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Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma

  • Authors:
    • Fengchun Hu
    • Xiaohua Chen
    • Xiqiang Liu
    • Cheng Wang
    • Lanhai Lv
    • Nan Xie
    • Tianyi Wang
    • Hongzhang Huang
  • View Affiliations / Copyright

    Affiliations: Department of Oral Maxillofacial‑Head and Neck Oncology, The Affiliated Hospital of Stomatology, Sun Yat‑Sen University, Guangzhou, Guangdong 510055, P.R. China, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510080, P.R. China, Center for Immunology and Infectious Diseases, SRI International, Harrisonburg, VA 22802, USA
    Copyright: © Hu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1303-1308
    |
    Published online on: July 15, 2015
       https://doi.org/10.3892/ol.2015.3496
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Abstract

Raf kinase inhibitor protein (RKIP) is recognized as a suppressor of metastasis, and the downregulation of RKIP is associated with aggressive events and a poor outcome in a variety of solid tumors. However, the clinical relevance of RKIP expression in tongue squamous cell carcinoma (TSCC) remains unclear. In the present study, the expression of RKIP in 85 pairs of TSCC and corresponding adjacent non‑cancerous tissues, 30 matched metastatic lesions from the cervical lymph nodes and 32 oral leukoplakia samples were assessed using immunohistochemical methods. The association between RKIP expression and clinicopathological features was then evaluated. Kaplan‑Meier survival analysis and Cox proportional hazards model were used to estimate the effect of RKIP expression on the survival time of patients with TSCC. The results revealed that RKIP expression was dramatically downregulated in TSCC, and to an even greater extent in metastatic lesions. RKIP downregulation was significantly associated with the presence of lymphatic metastasis and the clinical stage of TSCC. Furthermore, patients with low RKIP expression demonstrated a significantly shorter overall survival time. Multivariate analysis indicated that RKIP expression may be an independent prognostic factor in TSCC. In conclusion, the present findings indicate that the lack of RKIP expression is of clinical significance and may serve as a prognostic biomarker in TSCC.
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Copy and paste a formatted citation
Spandidos Publications style
Hu F, Chen X, Liu X, Wang C, Lv L, Xie N, Wang T and Huang H: Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma. Oncol Lett 10: 1303-1308, 2015.
APA
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N. ... Huang, H. (2015). Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma. Oncology Letters, 10, 1303-1308. https://doi.org/10.3892/ol.2015.3496
MLA
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N., Wang, T., Huang, H."Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma". Oncology Letters 10.3 (2015): 1303-1308.
Chicago
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N., Wang, T., Huang, H."Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma". Oncology Letters 10, no. 3 (2015): 1303-1308. https://doi.org/10.3892/ol.2015.3496
Copy and paste a formatted citation
x
Spandidos Publications style
Hu F, Chen X, Liu X, Wang C, Lv L, Xie N, Wang T and Huang H: Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma. Oncol Lett 10: 1303-1308, 2015.
APA
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N. ... Huang, H. (2015). Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma. Oncology Letters, 10, 1303-1308. https://doi.org/10.3892/ol.2015.3496
MLA
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N., Wang, T., Huang, H."Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma". Oncology Letters 10.3 (2015): 1303-1308.
Chicago
Hu, F., Chen, X., Liu, X., Wang, C., Lv, L., Xie, N., Wang, T., Huang, H."Clinicopathological features and prognostic implications of Raf kinase inhibitor protein downregulation in tongue squamous cell carcinoma". Oncology Letters 10, no. 3 (2015): 1303-1308. https://doi.org/10.3892/ol.2015.3496
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