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Archives of Dermatological Research

, Volume 308, Issue 6, pp 449–454 | Cite as

SATB2 is expressed in Merkel cell carcinoma

  • Mari Fukuhara
  • Margrét Agnarsdóttir
  • Per-Henrik Edqvist
  • Anna Coter
  • Fredrik Ponten
Concise Communication

Abstract

Merkel cell carcinoma (MCC) is a rare aggressive skin cancer with neuroendocrine differentiation. With immunohistochemistry, the tumor cells stain for both neuroendocrine (i.e., synaptophysin and chromogranin A) and epithelial markers. The epithelial marker cytokeratin 20 (CK20) stains positive with immunohistochemistry in a vast majority of MCCs. The expression of the special AT-rich sequence-binding protein (SATB2) was analyzed in MCC (n = 20) together with other forms of skin cancer and neuroendocrine tumors (n = 51) using immunohistochemistry. The results were compared to the expression of CK20, synaptophysin, and chromogranin A. The majority of the MCCs stained positive for synaptophysin and chromogranin A (95 vs 80 % respectively), and 75 % of the MCCs showed cytoplasmic positivity for CK20 and nuclear positivity for SATB2, with two discordant cases lacking expression of one of these markers. We conclude that immunohistochemistry for SATB2 can be used as an additional marker with similar sensitivity and specificity as CK20 for the diagnosis of Merkel cell carcinoma, suggesting a clinical utility in difficult cases where MCC is suspected.

Keywords

Merkel cell carcinoma CK20 SATB2 Tissue microarray Immunohistochemistry 

Notes

Acknowledgments

This study was supported by grants from the Knut and Alice Wallenberg Foundation and from the local Uppsala University Hospital “ALF” funding.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Mari Fukuhara
    • 1
  • Margrét Agnarsdóttir
    • 1
  • Per-Henrik Edqvist
    • 1
  • Anna Coter
    • 1
  • Fredrik Ponten
    • 1
  1. 1.Department of Immunology, Genetics and Pathology, Science for Life LaboratoryUppsala UniversityUppsalaSweden

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