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Prognostic significance of loss of c-fos protein in gastric carcinoma

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Pathology & Oncology Research

Abstract

c-fos was first identified as a viral oncoprotein, and has been studied in terms of its oncogenic function in tumorigenesis. Many experimental and clinical data indicated that c-fos expression plays a role in the progression of several types of carcinomas. However, some recent studies challenge this view as they indicate that c-fos has tumor suppressor activity. In the present study, we assessed c-fos protein expression in 625 consecutive gastric cancers immunohistochemically, and analyzed its relationship with clinicopathologic factors and survival. We found that a loss of c-fos expression is correlated with a more advanced stage, lymph node metastasis, lymphatic invasion and shorter survival, indicating that c-fos expression in gastric cancer cells is lost during progression and that this loss is associated with a poor prognosis. The above findings suggest that loss of c-fos expression has tumor suppressor activity in gastric cancer and we suspect that this suppressor activity might be related to the pro-apoptotic function of c-fos.

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Correspondence to Woo Ho Kim.

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Jin, S.P., Kim, J.H., Kim, M.A. et al. Prognostic significance of loss of c-fos protein in gastric carcinoma. Pathol. Oncol. Res. 13, 284–289 (2007). https://doi.org/10.1007/BF02940306

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