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A Four Gene Signature of Chromosome Instability (CIN4) Predicts for Benefit from Taxanes in the NCIC-CTG MA21 Clinical Trial

Overview
Journal Oncotarget
Specialty Oncology
Date 2016 Apr 9
PMID 27056899
Citations 2
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Abstract

Recent evidence demonstrated CIN4 as a predictive marker of anthracycline benefit in early breast cancer. An analysis of the NCIC CTG MA.21 clinical trial was performed to test the role of existing CIN gene expression signatures as prognostic and predictive markers in the context of taxane based chemotherapy.RNA was extracted from patients in cyclophosphamide, epirubicin and flurouracil (CEF) and epirubicin, cyclophosphamide and paclitaxel (EC/T) arms of the NCIC CTG MA.21 trial and analysed using NanoString technology.After multivariate analysis both high CIN25 and CIN70 score was significantly associated with an increased in RFS (HR 1.76, 95%CI 1.07-2.86, p=0.0018 and HR 1.59, 95%CI 1.12-2.25, p=0.0096 respectively). Patients whose tumours had low CIN4 gene expression scores were associated with an increase in RFS (HR: 0.64, 95% CI 0.39-1.03, p=0.06) when treated with EC/T compared to patients treated with CEF.In conclusion we have demonstrated CIN25 and CIN70 as prognostic markers in breast cancer and that CIN4 is a potential predictive maker of benefit from taxane treatment.

Citing Articles

Centromere 17 copy number gain reflects chromosomal instability in breast cancer.

Lee K, Kim H, Jang M, Lee S, Ahn S, Park S Sci Rep. 2019; 9(1):17968.

PMID: 31784614 PMC: 6884473. DOI: 10.1038/s41598-019-54471-w.


Clinical Implications of Chromosomal Instability (CIN) and Kinetochore Abnormalities in Breast Cancers.

Voutsadakis I Mol Diagn Ther. 2019; 23(6):707-721.

PMID: 31372940 DOI: 10.1007/s40291-019-00420-2.

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