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[Therapy-related acute myeloid leukemia: role of DNA repair].

The survival improvement of patients treated with chemotherapy or radiotherapy for malignancies are increasing therapy-related acute myeloid leukemia (t-AML). It was thought to be the direct consequence of genetic events induced by such treatments. We here review the mechanisms of specific chemotherapy-related DNA damage inducing the chromosomal or genomic abnormalities characteristic of t-AML. We also focus on how such aberrations could initiate or participate to leukemogenesis. However, only a part of patients exposed to cytotoxic therapy is developing t-AML, suggesting that some genetic predisposition may be involved such as polymorphisms in genes related to DNA repair.