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  • 1
    ISSN: 1432-0584
    Keywords: Multiple myeloma ; Plasma cell leukemia ; Cytogenetics ; Cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cytogenetic studies in patients with multiple myeloma (MM) and plasma cell leukemia (PCL) have in general been largely unsuccessful. The investigation of mitoses of nonmalignant hematopoietic precursor cells, rather than mitoses of malignant plasma cells might account for the low percentage of pathological genetic findings. We investigated bone marrow (BM) cells of 51 patients both cytogenetically and cytologically. In patients with a normal karyotype (n=39) nearly all mitoses examined cytologically (107/117) derived from granulopoietic or erythropoietic cell lineages. In contrast, 20/27 metaphases in patients with a pathological karyotype (n=12) were found to be plasma cell mitoses. These findings may explain the low rate of chromosomal rearrangements in MM and may suggest that the real abnormality rate is considerably higher.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: Ph1+-ALL ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Between 1983 and 1991 the Philadelphia chromosome (Ph1) was found in bone marrow and/or peripheral blood cells of 25 adult patients with acute lymphoblastic leukemia (ALL). The Ph1 as sole anomaly was seen in 13 patients, while six patients had additional structural and another six structural and numerical aberrations. Most patients (23/25) received combination chemotherapy according to the BMFT protocols 1/81, 2/84, 3/87, and 4/89. For 25 evaluable patients two early deaths, two treatment failures, two partial remissions (PR), and 19 complete remissions (CR) after phase 1 or 2 of the induction regimen were recorded. Two of these 19 patients who achieved CR are presently disease free, whereas 17 have relapsed after a median duration of remission of 9 months. Actuarial median survival for all patients was 13 months. The probability of continuous complete remission (CCR) after 39 months, as well as that of survival after 40 months, is only 6%. Our results confirm that the presence of the Ph1 is associated with a poor prognosis in adult-ALL patients. Therefore, whenever first CR is obtained and an HLA-identical donor is available, allogeneic bone marrow transplantation (BMT) should be performed at once, the more so, since transplantation in second CR seems to offer no cure. Future studies will have to show whether an intensified cytotoxic therapy can improve the prognosis of Ph1+-ALL.
    Type of Medium: Electronic Resource
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