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ORIGINAL ARTICLE
Year : 2013  |  Volume : 9  |  Issue : 7  |  Page : 173-177

RASSF7 and RASSF8 proteins are predictive factors for development and metastasis in malignant thyroid neoplasms


1 Department of Vascular and Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001, China
2 Department of Obstetrics, The First Affiliated Hospital of China Medical University, Shenyang 110001, China

Correspondence Address:
Shijie Xin
Department of Vascular and Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang 110001
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1482.122519

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Objectives: To study the expression status of Ras-association domain family 7 (RASSF7) and Ras-association domain family 8 (RASSF8) in nodular thyroid goiter (NTG), medullary thyroid carcinoma (MTC), and papillary thyroid carcinoma (PTC) and establish whether a correlation exists between the presence of RASSF7 and RASSF8 proteins and clinicopathological parameters of the disease. Materials and Methods: RASSF7 and RASSF8 protein expression was examined immunohistochemically on paraffin-embedded thyroid tissues from 112 cases with PTC, 20 cases with MTC, and 38 cases with NTG. Results: The immunohistochemical expression of RASSF7 and RASSF8 was higher in PTC and MTC than in NTG (P < 0.001). In thyroid carcinomas, RASSF7 and RASSF8 expression was significantly correlated with a more advanced TNM stage (P = 0.035, P = 0.037), age, sex, lymph node metastasis (P = 0.006, P = 0.002), and tumor size (P = 0.012, P = 0.015). Conclusions: RASSF7 and RASSF8 expression was increased in PTC and MTC compared to NTG, and this may be linked to the development and progression of thyroid carcinoma. In addition, these proteins were correlated with more advanced tumor stages, tumor size, and metastasis.


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