Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

PURPOSE: Prostate cancer (PC) is the second most common cause of cancer related death in men. A number of key limitations with prostate specific antigen (PSA), currently the standard detection test, has justified evaluation of new biomarkers. We have assessed the diagnostic potential of Engrailed-2 (EN2) protein, a homeodomain-containing transcription factor expressed in PC cell lines and secreted into the urine by PC in men. EXPERIMENTAL DESIGN: EN2 expression in PC cell lines and prostate cancer tissue was determined by semi-quantative RT-PCR and immunohistochemistry. First pass urine [without prior digital rectal examination (DRE)] was collected from men presenting with urinary symptoms (referred to exclude/confirm the presence of prostate cancer) and from controls. EN2 protein was measured by ELISA in urine from men with PC (n = 82) and controls (n = 102). RESULTS: EN2 was expressed and secreted by PC cell lines and PC tissue but not by normal prostate tissue or stroma. The presence of EN2 in urine was highly predictive of PC, with a sensitivity of 66% and a specificity of 88.2%, without requirement for DRE. There was no correlation with PSA levels. These results were confirmed independently by a second academic center. CONCLUSIONS: Urinary EN2 is a highly specific and sensitive candidate biomarker of prostate cancer. A larger multicenter study to further evaluate the diagnostic potential of EN2 is justified.

Original publication

DOI

10.1158/1078-0432.CCR-10-2410

Type

Journal article

Journal

Clin Cancer Res

Publication Date

01/03/2011

Volume

17

Pages

1090 - 1098

Keywords

Adult, Aged, Aged, 80 and over, Biomarkers, Tumor, Blotting, Western, Cell Line, Tumor, Early Diagnosis, Enzyme-Linked Immunosorbent Assay, Homeodomain Proteins, Humans, Male, Middle Aged, Nerve Tissue Proteins, Polymerase Chain Reaction, Prostate-Specific Antigen, Prostatic Neoplasms, Sensitivity and Specificity