期刊
CLINICAL CANCER RESEARCH
卷 14, 期 14, 页码 4511-4516出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1078-0432.CCR-07-4741
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Purpose: To evaluate the role of microtubule-associated variables as potential predictors of response and clinical outcome in patients with advanced breast cancer receiving single-agent docetaxel or doxorubicin chemotherapy. Experimental Design: The analysis was done on 173 tumor samples from patients with locally advanced or metastatic breast cancer who have participated in theTAX-303 phase III trial in which patients were randomly assigned to receive docetaxel or doxorubicin. Expression of total alpha- and beta-tubulin, classes II to IV beta-tubulin isotypes, and tau protein was evaluated by immunohistochemistry on formalin-fixed, paraffin-embedded tumors from the primary breast cancer. Results: We observed that patients with high expression of class III beta-tubulin isotype had a higher probability of response to docetaxel than to doxorubicin treatment (odds ratio, 1.9; 95% confidence interval, 1.01-3.7; P = 0.05). No difference was observed in terms of time to progression or in terms of overall survival. Conclusions: This study suggests that the superiority of docetaxel over doxorubicin seems to be confined to the subgroup of patients with high expression of class III beta-tubulin isotype.
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