The clinical significance of MAGEA3 expression in pancreatic cancer

Joseph Kim, Howard A. Reber, Oscar J. Hines, Kevork K. Kazanjian, Andy Tran, Xing Ye, Farin F. Amersi, Steve R. Martinez, Sarah M. Dry, Anton J. Bilchik, Dave S B Hoon

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

The MAGEA gene family that encodes cancer testis antigens is differentially expressed in many cancers. Though MAGEA3 expression has been detected in gastrointestinal malignancies, its role in pancreatic ductal adenocarcinoma (PDAC) has not been well established. We assessed 57 patients who underwent intent-to-cure surgery for PDAC. Total RNA from paraffin-embedded pancreatic tumors was extracted and assessed for MAGEA3 gene expression by an optimized probe-based quantitative real-time RT-PCR (qRT) assay. MAGEA3 gene expression was detected by qRT in 25 (44%) patients. For the entire cohort, detection of MAGEA3 expression was associated with significantly decreased overall survival (median, 16 vs 33 months; log-rank, p = 0.032). When clinicopathologic factors, including age, gender, stage, tumor extent, lymph node metastasis, tumor grade, perineural invasion and lymphovascular invasion were assessed by univariate analysis, MAGEA3 gene expression and tumor grade were significant prognostic factors for poor survival (HR 2.1, 95% CI: 1.0-4.4, p = 0.041; and HR 3.7, 95% CI: 1.8-7.6, p = 0.0004, respectively). Immunohistochemistry (IHC) was performed and confirmed MAGEA3 protein in PDAC specimens. In conclusion, MAGEA3 is differentially expressed in patients with PDAC; its expression correlates with significantly worse survival. Molecular assessment for MAGEA3 should be considered to improve prognostic evaluation and to identify eligible patients for potential immune-based therapy.

Original languageEnglish (US)
Pages (from-to)2269-2275
Number of pages7
JournalInternational Journal of Cancer
Volume118
Issue number9
DOIs
StatePublished - May 1 2006
Externally publishedYes

Keywords

  • Cancer testis antigen
  • MAGEA3
  • Pancreatic cancer
  • Quantitative real-time RT-PCR

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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  • Cite this

    Kim, J., Reber, H. A., Hines, O. J., Kazanjian, K. K., Tran, A., Ye, X., Amersi, F. F., Martinez, S. R., Dry, S. M., Bilchik, A. J., & Hoon, D. S. B. (2006). The clinical significance of MAGEA3 expression in pancreatic cancer. International Journal of Cancer, 118(9), 2269-2275. https://doi.org/10.1002/ijc.21656