Utility of a column-free cell sorting system for separation of plasma cells in multiple myeloma FISH testing in clinical laboratories

Shashirekha Shetty, Andrew Wilson, Judy Gray, Marion Siady, Jeff Poarch, Mohamed E. Salama, Kalyan C. Mallempati, Brandon Chandler

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Targeted FISH analysis is an essential component of the management of plasma cell myeloma for identification of cytogenetic abnormalities. The purpose of this study was to evaluate the column-free method, RoboSep® (RS), for sorting CD138-expressing cells in bone marrow aspirates. Comparative analysis of columnbased and RS methodologies was carried out on 54 paired bone marrow aspirate validation samples from patients undergoing work-up for plasma cell dyscrasia. Abnormalities detected by FISH analysis using an IGHCCND1 probe set were seen in 54% with RS, and 44% with column-based. We found a statistically significant difference between the yield of abnormalities detected in paired positive cases (p = 0.0001). An additional 183 consecutive post-validation samples sorted by RS showed recurrent genetic abnormalities in 85/120 (71%) of successfully sorted samples with ≥ 1% plasma cells but in none of 63 samples in which FISH analysis was completed on samples that could not be sorted due to insufficient plasma cells upon cell sorting. The column-free method successfully sorted PC, when present in ≥ 1% of cells, for detection of abnormalities by FISH. Furthermore, our data suggest that FISH analysis should not be performed on samples with an inadequate yield at the cell selection step.

Original languageEnglish (US)
Pages (from-to)274-281
Number of pages8
JournalInternational journal of hematology
Volume95
Issue number3
DOIs
StatePublished - Mar 1 2012

Keywords

  • Cell separation
  • Cell sorting
  • FISH
  • Multiple myeloma

ASJC Scopus subject areas

  • Hematology

Fingerprint Dive into the research topics of 'Utility of a column-free cell sorting system for separation of plasma cells in multiple myeloma FISH testing in clinical laboratories'. Together they form a unique fingerprint.

  • Cite this