Abstract
Introduction
The expression of excision repair cross-complementation group 1 (ERCC1) is reported to be correlated with resistance to platinum-based drugs. Class III β-tubulin is reported to be correlated with resistance to taxanes.
Methods
In the present study, we evaluated whether ERCC1 and class III β-tubulin expression could be used to predict progression-free and/or overall survival in 34 patients with locally advanced non-small cell lung cancer (NSCLC) receiving concurrent chemoradiation therapy with cisplatin and docetaxel, and immunohistochemistry was used to examine the expression of these two proteins in tumor samples obtained from the patients.
Results
Immunostaining for ERCC1 and class III β-tubulin was positive in 16 and 12 patients, respectively. A significant correlation was observed between ERCC1 expression and response to chemotherapy (P = 0.012), and between class III β-tubulin expression and histology (P = 0.029). Patients negative for ERCC1 had a significantly longer median progression-free (62.5 vs. 36 weeks, P = 0.009), but not overall (171 vs. 50.5 weeks, P = 0.208), survival than those positive for ERCC1. Expression of class III β-tubulin was not correlated with progression-free or overall survival (P = 0.563 and P = 0.265, respectively). Multivariate analysis adjusting for possible confounding factors showed that negative ERCC1 expression (hazard ratio = 3.972, P = 0.009) was a significantly favorable factor for progression-free survival.
Conclusions
This retrospective study indicates that immunostaining for ERCC1 may be useful for predicting survival in NSCLC patients receiving concurrent chemoradiotherapy with cisplatin and docetaxel, and can provide information critical for planning personalized chemotherapy.
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Abbreviations
- NSCLC:
-
Non-small cell lung cancer
- ERCC1:
-
Excision repair cross-complementation group 1
- p-stage:
-
Pathological stage
- RECIST:
-
Response evaluation criteria in solid tumors
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Acknowledgments
This study was supported in part by Grants-in-Aid from the 21st Century Centers of Excellence Program for Medical Science, Japan.
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None of the authors has a financial relationship with a commercial entity that has an interest in the subject of this manuscript.
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Azuma, K., Sasada, T., Kawahara, A. et al. Expression of ERCC1 and class III β-tubulin in non-small cell lung cancer patients treated with a combination of cisplatin/docetaxel and concurrent thoracic irradiation. Cancer Chemother Pharmacol 64, 565–573 (2009). https://doi.org/10.1007/s00280-008-0907-3
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DOI: https://doi.org/10.1007/s00280-008-0907-3