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Androgen receptor (AR) expression is an independent unfavorable prognostic factor in gastric cancer

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Abstract

Purpose

To investigate the expression of sex steroid receptors in gastric cancer and to correlate their tumor expression profile with the clinicopathological parameters and overall survival of the patients.

Methods

Immunohistochemical methodology was employed in formalin-fixed paraffin-embedded sections from 86 patients with gastric carcinoma. Monoclonal antibodies against androgen (AR), estrogen (ER), and progesterone (PR) receptors were used. Survival rates were estimated by the Kaplan-Meier method and compared using the log-rank test. Multivariate analysis was performed by the Cox proportional hazards model.

Results

Fifteen (17.4%) cases of gastric adenocarcinomas were positive for AR, two (2.3%) were positive for PR and three (3.5%) were positive for ER. Significantly higher AR expression was found in tumors with metastases to lymph nodes (P = 0.03). Patients with AR-positive tumors (AR+) had worse prognosis than (AR-) patients (median survival 9 months vs 24 months, P = 0.03). Patients with AR- and heat shock protein 27 (HSP27)-positive tumors (AR+/HSP27+) had a median survival of 6 months, whereas (AR-/HSP27-) patients had a median survival of 42 months (P = 0.017). Multivariate analysis revealed that AR expression and UICC stage were independent factors of unfavorable prognosis (P = 0.037 and P = 0.0055, respectively).

Conclusions

Identification of AR-positive gastric carcinomas in gastric biopsies may warrant a more aggressive therapeutic approach and anti-androgen or AR-targeted agents may represent a novel strategy in tackling this devastating malignancy.

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Correspondence to A. G. Papavassiliou.

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Kominea, A., Konstantinopoulos, P.A., Kapranos, N. et al. Androgen receptor (AR) expression is an independent unfavorable prognostic factor in gastric cancer. J Cancer Res Clin Oncol 130, 253–258 (2004). https://doi.org/10.1007/s00432-003-0531-x

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  • DOI: https://doi.org/10.1007/s00432-003-0531-x

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