We report an unusual hyperdiploid karyotype characterized by the simultaneous occurrence of tetrasomy 21 and trisomy 8 detected during early blastic evolution of a BCR-ABL-negative chronic myeloproliferative disorder. Blast cells from this patient showed a striking response to all-trans-retinoic acid (ATRA)-induced differentiation as evaluated by CD15 expression following in vitro exposure to this inducer. Our report represents the first description of such a composite karyotype in human hematologic malignancies.

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Volume50, Issue1

September 1995

Pages 49-52

Simultaneous occurrence of tetrasomy 21 and trisomy 8 in a patient with early blastic metamorphosis of chronic myeloproliferative disorder

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Simultaneous occurrence of tetrasomy 21 and trisomy 8 in a patient with early blastic metamorphosis of chronic myeloproliferative disorder

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