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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Hematology and cell therapy 38 (1997), S. 247-252 
    ISSN: 1279-8509
    Keywords: Acute myelogenous leukemia ; Clinical trials ; Bone-marrow transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since the early 80s, the EORTC Leukemia Group has included 3947 patients in 8 consecutive phase III studies on acute myelogenous leukemia, with stratification according to the age groups. Some of these patients were included by other cooperative groups (GIMEMA, HOVON), within intergroup studies. The main hypotheses tested by randomization were intensive chemotherapy consolidation, allogeneic and autologous bone marrow transplantation in the younger patients. In patients aged 60 years or more, a wait and see policy followed by a palliative chemotherapy was compared to an immediate conventional induction treatment, mitoxantrone was compared to daunorubicin, and, during remission, a low dose Ara-C maintenance treatment to no maintenance. The main results can be summarized as follows: Allogeneic BMT, and, relatively, autologous BMT do better than intensive chemotherapy consolidation with regards to the disease-free survival, but not for the overall survival after remission. In the elderly, an immediate induction and a low-dose Ara-C maintenance treatment are preferable to the other options tested. Mainly in patients aged more than 45, the supplementary toxicity of more intensive chemotherapy consolidation, with high dose Ara-C, counter balanced the increased anti-leukemic effect. Finally the trials randomizing GM-CSF during induction yielded disappointing results. The EORTC LCG is currently studying the relative value of various intercalating agents during induction, and of the G-CSF as well, and, during remission the autologous peripheral stem cells compared to bone marrow transplantation.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: Key words Multidrug resistance ; Acute myelogenous leukemia ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The clinical significance of the multidrug resistance (MDR 1) gene phenotype was investigated in newly diagnosed AML and was compared with other clinical and biological prognostic factors in patients who received at least one course of induction therapy with intercalating agents and conventional doses of Ara-C. MDR 1 gene was overexpressed in 40% of the 110 cases of AML at presentation, MRP in 15% of the 48 patients tested for both markers. Both gene expressions were closely linked (p=0.008). Except for a lower frequency in the "good risk" cytogenetic group, MDR 1 overexpression was not associated with other prognostic factors. In univariate analysis, MDR 1 overexpression, age over 50 years, and cytogenetic were associated with a higher rate of resistance to induction treatment. The overall survival was shorter in the case of intermediate or poor cytogenetics, high leukocytosis, MDR 1 overexpression, age over 50 years, secondary AML, and poor cytologic differentiation. Using multivariate analysis on 64 patients receiving intensive treatment, MDR 1 overexpression was the first significant prognostic factor for resistance to the first course of induction treatment. Cytogenetic analysis maintained its prognostic value only in MDR 1-negative patients. These data underline the value of MDR 1 gene expression as a powerful prognostic factor in AML for response to the first induction treatment and overall survival, sustaining the use of MDR 1 modulators for firstline therapy in this disease.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 68 (1994), S. 55-60 
    ISSN: 1432-0584
    Keywords: Chronic neutrophilic leukemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Chronic neutrophilic leukemia (CNL) is a very rare entity, which has to be included among the chronic myeloid leukemias. Once an underlying cause of neutrophilia is excluded, the diagnosis of CNL is based on exclusion of chronic granulocytic and other types of chronic myeloid leukemias. The classification proposed by Sheperd et al. has proven to be helpful, but it must be completed by cytogenetic analysis and the search for bcr rearrangement by molecular biology methods, in order to confirm the absence of Philadelphia chromosome and of bcr-abl hybrid gene. We report here four cases of CNL, with confirmed absence of bcr rearrangement in two cases. Two patients died, 12 and 8 years after diagnosis, the second one following transformation into myelofibrosis with myeloid metaplasia. The other two died of acute myelogenous leukemia, the first one, 25 years after diagnosis of CNL, following a 3-year phase of acceleration. The last patient presented combined features of CNL and refractory anemia with excess of blasts, and was characterized by both progressive leukocytosis and severe thrombocytopenia; acute transformation into acute myelogenous leukemia occurred 6 months after diagnosis and death 1 month later. Among the 30 cases reported so far, plus the four presented here, combined myelodysplastic features were observed in five cases and transformation into acute myelogenous leukemia in six. Chronic neutrophilic leukemias should be reported regularity, in view of the uncertain and low frequency of this hematological disease.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 76 (1998), S. 91-92 
    ISSN: 1432-0584
    Keywords: Key words Fournier's gangrene ; Acute myelogenous leukemia ; All-trans-Retinoid acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Fournier's gangrene is described as a fulminant necrotizing fasciitis of the scrotum and penis. Few cases have been reported in the context of acute leukemia. We describe a case, complicating the induction treatment of an acute promyelocytic leukemia with all-trans–retinoic acid and chemotherapy. The evolution was favorable, following surgical excision and broad-spectrum antibiotic therapy. The respective roles of all-trans–retinoic acid and granulocytopenia are discussed. This devastating and life-threatening infection must be kept in mind for early clinical, bacteriological, and radiological diagnosis and surgical management.
    Type of Medium: Electronic Resource
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