[Association of XAGE-1 gene expression with clinical characteristics of lung cancer].

BACKGROUND AND OBJECTIVE:XAGE-1 is a cancer-testis (CT) antigen which was demonstrated to be expressed at a significant frequency and to be immunogenic in some tumors. The aim of this study is to explore the association between XAGE-1 gene expression and the clinical characteristics of lung cancer. METHODS:Tumor tissue and adjacent lung tissue samples from 85 patients were screened for expression of the four XAGE-1 transcript variants by nest PCR. The correlations between XAGE-1b gene expression and several clinical characteristics were analyzed. RESULTS:32.94% (28/85) of lung cancer samples were positive for XAGE-1 gene. 59.46% (22/37) of the adencarcinoma samples and 21.74% (5/23) of the squamous cell carcinoma samples were positive for one of the four XAGE-1 transcript variants. The frequent of XAGE-1b gene in adencarcinoma was much higher than that in squamous cell carcinoma. There were not any important correlation between XAGE-1b gene expression and clinical characteristics, such as gender, age and clinical stage. CONCLUSION:XAGE-1 gene is highly expressed in lung adenocarcinoma and XAGE-1 may be a promising immunotherapeutic target for lung cancer.

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