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Cancer Genet Cytogenet. 2000 Feb;117(1):82-3.

Acute promyelocytic leukemia relapsing into FAB-M2 acute myeloid leukemia with trisomy 8.

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First Department of Medicine, University of Athens, Greece.


Acute promyelocytic leukemia was diagnosed in a 48-year-old man; the karyotype was normal, whereas reverse transcriptase polymerase chain reaction (RT-PCR) analysis identified PML/RAR alpha chimeric transcripts of the bcr3 type. Rather unexpectedly, the patient did not respond to alltrans retinoic acid administration; he attained complete remission with conventional chemotherapy and became PML/RAR alpha negative. Two years later, while PML/RAR alpha negative on RT-PCR, he presented with thrombocytopenia. Bone marrow examination was compatible with myelodysplasia of the RAEB type; the karyotype was normal. Then, after 10 months, he developed overt acute myeloid leukemia with PML/RAR alpha negative, French-American-British M2 blasts; karyotypic analysis revealed mosaicism for trisomy 8.

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