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- Titel:
Prognostic impact of HIF-1alpha expression in patients with definitive radiotherapy for cervical cancer.
- Dokumenttyp:
- Journal Article; Evaluation Studies; Research Support, Non-U.S. Gov't; Comparative Study
- Autor(en):
- Dellas, K; Bache, M; Pigorsch, SU; Taubert, H; Kappler, M; Holzapfel, D; Zorn, E; Holzhausen, HJ; Haensgen, G
- Abstract:
- PURPOSE: To investigate the relationship between the hypoxia-inducible factor-(HIF-)1alpha expression in tumor tissue, tumor oxygenation and hemoglobin levels in patients with advanced cervical cancers prior to radiotherapy and the effect on clinical outcome. PATIENTS AND METHODS: The investigation included 44 patients who underwent definitive radiotherapy for advanced cervical cancers between May 1995 and March 1999. Tumor biopsies were taken prior to treatment, and HIF-1alpha expression was determined by immunohistochemistry. In the same tumor area, tumor tissue oxygenation (pO2) was measured using the Eppendorf device. RESULTS: The 5-year cancer-specific survival of all patients was 60%. Twelve of 44 tumor specimens were HIF-1alpha-negative with a significantly better 5-year survival (92 +/- 8%) versus 32 patients who were HIF-1alpha-positive (45 +/- 10%; p < 0.02). There was no correlation between HIF-1alpha expression and tumor oxygenation (p = 0.57 both for pO2 median and hypoxic fraction < 5 mmHg vs. HIF-1alpha expression). However, patients with hemoglobin levels < 11 g/dl showed elevated HIF-1alpha expression compared to patients with hemoglobin levels > 12.5 g/dl (p = 0.04). Furthermore, HIF-1alpha correlated with vascular endothelial growth factor expression (p = 0.002). In a multivariate Cox regression model, HIF-1alpha expression (relative risk [RR] = 7.5; p = 0.05) revealed an increased risk of tumor-related death. CONCLUSION: The study indicates, that endogenous tumor markers such as HIF-1alpha may serve as prognostic markers of clinical outcome concerning cervical cancer after primary radiotherapy.
- Zeitschriftentitel:
- Strahlenther Onkol
- Jahr:
- 2008
- Band / Volume:
- 184
- Heft / Issue:
- 3
- Seitenangaben Beitrag:
- 169-74
- Sprache:
- eng
- Volltext / DOI:
- doi:10.1007/s00066-008-1764-z
- PubMed:
- http://view.ncbi.nlm.nih.gov/pubmed/18330514
- Print-ISSN:
- 0179-7158
- TUM Einrichtung:
- Klinik und Poliklinik für RadioOnkologie und Strahlentherapie
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