of risk of t-MDS/AML is higher, and the latency is shorter after HCT, compared to conventional therapy. Two types of t-MDS/AML are recognized depending on the causative therapeutic exposure: an alkylating agent/radiation-related type and a topoisomerase II inhibitor-related type. Inter-individual variability in the risk for development of t-MDS/AML suggests a role for genetic variation in susceptibility to genotoxic exposures. Treatment of t-MDS/AML with conventional therapy is associated with a uniformly poor prognosis, with a median survival of 6 months. Because of the poor response to conventional chemotherapy, allogeneic HCT is recommended. Current research is focused on developing risk prediction and risk reduction strategies.

PMID:
24331189
PMCID:
PMC3867743
DOI:
10.1053/j.seminoncol.2013.09.013
[Indexed for MEDLINE]
Free PMC Article

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