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Chromosomal morphological and clinical correlations in blastic crisis of chronic myeloid leukemia 69 cases


, : Chromosomal morphological and clinical correlations in blastic crisis of chronic myeloid leukemia 69 cases. Scandinavian Journal of Haematology 28(2): 103-117

The karyotypic pattern in 69 patients with Ph1-positive chronic myeloid leukemia (CML) was investigated during the blastic phase (BC) and correlated with survival and certain parameters of potential prognostic significance, including blast morphology, basophilia and thrombocytopenia. There was no difference in median survival in BC between patients with and without aberrations in addition to the Ph1. Nor were there any differences in this respect among patients with the specific aberrations +Ph1, +8, iso(17q), or other abnormalities. There was no correlation between the incidence of thrombocytopenia and any particular karyotypic change. The incidence of basophilia was a characteristic feature for patients with an iso(17q). The survival time in BC was considerably longer in patients with a lymphoid morphology of the blastic cells compared to the myeloid varieties, and within the myeloid varieties the survival in BC was longer in patients with granular differentiated blasts than in those with granular atypical blast cells. No obvious correlation was apparent between blast morphology and karyotypic pattern. However, a pattern was discernible regarding survival and certain chromosomal changes within some morphologic groups: in patients with granular differentiated and lymphoid morphology, the median survival in BC was considerably longer when the bone marow cells had a Ph1 as the sole abnormality compared to patients who had additional aberrations.

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