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Background  CD73 is one of the critical component in the formation of immunosuppressive microenvironment in cancers. We aimed to provide an overview of the current status of CD73 expression and its relationship with clinicopathlogical features and prognosis in different cancers.    Methods  PubMed, Web of Science, EMBASE and Cochrane library were searched to identify the relevant studies. CD73 expression level in distinct cancers and its relationship with clinicopathlogical characteristics and prognosis were investigated using online database. Meta-analyses were conducted using RevMan v5.0 and STATA v12.0.    Results  Fourteen publications with 2951 cases were included. The incidence of high CD73 expression was 0.50 (95% CI: 0.36–0.63). Data from Oncomine validated that median CD73 expression level in tumor tissues was markedly higher than that in normal tissues in most kinds of cancers except cecum adenocarcinoma and ovarian cancer ( P  < 0.05). High CD73 expression was significantly correlated with shorter overall survival (OS) in various cancers (high risk [HR] = 1.48;  P  < 0.05). Subgroup analysis using online database demonstrated that high CD73 expression was significantly correlated with poor OS in breast (HR = 1.23;  P  < 0.05) and ovarian cancer (HR = 1.14;  P  < 0.05), but favorable OS in lung (HR = 0.80;  P  < 0.05) and gastric cancer (HR = 0.71;  P  < 0.05). High CD73 expression was dramatically associated with lymph node metastases (OR = 2.61;  P  = 0.05).    Conclusion  High CD73 expression was significantly associated with lymph node metastases and a promising prognostic factor in different types of cancers.    Electronic supplementary material  The online version of this article (10.1186/s12885-018-4073-7) contains supplementary material, which is available to authorized users.

Comprehensive evaluation of NT5E/CD73 expression and its prognostic significance in distinct types of cancers