Validation of urinary HE4 as a biomarker for ovarian cancer

5563 Background: Urinary HE4 has been reported as a promising biomarker for ovarian cancer (OC). In the current study, a large validation was performed to evaluate urinary HE4 as a biomarker for the stratification of OC from benign pelvic masses. Methods: Normalized HE4 was obtained from the ratio of HE4 (pmol/L measured with HE4 EIA) and creatinine (mg/dL measured with a Jaffe Reaction) in single-point urine samples from female subjects with a pelvic mass (N = 809). The samples were from one case-control prospective study (Moore RG, 2008) and two prospective clinical trials (NCT00315692 and NCT00987649). R Package was used to randomly distribute the subjects into the Training and Testing Sets. Analyze-it was used to analyze the clinical performance. Results: Medians of Normalized HE4, sensitivities (SN) and likelihood ratios (LR) (+) of Normalized HE4 at two levels of specificity (SP) are presented in the Table. Conclusions: Urinary HE4 normalized with urinary creatinine appears to be a valid biomarker for the stratification of OC from a benign pelvic mass. [Table: see text]