Expression and clinical significance of fibroblast growth factor 1 in gastric adenocarcinoma
Authors Liu N, Zhang J, Sun S, Yang L, Zhou Z, Sun Q, Niu J
Received 13 December 2014
Accepted for publication 19 January 2015
Published 9 March 2015 Volume 2015:8 Pages 615—621
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 5
Editor who approved publication: Professor Daniele Santini
Naiqing Liu,1,2,* Jingyu Zhang,2,* Shuxiang Sun,2 Liguang Yang,2 Zhongjin Zhou,2 Qinli Sun,2 Jun Niu1
1Department of General Surgery, Qilu Hospital Affiliated to Shandong University, Jinan, People’s Republic of China; 2Department of General Surgery, Yishui Central Hospital, Linyi, People’s Republic of China
*These authors contributed equally to this work
Background: The clinical significance of fibroblast growth factor 1 (FGF1) has been revealed in several cancers, including ovarian cancer, breast cancer, and bladder cancer. However, the clinical significance of FGF1 in gastric adenocarcinoma has not been explored.
Patients and methods: In our experiments, we systematically evaluated FGF1 expression in 178 cases of gastric adenocarcinoma with immunohistochemistry, and subsequently analyzed the correlation between FGF1 expression and clinicopathologic features. Moreover, FGF1 expression in tumor tissue and corresponding adjacent tissue was detected and compared by real-time polymerase chain reaction. The Kaplan–Meier method and the Cox-regression model were used with univariate and multivariate analysis, respectively, to evaluate the prognostic value of FGF1 in gastric adenocarcinoma.
Results: Higher FGF1 expression rate is 56.7% (101/178) in gastric adenocarcinoma. FGF1 expression in gastric adenocarcinoma was significantly higher than adjacent tissue (P<0.0001). Expression of FGF1 is significantly associated with lymph node invasion (P<0.001), distant metastasis (P=0.013), and differentiation (P=0.015). Moreover, FGF1 overexpression was closely related to unfavorable overall survival rate (P=0.021), and can be identified to be an independent unfavorable prognostic factor (P=0.004).
Conclusion: FGF1 is an independent prognostic factor, indicating that FGF1 could be a potential molecular drug target in gastric adenocarcinoma.
Keywords: fibroblast growth factor 1, gastric adenocarcinoma, prognosis, biomarker, lymph node, gene fusion
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