Adult acute erythroleukemia: an analysis of 91 patients treated at a single institution.
Adult acute erythroleukemia: an analysis of 91 patients treated at a single institution.
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Acute erythroleukemia (AML-M6) is an uncommon subtype of acute myeloid leukemia (AML); it is considered to have a poor prognosis. From January 1st, 1980 to May 21st, 2008, 108 patients with newly diagnosed AML-M6 were seen at the University of Texas – M.D. Anderson Cancer Center (UT-MDACC). Half (50%) had a history of myelodysplatic syndrome (MDS), compared to 41% in our control group (patients with other AML subtypes) (p=0.05). Poor risk cytogenetics was more common in patients with AML-M6 (69% versus 46%, p<0.001). Complete remission rates were 63% for patients with AML-M6, comparing to 58% for the control group (p = 0.285). Median disease free survival (DFS) for patients with AML-M6 was 31 weeks, versus 49 weeks for the control group (p = 0.004). Median overall survival (OS) of patients with AML-M6 was 33 weeks, compared to 42 weeks for the control group (p = 0.13). On multivariate analysis for DFS and OS, AML-M6 was not an independent risk factor. Acute erythroleukemia is commonly associated with a previous diagnosis of MDS and poor risk karyotype. The diagnosis of AML-M6 does not impart by itself a worse prognosis, and treatment decisions on this disease should be guided by well know AML prognostic factors.