Abstract
Recent studies have reported that CGI-58 played an important role in carcinogenesis and tumoral progression in several cancers. In this study, we investigated the expression and prognostic value of CGI-58 in patients with endometrail cancer. Initially, the expression of CGI-58 was analyzed in 552 cases of endometrial carcinoma from The Cancer Genome Atlas (TCGA). Then, the mRNA level of CGI-58 from 32 normal endometrium and 40 endometrial cancer tissues was determined using real-time PCR. In addition, immunohistochemical staining of CGI-58 was performed in 140 endometrial specimens including 35 normal endometrial tissues, 25 atypical endometrial hyperplasia and 80 endometrial cancers. The expression of CGI-58 was significantly up-regulated in endometrial cancer tissues compared with normal endometrial tissue both in TCGA database and clinical cohorts. Over-expression of CGI-58 was significantly correlated with poor histological differentiation. Furthermore, high levels of CGI-58 expression were significantly associated with shorter overall survival for all analyzed cases. Our findings demonstrate that CGI-58 is up-regulated in endometrial cancer and high CGI-58 expression is a poor prognostic marker for endometrial cancer. CGI-58 may be a potential contributor to endometrial cancer oncogenesis and progression.
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