Breast Cancer

, Volume 18, Issue 2, pp 137–140

Mixed epithelial/mesenchymal metaplastic carcinoma (carcinosarcoma) of the breast in BRCA1 carrier

  • Evgeny N. Suspitsin
  • Anna P. Sokolenko
  • Dmitry A. Voskresenskiy
  • Alexandr O. Ivantsov
  • Kseniya V. Shelehova
  • Valery F. Klimashevskiy
  • Dmitry E. Matsko
  • Vladimir F. Semiglazov
  • Evgeny N. Imyanitov
Case Report

Abstract

This case report describes a 35-year-old woman who was diagnosed with mixed epithelial/mesenchymal metaplastic carcinoma (carcinosarcoma) of the breast. Genetic analysis of blood DNA revealed a common founder mutation, BRCA1 5382insC. Examination of microdissected tumor samples determined that both epithelial and mesenchymal components contained deletion of the wild-type BRCA1 allele. This report exemplifies that even very uncommon breast tumor types may develop through biallelic inactivation of BRCA1 gene, that has to be considered in the genetic testing settings.

Keywords

Breast Mixed epithelial/mesenchymal metaplastic carcinoma Carcinosarcoma BRCA1 Loss of heterozygosity Cancer genetics 

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Copyright information

© The Japanese Breast Cancer Society 2009

Authors and Affiliations

  • Evgeny N. Suspitsin
    • 1
  • Anna P. Sokolenko
    • 1
  • Dmitry A. Voskresenskiy
    • 1
  • Alexandr O. Ivantsov
    • 1
  • Kseniya V. Shelehova
    • 1
  • Valery F. Klimashevskiy
    • 1
  • Dmitry E. Matsko
    • 1
  • Vladimir F. Semiglazov
    • 1
  • Evgeny N. Imyanitov
    • 1
  1. 1.Laboratory of Molecular OncologyN.N. Petrov Institute of OncologySt. PetersburgRussia

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