Journal
JOURNAL OF CLINICAL PATHOLOGY
Volume 63, Issue 8, Pages 744-747Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/jcp.2010.076653
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One-fifth of breast cancers have the triple-negative phenotype; a good prognostic marker has yet not been described for these tumours. Tumour microarrays from 58 triple-negative patients treated with surgery followed by chemotherapy were analysed for expression of cytokeratin 5/6 (CK5/6), epidermal growth factor receptor (EGFR), vimentin, p63 and cytokeratin 34 beta E12. The mean patient age was 59.2 years with a follow-up from 39 to 168 months. Clinicopathological variables and survival data were correlated with biomarker expression. The frequency of expression of cytokeratin 5/6, EGFR, vimentin, p63 and 34 beta E12 was 33%, 65%, 50%, 19% and 85%, respectively. Each of 34 beta E12, p63, EGFR and T stage significantly correlated with both disease-free survival and overall survival. T stage and 34 beta E12 were independent predictors of overall survival in a multivariate analysis. Expression of 34 beta E12 predicts disease-free and overall survival in patients with triple-negative tumours. Additional studies are planned to confirm these initial findings.
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