The Role of PAR1 Autoantibodies in Patients with Primary Epithelial Ovarian Cancer

Anticancer Research
Katrin KreienbringElena Ioana Braicu

Abstract

This study aimed to analyze the predictive, prognostic and diagnostic value of autoantibodies to coagulation factor II thrombin receptor (F2R; protease-activated receptor 1, PAR1) (PAR1-AB) in patients with primary epithelial ovarian cancer (EOC). A total of 197 patients with primary EOC and 200 healthy female blood donors were included in the study. Enzyme-linked immunosorbent assay was applied to determine PAR1-AB levels in blood sera taken preoperatively. Correlation of PAR1-AB with clinicopathological outcome, progression-free (PFS) and overall (OS) survival was analyzed and patients were compared with controls. PAR1-AB was significantly negatively correlated with histological grading (p=0.008) and was significantly lower in the patient group compared to healthy controls (p<0.001). There was no significant correlation of PAR1-AB level with PFS or OS. This study showed PAR1-AB to significantly decrease in patients with primary EOC and with histological high-grade carcinoma. The relevance of PAR1-AB in early detection of ovarian cancer and follow-up for EOC should be further investigated.

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