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Comparison of serum human epididymis protein 4 and carbohydrate antigen 125 as markers in ovarian cancer: A meta-analysis.

Zhen S, et al. Mol Clin Oncol. 2014.


Ovarian cancer (OC) is the third most common type of gynecological cancer. Measurements of human epididymis protein 4 (HE4) levels have been suggested for improving the specificity of the laboratory identification of OC. For this meta-analysis, the Medline, Embase and Cochrane databases were searched to identify relevant studies. All the included studies for diagnostic performance were combined with sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, diagnostic odds ratios (DORs) with 95% confidence intervals (CIs), summary receiver operating characteristic (SROC) curves and areas under the SROC curves (AUC). A total of 25 studies including 4,729 patients were identified as eligible for inclusion in the final analysis. The pooled sensitivities and respective 95% CIs for HE4 and carbohydrate antigen 125 (CA125) were 0.74 (0.72-0.76) and 0.74 (0.72-0.76), respectively. The pooled specificities and respective 95% CIs for HE4 and CA125 were 0.90 (0.89-0.91) and 0.83 (0.81-0.84), respectively. The summary DORs and 95% CIs for HE4 and CA125 were 43.35 (29.13-64.51) and 17.06 (10.97-26.51), respectively and the AUCs for HE4 and CA125 were 0.8915 and 0.8538, respectively. In total, 9 studies investigated the diagnostic accuracy of HE4 combined with CA125 for the diagnosis of OC. The pooled sensitivity and 95% CIs of HE4, CA125 and HE4+CA125 in this subgroup were 0.71 (0.67-0.75), 0.74 (0.69-0.78) and 0.90 (0.87-0.92), respectively; the pooled specificity and 95% CIs of HE4, CA125 and HE4+CA125 were 0.92 (0.90-0.94), 0.73 (0.69-0.76) and 0.85 (0.82-0.87), respectively. The diagnostic accuracy of HE4 in distinguishing OC from other benign gynecological diseases was found to be to be superior to that of CA125 and the combination of HE4 and CA125 may enhance the diagnostic sensitivity.


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