title: Prognostic significance of phosphatase of regenerating liver-3 expression in ovarian cancer.
abstract: Phosphatase of regenerating liver-3 (PRL-3) is overexpressed in several human cancers and associated with tumor progression, invasion and metastasis. However, the correlation between PRL-3 expression and clinical outcome in ovarian cancer has not been studied. In the present study, we investigated the expression of PRL-3 in 119 ovarian cancers and 30 normal ovarian tissues by immunohistochemistry with an anti-PRL-3 mouse monoclonal antibody 3B6, and analyzed its relationship with clinicopathologic factors and survival. The results demonstrated that PRL-3 expression was significantly higher in ovarian cancers compared to normal ovarian tissues (P < 0.001). PRL-3 expression is not correlated with patient age, menstruation, tumor size, histological type, residual tumor, or other clinical findings. The patients with PRL-3-positive tumors had a significant poor prognosis than those with PRL-3-negative tumors. Univariate analysis identified PRL-3 expression as a poor outcome predictor (HR 1.925, 95% CI, 1.046-3.544, P = 0.035). Multivariate analysis indicated that PRL-3 expression was an independent prognostic factor of borderline significance (HR 1.695, 95% CI, 0.914-3.145, P = 0.094). Our results suggest that PRL-3 may serve as a valuable marker for diagnosis of ovarian cancer and as a potential independent prognostic factor for ovarian cancer.
authors.affiliation: Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, 52 Fu, cheng Road, Beijing, 100, 142, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Ren
authors.forename: Beihai
authors.initials: B
authors.lastname: Jiang
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Xing
authors.forename: Bin
authors.initials: B
authors.lastname: Dong
authors.forename: Lirong
authors.initials: L
authors.lastname: Peng
authors.forename: Lin
authors.initials: L
authors.lastname: Meng
authors.forename: Huiyu
authors.initials: H
authors.lastname: Xu
authors.forename: Chengchao
authors.initials: C
authors.lastname: Shou
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000378:metabolism; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008875:Middle Aged; D015999:Multivariate Analysis; D009363:Neoplasm Proteins / Q000378:metabolism*; D010051:Ovarian Neoplasms / Q000175:diagnosis* / Q000378:metabolism* / Q000473:pathology; D010053:Ovary / Q000378:metabolism* / Q000473:pathology; D011379:Prognosis; D017027:Protein Tyrosine Phosphatases / Q000378:metabolism*
chemical_list: D014408:Biomarkers, Tumor; D009363:Neoplasm Proteins; C484730:PTP4A3 protein, human; D017027:Protein Tyrosine Phosphatases