Abstract
This study aimed to investigate whether platelet-derived growth factor D (PDGF-D) is a prognostic biomarker and is associated with platinum resistance in epithelial ovarian cancer, which has not been studied by others previously. In this study, we detected expression of PDGF-D in ovarian cancer tissues through immunohistochemistry and Western blotting. Furthermore, we analyzed the association between PDGF-D expression and clinicopathological features including prognosis in epithelial ovarian cancer. Statistical analyses were performed by using χ test, log-rank test, Cox regression test, and Kaplan-Meier method. High PDGF-D expression is positively correlated with International Federation of Gynecology and Obstetrics stage (P < 0.001), histologic grade (P < 0.001), lymph node metastasis (P = 0.022), and poor prognosis (P < 0.001). Platelet-derived growth factor D in platinum-resistant cases is overexpressed compared with that in platinum-sensitive cases (P < 0.001). Obstetrics stage (P = 0.029) and PDGF-D overexpression (P < 0.001) are independently correlated with platinum resistance. Our study indicates that PDGF-D overexpression is an independent predictor of platinum-based chemotherapy resistance and that it may also be a potential biomarker for targeted therapy and poor prognosis.
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