p210阳性且有t(1;16)异位但无t(9;22)异位的急性单核细胞白血病的研究.pdf

Min et al. Journal of Hematology Oncology 2011, 4:45 /content/4/1/45 JOURNAL OF HEMATOLOGY ONCOLOGY CASE REPORT Open Access De novo acute megakaryoblastic leukemia with p210 BCR/ABL and t(1;16) translocation but not t(9;22) Ph chromosome * Xiao Min, Zhang Na, Liu Yanan and Li Chunrui Abstract Acute megakaryoblastic leukemia (AMKL) is a type of acute myeloid leukemia (AML), in which majority of the blasts are megakaryoblastic. De novo AMKL in adulthood is rare, and carries very poor prognosis. We here report a 45- year-old woman with de novo AMKL with BCR/ABL rearrangement and der(16)t(1;16)(q21;q23) translocation but negative for t(9;22) Ph chromosome. Upon induction chemotherapy consisting of homoharringtonine, cytarabine and daunorubicin, the patient achieved partial hematological remission. The patient was then switched to imatinib plus one cycle of CAG regimen (low-dose cytarabine and aclarubicin in combination with granulocyte colony- stimulating factor), and achieved complete remission (CR). The disease recurred after 40 days and the patient eventually died of infection. To the best of our knowledge, this is the first report of de novo AMKL with p210 BCR/ ABL and der(16)t(1;16)(q21;q23) translocation but not t(9;22) Ph chromosome. Keywords: Imatinib, Acute megakaryocytic leukemia, p210 BCR/ABL Background regimen (low-dose cytarabine and aclarubicin in combina- Acute megakaryoblastic leukemia (AMKL), also known as tion with granulocyte colony-stimulating factor) [10], and M7 unde