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Stathmin 1 expression predicts prognosis and benefits from adjuvant chemotherapy in patients with gallbladder
Xiaobo Bo1, Jie Wang1, Qiang Fu2
1Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
Background:
Abnormal expression of Stathmin 1(STMN1) plays an important role in the proliferation and migration of gallbladder carcinoma (GBC). The purpose of current study is to investigate the prognostic significance of STMN1 in GBC patients after surgery.
Methods:
STMN1 expression was evaluated with immunohistochemistry (IHC) on tissue microarrays from 70 GBC patients from a single institution between 2009 and 2013. The correlation between STMN1 expression and clinicopathological profiles and the prognosis was statistically inspected.
Results:
High expression of STMN1 in tumoral tissue was associated with poor tumor differentiation (P<0.001), lymph node metastasis (P=0.028), advanced TNM stage (P=0.011) and short overall survival (P<0.001). Cox multivariate analysis identified the STMN1 expression as an independent prognostic factor. Integrating STMN1 expression with current TNM staging system generate a better clinical predictive model for GBC. Moreover, the postoperative adjuvant chemotherapy (ACT) showed significant benefit in TNM III- IV stage patients with low STMN1 expression.
Conclusion:
STMN1 might be an independent adverse prognostic factor in GBC patients after surgery, which could be combined with TNM staging system to improve the predictive accuracy for overall survival. Low expression of STMN1 stratified a subgroup of advanced GBC patients who could benefit from ACT.
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