Home Neoplasma 2005 Neoplasma Vol.52, p.517-522, 2005

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.52, p.517-522, 2005

Title: The value of dot plot patterns and leukemia-associated phenotypes in AML diagnosis by multiparameter flow cytometry
Author: T., ZELEZNIKOVA ; O., BABUSIKOVA ;

Abstract: The immunophenotypic features in patients with acute myeloid leukemia (AML) were investigated at diagnosis using a wide antibody panel including progenitor-associated, myeloid and lymphoid markers in quadruple combinations. Analyzed were bone marrow samples from 37 adult and pediatric patients for exact identification of AML blasts according their localization on CD45/SSC dot plots and aberrant immunophenotypes in various subtype of AML. We found the localization of AML blasts on CD45/SSC dot plots, which in combination with immunophenotype profile of blasts allow discrimination of several AML subtypes (M0-M2, M3, M4/M5 and other types). In 27/37 AML patients (73%) at least one leukemia-associated phenotype (LAP) was found, two or more aberrancies coexisted in more than a half of them (78%). Asynchronous expression was the most frequent type of LAP (77.8%, 21/27) followed by coexpression of lymphoid-associated antigens, which occurred in 18/27 (66.7%) patients. Presented study showed that leukemic cells of each AML patient had a unique antigenic profile and could be discriminated from their normal counterparts based on typical light scatter profiles and aberrant antigen expression that could further be used for detection of minimal residual disease.

Keywords: AML, multiparameter flow cytometry, leukemia-associated aberrant immunophenotypes
Year: 2005, Volume: 52, Issue: Page From: 517, Page To: 522

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