Expression of tumor-associated antigens in breast cancer subtypes

Giuseppe Curigliano, Vincenzo Bagnardi, Mariacristina Ghioni, Jamila Louahed, Vincent Brichard, Frederic F. Lehmann, Antonio Marra, Dario Trapani, Carmen Criscitiello, Giuseppe Viale

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives: Tumor-associated antigens (TAAs) are frequently overexpressed in several cancer types. The aim of this study was to investigate the expression of TAAs in breast cancer. Material and methods: A total of 250 selected invasive breast cancers including 50 estrogen receptor (ER)-positive (Luminal B like), 50 triple-negative (TN), 50 ER-positive lobular type, 50 ER- and progesterone receptor (PgR)-positive (Luminal A like) and 50 cerbB2-positive breast cancers, were assessed for New York esophageal squamous cell carcinoma-1 (NY-ESO-1), Wilms tumor antigen (WT-1) and PReferentially expressed Antigen of MElanoma (PRAME) antigen expression by immunohistochemistry (IHC). Results: A significantly higher expression of cancer testis (CT)-antigens NY-ESO-1 and WT-1 antigen was detected in TN breast cancers compared with ER-positive tumors. NY-ESO-1 overexpression (score 2 + and 3+) assessed by monoclonal and polyclonal antibodies was detected in 9 (18%) TN cancers as compared to 2 (4%) ER-positive tumors (p = 0.002). WT1 over-expression (score 2 + and 3+) was confirmed in 27 (54%) TN tumor samples as compared to 6 (12%) ER-positive (p < 0.0001). PRAME over-expression (score 2 + and 3+) was detected in 8 (16%) HER2 positive tumor samples as compared to no TN and ER-positive cancers (p = 0.0021). Conclusions: NY-ESO-1 and WT1 antigens are overexpressed in TN breast cancers. Because of the limited therapeutic options for this patient subgroup, CT antigen-based vaccines might prove to be useful for patients with this phenotype of breast cancer.

Original languageEnglish
Pages (from-to)202-209
Number of pages8
JournalBreast
Volume49
DOIs
Publication statusPublished - Feb 2020

Keywords

  • Breast cancer
  • Cancer testis antigens
  • Immunotherapy
  • NY-ESO-1
  • PRAME
  • Tumor-associated antigens
  • WT1

ASJC Scopus subject areas

  • Surgery

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