Expression of Tbx3 gene in breast cancer tissues and its clinical significance

Objective To clarify the expression of Tbx3 gene in breast cancer tissues and its clinical significance, and the expression of Tbx3 gene in different clinical pathological characteristic breast cancer. Methods Expression of Tbx3 gene in 53 specimens of breast cancer and 28 specimens of normal breast tissues were investigated by immunohistochemistry, analysing the clinical significance. Meanwhile the correlation of expression of Tbx3 gene in breast cancer classified was investigated by estrogen receptor ( ER),lymph node metastasis, Her-2 status. Results Positive rate of Tbx3 gene in breast cancer tissues was significantly higher than that in normal breast tissues [73.58% (39/53) vs 14.29% (4/28)] (P ＜ 0.05).Positive rate of Tbx3 gene in ER positive breast cancer tissues was higher than that in ER negative breast cancer tissues [ 84.38% (27/32) vs 57.14% ( 12/21 ) ] (P ＜ 0.05 ). Positive rate of Tbx3 gene in breast cancer tissues with lymph node metastasis was higher than that in breast cancer tissues without lymph node metastasis [86.21%(25/29) vs 58.33% (14/24) ] (P ＜ 0.05). Positive rate of Tbx3 gene in Her-2 positive breast cancer tissues was higher than that in Her-2 negative breast cancer tissues[ 93.75%(15/16) vs 64.86% (24/37) ] (P ＜ 0.05). Conclusions Tbx3 gene is over expressed in breast cancer tissues. It is related to ER, lymph node metastasis, Her-2 status. Key words: Breast neoplasms;  Immunohistochemistry;  Genes,Tbx3