M-CSF significantly reduced the incidence and duration of febrile neutropenia during the intensive consolidation therapy, and shortened the time to complete consolidation chemotherapy in AML.

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We report here a patient with de novo acute myelocytic leukemia with trilineage myelodysplasia (AML/TMDS) in whom cytogenetic analysis was normal at diagnosis and in whom Philadelphia chromosome (Ph1) with monosomy 7 emerged at the terminal stage of the disease. Reverse transcription polymerse chain reaction (RT-PCTR) on the Ph1 positive specimen detected the mRNA encoding p190bcr/abl but did not detect mRNA encoding p210bcr/abl. However, mRNA encoding p190bcr/abl was not detected at diagnosis and or at relapse. These observations support the hypothesis that late-appearing Ph1 and monosomy 7 might be the result of clonal evolution during the course of leukemia, and p190bcr/abl might play a role in the terminal transformation or progression of leukemia.

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