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Medical Oncology

, 30:538 | Cite as

Detection and quantification of CSF malignant cells by the CellSearch® technology in patients with melanoma leptomeningeal metastasis

  • Emilie Le Rhun
  • Qian Tu
  • Marcelo De Carvalho Bittencourt
  • Isabelle Farre
  • Laurent Mortier
  • Huili Cai
  • Chantal Kohler
  • Gilbert C. Faure
Short Communication

Abstract

Melanoma is the most frequent solid tumor associated with leptomeningeal metastasis (LM). The usual diagnostic tools, that is, cytomorphological assessment of cerebro-spinal fluid (CSF) and gadolinium-enhanced MRI of the entire neuraxis both lack effectiveness. The CellSearch® Veridex technology for the detection of circulating tumor cells (CTC) in blood was designed for the follow-up and prognosis of breast, prostate, colorectal, and lung cancer, which express EpCAM markers. We have previously adapted this technology to detect malignant cells in the CSF of breast cancer LM. Our objective here was to check if this technology would also allow the detection and the enumeration of CTC in the CSF of melanoma patients presenting with LM although melanoma does not express EpCAM markers. On the occasion of the intrathecal treatment of LM in 2 melanoma patients, 5 mL of CSF and 7.5 mL of blood were collected on CellSave® Preservative Tubes and analyzed within 3 days after CSF sampling using a melanoma-dedicated kit. The CellSearch® Veridex technology was then adapted to direct enrichment, enumeration, and visualization of melanoma cells in the CSF. CD146+, HMW-MAA+, CD34−, and CD45− cells with typical morphology could be observed and enumerated sequentially with reproducible results, corresponding to CSF melanoma cells (CSFMC). In contrast to the current gold standard cytomorphological analysis, this new approach allowed a precise quantification of CSFMC in all samples concomitantly analyzed. This methodology, established on a limited volume of sample and allowing delayed processing, could prove of great interest in the diagnosis and follow-up of melanoma patients with LM.

Keywords

Leptomeningeal metastasis Neoplastic meningitis CellSearch® technology Immunomagnetic enrichment CSF cytology Melanoma 

Notes

Acknowledgments

This work has been supported by EA RHEM4369, Université de Lorraine.

QT and HC are supported by Chinese Scientific Council.

This work was not funded by the manufacturer or distributor of Cellsearch technology®.

Conflict of interest

None declared.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Emilie Le Rhun
    • 1
    • 2
  • Qian Tu
    • 3
    • 4
  • Marcelo De Carvalho Bittencourt
    • 3
    • 4
  • Isabelle Farre
    • 5
  • Laurent Mortier
    • 6
    • 7
  • Huili Cai
    • 3
    • 4
  • Chantal Kohler
    • 3
    • 4
  • Gilbert C. Faure
    • 3
    • 4
  1. 1.Neurology, Breast Unit, Department of Medical OncologyOscar Lambret CenterLille CedexFrance
  2. 2.Neuro-oncology, Hopital Roger SalengroCentre Hospitalier et UniversitaireLille CedexFrance
  3. 3.CHU Nancy, Nancytomique, Laboratoire d’Immunologie, Pôle LaboratoiresVandoeuvre lès NancyFrance
  4. 4.Faculté de MédecineUniversité Henri Poincaré, EA4369 RHEMVandoeuvre lès NancyFrance
  5. 5.Department of PathologyOscar Lambret CenterLille CedexFrance
  6. 6.Department of Dermatology, Huriez HospitalRegional and University HospitalLilleFrance
  7. 7.University of Lille North of FranceLilleFrance

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