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  • Title: [Acute myelomonocytic leukemia with eosinophilia and inversion of chromosome 16. Study of 6 cases].
    Author: Calvo R, Ribera JM, Millá F, Granada I, Orts M, Batlle M, Flores A, Juncà J, Feliu E.
    Journal: Med Clin (Barc); 1997 Feb 08; 108(5):182-5. PubMed ID: 9091723.
    Abstract:
    The purpose of this study has been to refer the main clinico-biologic characteristics, the evolution and the response to therapy in 6 patients with acute myelomonocytic leukemia with eosinophilia and inversion of chromosome 16 (AML4Eo inv[16]) belonging to a series of 92 patients with acute myeloblastic leukemia diagnosed in a single hospital between 1987 and 1995. The main clinical manifestations were anemic syndrome and hemorrhage. Anemia and thrombocytopenia were present in all cases, high white blood cell count in 4, monocytosis in 5 and eosinophilia in one. Bone marrow aspirate showed myeloid and monocytic blast infiltration (43-62%), eosinophilia (5-19%) and atypical monocytic precursors (6-18%). Induction therapy consisted in one or two cycles of daunorubicin (or idarubicin), cytosine arabinoside and etoposide, followed by two cycles of consolidation treatment, the first with mitoxanthrone and cytosine arabinoside and the second with amsacrine and cytosine arabinoside. One patient died in the induction phase, while complete remission was obtained in the remaining 5. One patient died during the consolidation therapy. Allogeneic bone marrow transplant (BMT) was performed to one patient and autologous BMT to another. The first patient remains in complete remission (CR) at 68 months from diagnosis, and the second relapsed 12 months after BMT. Another patient relapsed at 13 months from diagnosis and the remaining persists in CR 13 months from diagnosis. Actuarial probabilities of CR duration and survival were 50% at 5 years. The clinico-biologic characteristics and the response to therapy of patients with AML4Eo inv(16) are similar to those referred in other series. There is a high probability of CR attainment and, probably, the relapse rate is lower than that of other subtypes of AML.
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