Erschienen in:
01.02.2013 | Original article
Hypoxia-related molecules HIF-1α, CA9, and osteopontin
Predictors of survival in patients with high-grade glioma
verfasst von:
O.P. Erpolat, MD, P.U. Gocun, MD, M. Akmansu, MD, G. Ozgun, MD, G. Akyol, MD
Erschienen in:
Strahlentherapie und Onkologie
|
Ausgabe 2/2013
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Abstract
Purpose
A high expression of hypoxia-inducible factor-1 alpha (HIF)-1α, carbonic anhydrase 9 (CA9), and osteopontin appears to be a strong prognostic indicator in many malignancies; however, their role is unclear in high-grade gliomas.
Patients and methods
HIF-1α, CA9, and osteopontin levels in tissue specimens of 92 patients with high-grade glioma were evaluated by immunohistochemistry.
Results
Patients with a high expression of cytoplasmic and nuclear HIF-1α, CA9, and osteopontin had significantly shorter overall survival. The expression results of these markers were combined to form a hypoxic profile, and high hypoxic scores (expression of two or three markers) were significantly correlated to poorer overall survival. In multivariate analysis, high hypoxic score-1 (cytoplasmic HIF-1α, CA9, and osteopontin) was the only independent negative prognostic factor for survival (p = 0.028).
Conclusion
Our results showed that a combination of hypoxic markers is more robust than a single marker for predicting survival in high-grade glioma. It may be necessary to utilize the hypoxic score in selecting patients for targeted therapy in the future.