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Sökning: WFRF:(Invernizzi Rosangela)

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1.
  • Jädersten, Martin, et al. (författare)
  • Erythropoietin and granulocyte-colony stimulating factor treatment associated with improved survival in myelodysplastic syndrome
  • 2008
  • Ingår i: Journal of Clinical Oncology. - New York, N.Y. : Grune & Stratton. - 0732-183X .- 1527-7755. ; 26:21, s. 3607-3613
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose To assess the effect of erythropoietin (EPO) plus granulocyte-colony stimulating factor (G-CSF) treatment on survival and leukemic transformation in myelodysplastic syndrome (MDS).Patients and Methods We compared the long-term outcome of patients with MDS treated with EPO plus G-CSF (n = 121) with untreated patients (n = 237) with MDS using multivariate Cox regression with delayed entry, for the first time adjusting for all major prognostic variables (WHO classification, karyotype, cytopenias, level of transfusion-need, age, and sex).Results The erythroid response rate to EPO plus G-CSF was 39%, and the median response duration 23 months (range, 3 to 116+). In the multivariate analysis, treatment was associated with improved overall survival (hazard ratio, 0.61; 95% CI, 0.44 to 0.83; P = .002). Interestingly, this positive association was primarily observed in patients requiring fewer than 2 units of RBCs per month. Treatment was not linked to the rate of acute myeloid leukemia in any defined subgroup, including patients with an increase of marrow blasts or an unfavorable karyotype.Conclusion The inherent risk of leukemic evolution in MDS makes the current investigation highly relevant, in light of the recent reports of potential negative effects of EPO treatment on outcome in patients with cancer. We conclude that treatment of anemia in MDS with EPO plus G-CSF may have a positive impact on outcome in patients with no or low transfusion need, while not affecting the risk of leukemic transformation.
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  • Malcovati, Luca, et al. (författare)
  • SF3B1 mutation identifies a distinct subset of myelodysplastic syndrome with ring sideroblasts
  • 2015
  • Ingår i: Blood. - : American Society of Hematology. - 0006-4971 .- 1528-0020. ; 126:2, s. 233-241
  • Tidskriftsartikel (refereegranskat)abstract
    • Refractory anemia with ring sideroblasts (RARS) is a myelodysplastic syndrome (MDS) characterized by isolated erythroid dysplasia and 15% or more bone marrow ring sideroblasts. Ring sideroblasts are found also in other MDS subtypes, such as refractory cytopenia with multilineage dysplasia and ring sideroblasts (RCMD-RS). A high prevalence of somatic mutations of SF3B1 was reported in these conditions. To identify mutation patterns that affect disease phenotype and clinical outcome, we performed a comprehensive mutation analysis in 293 patients with myeloid neoplasm and 1% or more ring sideroblasts. SF3B1 mutations were detected in 129 of 159 cases (81%) of RARS or RCMD-RS. Among other patients with ring sideroblasts, lower prevalence of SF3B1 mutations and higher prevalence of mutations in other splicing factor genes were observed (P < .001). In multivariable analyses, patients with SF3B1 mutations showed significantly better overall survival (hazard ratio [HR], .37; P = .003) and lower cumulative incidence of disease progression (HR = 0.31; P = .018) compared with SF3B1-unmutated cases. The independent prognostic value of SF3B1 mutation was retained in MDS without excess blasts, as well as in sideroblastic categories (RARS and RCMD-RS). Among SF3B1-mutated patients, coexisting mutations in DNA methylation genes were associated with multilineage dysplasia (P = .015) but had no effect on clinical outcome. TP53 mutations were frequently detected in patients without SF3B1 mutation, and were associated with poor outcome. Thus, SF3B1 mutation identifies a distinct MDS subtype that is unlikely to develop detrimental subclonal mutations and is characterized by indolent clinical course and favorable outcome.
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