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Leuk Res. 2010 Aug;34(8):969-73. doi: 10.1016/j.leukres.2010.02.033. Epub 2010 Mar 23.

Spectrum of mutations in RARS-T patients includes TET2 and ASXL1 mutations.

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  • 1Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.

Abstract

While a majority of patients with refractory anemia with ring sideroblasts and thrombocytosis harbor JAK2V617F and rarely MPLW515L, JAK2/MPL-negative cases constitute a diagnostic problem. 23 RARS-T cases were investigated applying immunohistochemical phospho-STAT5, sequencing and SNP-A-based karyotyping. Based on the association of TET2/ASXL1 mutations with MDS/MPN we studied molecular pattern of these genes. Two patients harbored ASXL1 and another 2 TET2 mutations. Phospho-STAT5 activation was present in one mutated TET2 and ASXL1 case. JAK2V617F/MPLW515L mutations were absent in TET2/ASXL1 mutants, indicating that similar clinical phenotype can be produced by various MPN-associated mutations and that additional unifying lesions may be present in RARS-T.

Copyright (c) 2010 Elsevier Ltd. All rights reserved.

PMID:
20334914
[PubMed - indexed for MEDLINE]
PMCID:
PMC2953471
Free PMC Article

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