Abstract
Upon analyzing 696 childhood B-cell precursor acute lymphoblastic leukemia (BCP-ALL) cases, we identified the characteristics of CD66c expression. In addition to the confirmation of strong correlation with BCR-ABL positivity and hyperdiploid, we further observed that CD66c is frequently expressed in CRLF2-positive (11/15, p<0.01 against chimeric gene-negative) as well as hypodiploid cases (3/4), whereas it is never expressed in ETV6-RUNX1, MLL-AF4, MLL-AF9, MLL-ENL, and E2A-PBX1-positive cases. Although the expression of CD66c itself is not directly linked to the prognosis, the accompanying genetic abnormalities are important prognostic factors for BCP-ALL, indicating the importance of CD66c expression in the initial diagnosis of BCP-ALL.
Keywords:
Acute lymphoblastic leukemia; CD66c; CRLF2, Flow cytometry; Genetic abnormality.
Copyright © 2013 Elsevier Ltd. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Antigens, CD / metabolism*
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Cell Adhesion Molecules / metabolism*
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Child
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Child, Preschool
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Core Binding Factor Alpha 2 Subunit / genetics
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Female
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Flow Cytometry
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Fusion Proteins, bcr-abl / genetics
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GPI-Linked Proteins / metabolism
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Gene Expression Regulation, Neoplastic
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Homeodomain Proteins / genetics
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Humans
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Infant
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Infant, Newborn
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Male
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Myeloid-Lymphoid Leukemia Protein / genetics
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Oncogene Proteins, Fusion / genetics*
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / genetics
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / metabolism*
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / pathology
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Prognosis
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Receptors, Cytokine / metabolism*
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Reverse Transcriptase Polymerase Chain Reaction
Substances
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Antigens, CD
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CEACAM6 protein, human
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CRLF2 protein, human
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Cell Adhesion Molecules
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Core Binding Factor Alpha 2 Subunit
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GPI-Linked Proteins
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Homeodomain Proteins
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MLL-AF4 fusion protein, human
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MLL-AF9 fusion protein, human
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MLL-ENL oncoprotein, human
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Oncogene Proteins, Fusion
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Receptors, Cytokine
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TEL-AML1 fusion protein
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E2A-Pbx1 fusion protein
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Myeloid-Lymphoid Leukemia Protein
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Fusion Proteins, bcr-abl