To investigate the expression status and the clinical implications of Girdin protein in breast cancer. The expression status of Girdin protein and clinicopathological parameters in 820 breast cancer specimens was analyzed using immunohistochemistry staining and the relationship between Girdin protein and clinicopathological parameters. The prognosis of breast cancer was subsequently determined. Girdin protein was expressed positively in 295 (35.98%) of the 820 cases examined. The expression of Girdin protein was related to histological type and CerbB2 (P = 0.001, 0.006, and 0.001, respectively). After analyzing survival rates, the cases with highly expressed Girdin protein were shown to attain a significantly more distant metastasis rate and poorer postoperative, disease-specific survival than those with none or low expressed Girdin protein (P = 0.001). In the Cox regression test, Girdin protein was detected as an independent prognostic factor (P = 0.031). Girdin protein may be a potential new distant metastasis biomarker of breast cancer.
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