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  • Title: Increased S100A4 expression combined with decreased E-cadherin expression predicts a poor outcome of patients with pancreatic cancer.
    Author: Oida Y, Yamazaki H, Tobita K, Mukai M, Ohtani Y, Miyazaki N, Abe Y, Imaizumi T, Makuuchi H, Ueyama Y, Nakamura M.
    Journal: Oncol Rep; 2006 Sep; 16(3):457-63. PubMed ID: 16865243.
    Abstract:
    The calcium-binding protein, S100A4, with an inverse association of E-cadherin, is known to correlate with prognosis in various cancers. In this study, we investigated the expression of the S100A4 and E-cadherin status in relation to the clinicopathological parameters of pancreatic cancer. The expression status of these two proteins was examined in 72 specimens of primary pancreatic carcinoma with immunohistochemistry. Fifty-six of 72 (78%) surgical specimens of primary pancreatic cancer were positive for S100A4 according to immunohistochemistry. Thirty-one (43%) specimens of pancreatic cancer showed positive expression of E-cadherin. The inverse association of S100A4 and E-cadherin expression was significant in the cancers (p < 0.0001). The S100A4 expression correlated significantly with the pathological T stage and poorer prognosis (p = 0.024). The 41 E-cadherin-negative cases showed poorer prognoses and a higher incidence of liver metastasis (p = 0.0344, p = 0.027). The 10 cases with S100A4-negative/E-cadherin-positive cancers showed a significantly better prognosis than the others (p < 0.05). The histological grade (p = 0.004), nodal status (p < 0.0001) and S100A4-positive status (p = 0.048) were highly significant independent prognostic predictors (p < 0.05). These results suggest that S100A4 overexpression combined with reduced E-cadherin expression play important roles in tumor progression and metastasis in pancreatic cancer. The combined examination of these two molecules is useful in evaluating the outcome of pancreatic cancer patient.
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