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Expression of the immunoglobulin superfamily cell membrane adhesion molecule Cd146 in acute leukemia
Author(s) -
Cavazzini Francesco,
Campioni Diana,
Ferrari Luisa,
Buldini Barbara,
Bardi Maria Antonella,
Michielotto Barbara,
Lazzari Maria Cristina,
Ongari Manuele,
Dabusti Melissa,
Daghia Giulia,
Sofritti Olga,
Basso Giuseppe,
Lanza Francesco,
Cuneo Antonio
Publication year - 2016
Publication title -
cytometry part b: clinical cytometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 61
eISSN - 1552-4957
pISSN - 1552-4949
DOI - 10.1002/cyto.b.21267
Subject(s) - cd146 , myeloid leukemia , immunophenotyping , immunoglobulin superfamily , cell adhesion molecule , leukemia , antibody , immunology , medicine , flow cytometry , microbiology and biotechnology , pathology , biology , cd34 , stem cell
Background The expression of the immunoglobulin superfamily cell membrane adhesion molecule CD146 has been reported on several normal and pathological cell types in human. The aim of this study was to investigate CD146 expression in acute leukemia using a multiparametric cytofluorimetric approach. Methods Cytofluorimetric and cytogenetic studies were performed on peripheral blood and bone marrow samples from 162 patients with acute myeloid leukemia (AML, n = 121) and acute lymphoblastic leukemia (ALL, n = 41). ALL patients were subdivided in B‐ALL ( n = 38) and T‐ALL ( n = 3). Adult ( n = 18) and pediatric ( n = 20) B‐ALL were considered as a whole group. Results Four out of 121 (3.3%) AML cases, 14/38 (36.8%) B‐ALL, and 2/3 (66.6%) T‐ALL expressed CD146 on 12–98% of blasts ( p < 0.001). CD146 expression was not observed in 10 healthy controls. Among B‐ALL CD146‐positive cases, 78.6% were associated with a “common”/BII‐ALL and 21.4% with a pre‐B/BIII‐ALL immunophenotype while pro‐B/BI‐ALL and mature‐B/BIV‐ALL cases were CD146‐negative. Statistical analysis showed CD146 expression strongly associated with Ph+ positivity in B‐ALL with the highest percentage of CD146‐positive blasts in all Ph‐positive B‐ALL cases (84 ± 22% Ph‐positive B‐ALL SD vs. 40 ± 24% SD in Ph‐negative B‐ALL; p < 0,001). Conclusion In our series, CD146 was expressed in all cases of Ph‐positive B‐ALL and in the vast majority of T‐ALL, whereas it was rarely expressed by AML blasts. We suggest that CD146 may be considered as an additional marker for acute lymphoblastic leukemia diagnosis and monitoring of minimal residual disease in those cases which are CD146‐positive at diagnosis. © 2015 International Clinical Cytometry Society