VEGF, COX-2, and PCNA expression in renal cell carcinoma subtypes and their prognostic value
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To evaluate the prognostic value of new markers such as VEGF (vascular endothelial growth factor), COX-2 (cyclooxygenase-2), and PCNA (proliferating cell nuclear antigen) and review their differences in expression by histological subtype in patients with renal cell carcinoma (RCC).
About 99 patients who underwent radical (n = 79) or partial nephrectomy (n = 20) were included in this study. Histopathological specimens from the subjects were retrospectively analyzed immunohistochemically for the presence of VEGF, COX-2, or PCNA.
Mean staining ratios for VEGF, COX-2, and PCNA were 16.5, 16.8, and 31%, respectively. Correlations were evaluated among these three prognostic factors. There was no correlation between PCNA and VEGF (P = .068), but there were significant correlations between COX-2 and both PCNA and VEGF (P = .005 and P = .000, respectively). A significant correlation was found between the expression of VEGF and both pathologic stage and vascular invasion (P = .018 and P = .025, respectively). In addition, patients with conventional RCC had significantly lower VEGF and COX-2 levels than those with papillary RCC (P < .012).
It is obvious that prognostic factors such as VEGF, COX-2, and PCNA may vary depending on histological subtype. The level of expression of these factors together with histological subtype may provide valuable predictive information about the outcome of treatment.
- VEGF, COX-2, and PCNA expression in renal cell carcinoma subtypes and their prognostic value
International Urology and Nephrology
Volume 40, Issue 4 , pp 861-868
- Cover Date
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- Online ISSN
- Springer Netherlands
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- Prognostic factors
- Renal cell carcinoma
- Industry Sectors
- Author Affiliations
- 1. Department of Urology, Baskent University School of Medicine, 5. Sokak, No: 48, Kat:3, 06490, Bahcelievler, Ankara, Turkey
- 2. Department of Pathology, Baskent University School of Medicine, Ankara, Turkey