Volume 184, Issue 4 pp. 625-633
Research Paper

CD13 expression in B cell malignancies is a hallmark of plasmacytic differentiation

Anna Raimbault

Anna Raimbault

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Sigrid Machherndl-Spandl

Sigrid Machherndl-Spandl

Department of Haematology, Internal Oncology and Stem Cell Transplantation, Ordensklinikum Linz Elisabethinen Hospital, Linz, Austria

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Raphaël Itzykson

Raphaël Itzykson

Service d'Hématologie Clinique, Hôpitaux Universitaires Saint Louis, Lariboisière, Fernand Widal, Université Paris Diderot, Paris, France

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Sylvain Clauser

Sylvain Clauser

Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France

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Nicolas Chapuis

Nicolas Chapuis

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Stéphanie Mathis

Stéphanie Mathis

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

Service d'Hématologie Clinique, Hôpitaux Universitaires Saint Louis, Lariboisière, Fernand Widal, Université Paris Diderot, Paris, France

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Jeroen Lauf

Jeroen Lauf

Department of Haematology, Internal Oncology and Stem Cell Transplantation, Ordensklinikum Linz Elisabethinen Hospital, Linz, Austria

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Anne-Sophie Alary

Anne-Sophie Alary

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Barbara Burroni

Barbara Burroni

Service d'Anatomopathologie, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Olivier Kosmider

Olivier Kosmider

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Michaela Fontenay

Michaela Fontenay

Service d'Hématologie Biologique, Hôpitaux Universitaires Paris Centre, Université Paris Descartes, Paris, France

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Marie C. Béné

Marie C. Béné

Service d'Hématologie Biologique, CHU et Université de Nantes, Nantes, France

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Françoise Durrieu

Françoise Durrieu

Hématologie Biologique, Institut Bergonié, Bordeaux, France

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Peter Bettelheim

Peter Bettelheim

Department of Haematology, Internal Oncology and Stem Cell Transplantation, Ordensklinikum Linz Elisabethinen Hospital, Linz, Austria

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Valérie Bardet

Corresponding Author

Valérie Bardet

Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France

Correspondence: Valérie Bardet, Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Hôpital Ambroise Paré, 9 avenue Charles de Gaulle, 92100 Boulogne, France.

E-mail: [email protected]

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First published: 10 September 2018
Citations: 16

Summary

The diagnosis of Waldenström Macroglobulinaemia (WM)/lymphoplasmacytic lymphoma (LPL) remains one of exclusion because other B-cell lymphoproliferative disorders (B-LPD), such as marginal zone lymphoma (MZL), can fulfil similar criteria, including MYD88 L265P mutation. It has been suggested that expression of the myeloid marker CD13 (also termed ANPEP) is more frequent in LPL than in other B-LPD and has also been described on normal and malignant plasma cells. Here, CD13 expression was tested in a cohort of 1037 B-LPD patients from 3 centres by flow cytometry. The percentage of CD13-expressing cells was found to be variable among B-LPD but significantly higher in WM/LPL (median 31% vs. 0% in non-WM/LPL, P < 0·001). In multivariate linear regression, CD13 expression remained significantly associated with a diagnosis of WM/LPL (P < 0·001). A cut-off value of 2% of CD19+ cells co-expressing CD13 yielded the best diagnostic performance for WM/LPL assertion. This was further improved by association with the presence or absence of IgM paraprotein. Finally, given that previously published transcriptomic data revealed no difference in CD13 (also termed ANPEP) mRNA between normal and pathological B-cells, the hypothesis of some post-transcriptional regulation must be favoured. These results suggest that testing for CD13 expression in routine flow cytometry panels could help to discriminate WM/LPL from other B-LPD.

Conflict of interest

The authors declare no conflict of interest.

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