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- W4385514600 abstract "Diagnostic criteria for juvenile myelomonocytic leukemia (JMML) are currently well defined, however in some patients diagnosis still remains a challenge. Flow cytometry is a well-established tool for diagnosis and follow-up of hematological malignancies, nevertheless it is not routinely used for JMML diagnosis. Herewith, we characterized the CD34+ hematopoietic precursor cells collected from 31 children with JMML using a combination of standardized EuroFlow antibody panels to assess the ability to discriminate JMML cells from normal/reactive bone marrow cell as controls (n=29) or from cells of children with other hematological diseases mimicking JMML (n=9). CD34+ precursors in JMML showed markedly reduced B and erythroid-committed precursors compared to controls, whereas monocytic and CD7+ lymphoid precursors were significantly expanded. Moreover, aberrant immunophenotypes were consistently present in CD34+ precursors in JMML, while they were virtually absent in controls. Multivariate logistic regression analysis showed that combined assessment of the number of CD34+CD7+ lymphoid precursors and CD34+ aberrant precursors or erythroid precursors had a great potential in discriminating JMMLs vs controls. Importantly our scoring model allowed highly efficient discrimination of truly JMML vs patients with JMML-like diseases. In conclusion, we show for the first time that CD34+ precursors from JMML patients display a unique immunophenotypic profile which might contribute to a fast and accurate diagnosis of JMML worldwide by applying an easy to standardize single 8-color antibody combination." @default.
- W4385514600 created "2023-08-04" @default.
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- W4385514600 date "2023-08-03" @default.
- W4385514600 modified "2023-10-16" @default.
- W4385514600 title "Phenotypic profiling of CD34+ cells by advanced flow cytometry improves diagnosis of Juvenile Myelomonocytic Leukemia" @default.
- W4385514600 doi "https://doi.org/10.3324/haematol.2023.282805" @default.
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