Flow Cytometric Evaluation of Traditional and Novel Surface Markers for the Diagnosis of Plasma Cell Dyscrasias

Dominik F. Draxler, Lisa M. Wutzlhofer, Georg Slavka, Wolfgang Hübl, Heinz Ludwig, Martin Schreder, John Reynolds, Martin Willheim

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Increasing interest has been expressed for flow cytometric immunophenotyping for diagnosis and monitoring in plasma cell dyscrasias over the last decades. The aim of this investigation was to compare the expression strength of various cell surface markers used traditionally or currently under investigation on normal and abnormal PC populations. We enrolled 295 consecutive patients undergoing bone marrow aspiration in the workup of monoclonal gammopathies, selecting 54 normal and 241 abnormal PC populations via flow cytometry to characterize the expression of CD45, CD38, CD138, CD19, CD56, CD20, CD27, CD28, CD81, CD117 and CD200 on the cell surface of PCs. We observed significant differences in the expression strength of all assessed markers between normal and abnormal PC populations in all markers except for CD20. While none of them was conclusive on its own, the combination of CD81 positivity and CD117 negativity was present in 98.1% of normal PC populations tested. In contrast, particularly CD117 positivity, but also CD81 negativity was indicative of an abnormal PC phenotype. Our results highlight the descriptive value of CD81 and CD117 for the allocation of bone marrow PCs to a normal or abnormal phenotype.

Original languageEnglish
Pages (from-to)673-682
Number of pages10
JournalIndian Journal of Hematology and Blood Transfusion
Volume35
Issue number4
DOIs
Publication statusPublished - Oct 2019

Keywords

  • FACS
  • Flow cytometry
  • Multiple myeloma
  • Plasma cell dyscrasias
  • Plasma cells

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