Abstract
Less-intense remission induction regimens for adults with newly diagnosed acute myeloid leukemia (AML) aim to reduce treatment-related mortality (TRM), here defined as death within 4 weeks after starting induction therapy. This assumes that TRM rates are similar to the 15–20% observed 20 years ago. Herein we test this assumption. We examined TRM rates in 1409 patients treated on SWOG (Southwest Oncology Group) trials and 1942 patients treated at MD Anderson (MDA) from 1991 to 2009. Eighty-eight percent of SWOG patients received ‘3+7’ or regimens of similar intensity while 92% of the MDA patients received ara-C at 1.5–2.0 g/m2 daily × 3–5 days+other cytotoxic agents. We examined the relationship between time and TRM rates after accounting for other covariates. TRM rates between 1991 and 2009 decreased from 18–3% in SWOG and 16–4% at MDA. Multivariate analyses showed a significant decrease in TRM over time (P=0.001). The decrease in TRM was not limited to younger patients, those with a better performance status or a lower white blood cell count. Though our observations are limited to patients treated with intensive therapy at SWOG institutions and MDA, the decrease in TRM with time emphasizes the problem with historical controls and could be considered when selecting AML induction therapy.
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MO: analyzed and interpreted data, performed statistical analysis, principal writer and corresponding author; HK, SP, FR, JG, JC, HE, SF: data collection, data interpretation and manuscript writing; SP: data collection and manuscript writing; FRA: analyzed and interpreted data, aided in writing and administrative support; EHE: designed research, analyzed and interpreted data and manuscript writing.
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Othus, M., Kantarjian, H., Petersdorf, S. et al. Declining rates of treatment-related mortality in patients with newly diagnosed AML given ‘intense’ induction regimens: a report from SWOG and MD Anderson. Leukemia 28, 289–292 (2014). https://doi.org/10.1038/leu.2013.176
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DOI: https://doi.org/10.1038/leu.2013.176
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