Overexpression of TACC3 in Breast Cancer Associates With Poor Prognosis

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Increasing evidences suggest that transforming acidic coiled-coil protein 3 (TACC3) is associated with various types of human cancer. However, the expression of TACC3 in breast cancer tissues remains largely unknown. To identify whether TACC3 can serve as a biomarker for the diagnosis and prognosis of breast cancer, quantitative polymerase chain reaction, western blotting, and immunohistochemistry staining were utilized to detect the expression of TACC3. The mRNA and protein levels of TACC3 in breast cancer samples were novelty higher compared with nontumorous breast tissues. Immunohistochemistry results revealed TACC3 expression was significantly correlated to lymphoid nodal metastasis (P=0.035) and HER-2 status (P=0.021). The patients with high expression of TACC3 had a significantly poor prognosis compared with patients with low expression (P=0.017), especially in the patients with pathological tumor size 2-4 status (P=0.028). Furthermore, multivariate analysis indicated that TACC3 expression was an independent prognostic factor for breast cancer patients (P=0.029). This study, first, suggested TACC3 might be an important molecular marker for diagnosis and prognosis of breast cancer.

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