Virchows Archiv

, Volume 461, Issue 6, pp 647–653 | Cite as

BMI1 expression identifies subtypes of Merkel cell carcinoma

  • Maria Kouzmina
  • Valtteri Häyry
  • Junnu Leikola
  • Caj Haglund
  • Tom Böhling
  • Virve Koljonen
  • Jaana Hagström
Original Article

Abstract

Merkel cell carcinoma (MCC) is a rare cutaneous neuroendocrine carcinoma. The aims of this study were to investigate the expression of the transcription factors B-lymphoma Moloney murine leukaemia virus insertion (BMI1), myelocytomatosis viral oncogene homologue (c-Myc) and Snail in MCC tumour specimens and to examine the relationship of these markers to Merkel cell polyoma virus (MCV). The study comprised of 133 patients with primary MCC. The expression of BMI1, Snail and c-Myc protein was assessed by immunohistochemistry and compared with clinical parameters, MCV status and patient survival. The presence of MCV was inversely correlated with the expression of BMI1 protein. Tumours expressing BMI1 protein more often presented with lymph node metastases. Snail protein expression was decreased in cases with metastatic dissemination. This study identified two subgroups of MCC: tumours expressing BMI1 but negative for MCV DNA and tumours negative for BMI1 expression but positive for MCV. Importantly, BMI1-positive cases often presented with lymph node metastases. Combined, these results suggest that subtypes of this malignancy exist.

Keywords

Merkel cell carcinoma BMI1 Merkel cell polyoma virus 

Abbreviations

AJCC

American Joint Committee on Cancer

BMI1

B-lymphoma Moloney murine leukaemia virus insertion

CK-20

Cytokeratin-20

c-Myc

Myelocytomatosis viral oncogene homologue

DNA

Deoxyribonucleic acid

LT3

Large T 3

MCC

Merkel cell carcinoma

MCV

Merkel cell polyoma virus

PCR

Polymerase chain reaction

TTF-1

Thyroid transcription factor-1

UVB

Ultraviolet B

Notes

Acknowledgments

The authors thank Päivi Peltokangas, Tuire Koski and Elina Aspiala for excellent technical assistance. Harri Sihto is thanked for MCV analysis and Timo Pessi for assistance with statistical analysis. Funding of this study was from departmental sources only.

Conflict of interest

Each author declares no financial conflicts of interest with regard to the data presented in this manuscript.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Maria Kouzmina
    • 1
    • 6
  • Valtteri Häyry
    • 2
    • 6
  • Junnu Leikola
    • 3
  • Caj Haglund
    • 4
  • Tom Böhling
    • 5
  • Virve Koljonen
    • 3
    • 6
  • Jaana Hagström
    • 7
    • 8
  1. 1.Department of Oral and Maxillofacial SurgeryHelsinki University Central HospitalHelsinkiFinland
  2. 2.Department of Otorhinolaryngology—Head and Neck SurgeryHelsinki University Central HospitalHelsinkiFinland
  3. 3.Department of Plastic SurgeryHelsinki University Central HospitalHelsinkiFinland
  4. 4.Department of Gastroenterological SurgeryHelsinki University Central HospitalHelsinkiFinland
  5. 5.Department of PathologyHelsinki University and HUSLABHelsinkiFinland
  6. 6.Institute of Clinical MedicineHelsinki UniversityHelsinkiFinland
  7. 7.Department of Pathology/Haartman Institute and HUSLABHelsinki University Central HospitalHelsinkiFinland
  8. 8.Department of Oral PathologyUniversity of HelsinkiHelsinkiFinland

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