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Erschienen in: Strahlentherapie und Onkologie 3/2014

01.03.2014 | Original article

A pilot study on potential plasma hypoxia markers in the radiotherapy of non-small cell lung cancer

Osteopontin, carbonic anhydrase IX and vascular endothelial growth factor

verfasst von: C. Ostheimer, M. Bache, A. Güttler, M. Kotzsch, D. Vordermark

Erschienen in: Strahlentherapie und Onkologie | Ausgabe 3/2014

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Abstract

Background

Hypoxic radioresistance plays a critical role in the radiotherapy of cancer and adversely impacts prognosis and treatment response. This prospective study investigated the interrelationship and the prognostic significance of several hypoxia-related proteins in non-small cell lung cancer (NSCLC) patients treated by radiotherapy ± chemotherapy.

Material and methods

Pretreatment osteopontin (OPN), vascular endothelial growth factor (VEGF) and carbonic anhydrase IX (CA IX) plasma levels were determined by ELISA in 55 NSCLC (M0) patients receiving 66 Gy curative-intent radiotherapy or chemoradiation. Marker correlation, association with clinicopathological parameters and the prognostic value of a biomarker combination was evaluated.

Results

All biomarkers were linearly correlated and linked to different clinical parameters including lung function, weight loss (OPN), gross tumor volume (VEGF) and T stage (CA IX). High OPN (p = 0.03), VEGF (p = 0.02) and CA IX (p = 0.04) values were significantly associated with poor survival. Double marker combination additively increased the risk of death by a factor of 2 and high plasma levels of the triple combination OPN/VEGF/CA IX yielded a 5.9-fold risk of death (p = 0.009). The combined assessment of OPN/VEGF/CA IX correlated independently with prognosis (p = 0.03) in a multivariate Cox regression model including N stage, T stage and GTV.

Conclusion

This pilot study suggests that a co-detection augments the prognostic value of single markers and that the integration of OPN, VEGF and CA IX into a hypoxic biomarker profile for the identification of patients with largely hypoxic and radioresistant tumors should be further evaluated.
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Metadaten
Titel
A pilot study on potential plasma hypoxia markers in the radiotherapy of non-small cell lung cancer
Osteopontin, carbonic anhydrase IX and vascular endothelial growth factor
verfasst von
C. Ostheimer
M. Bache
A. Güttler
M. Kotzsch
D. Vordermark
Publikationsdatum
01.03.2014
Verlag
Springer-Verlag
Erschienen in
Strahlentherapie und Onkologie / Ausgabe 3/2014
Print ISSN: 0179-7158
Elektronische ISSN: 1439-099X
DOI
https://doi.org/10.1007/s00066-013-0484-1

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