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  • Title: Increased expression of S100A4 and its prognostic significance in esophageal squamous cell carcinoma.
    Author: Ninomiya I, Ohta T, Fushida S, Endo Y, Hashimoto T, Yagi M, Fujimura T, Nishimura G, Tani T, Shimizu K, Yonemura Y, Heizmann CW, Schäfer BW, Sasaki T, Miwa K.
    Journal: Int J Oncol; 2001 Apr; 18(4):715-20. PubMed ID: 11251165.
    Abstract:
    S100A4 has been implicated in invasion and metastasis of cancer, but prognostic significance of its expression in esophageal squamous cell carcinoma remains unclear. In this study, we examined the expression of S100A4 by Western blot analysis and immunohistochemistry in surgically resected esophageal squamous cell carcinoma. The relationship between S100A4 tissue status and clinicopathological findings was analyzed to assess the prognostic significance of S100A4 in esophageal squamous cell carcinoma. The S100A4 protein level was significantly higher in tumor tissue than in corresponding normal esophageal mucosa (p<0.05) in 22 cases of esophageal carcinoma by Western blot analysis. S100A4 expression was detected in 25% of 52 cases of esophageal squamous cell carcinoma by immunohistochemistry and correlated with the depth of invasion (p<0.05). Patients with S100A4-positive carcinoma had significantly poorer prognosis than those with S100A4-negative carcinoma, which was also true in the cases with deep invasion of the primary cancer (T3, T4) (p<0.01 and p<0.05, respectively). Moreover, S100A4 tissue status remained the only independent prognostic parameter in the multivariate analysis. Our results suggest that S100A4 may play a key role in the progression of esophageal carcinoma and that immunohistochemical detection of S100A4 in the primary tumor may be useful for the prediction of a poor prognosis.
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