Abstract
BACKGROUND: The DNA-damage immune-response (DDIR) signature is an immune-driven gene expression signature retrospectively validated as predicting response to anthracycline-based therapy. This feasibility study prospectively evaluates the use of this assay to predict neoadjuvant chemotherapy response in early breast cancer.
METHODS: This feasibility study assessed the integration of a novel biomarker into clinical workflows. Tumour samples were collected from patients receiving standard of care neoadjuvant chemotherapy (FEC + /-taxane and anti-HER2 therapy as appropriate) at baseline, mid- and post-chemotherapy. Baseline DDIR signature scores were correlated with pathological treatment response. RNA sequencing was used to assess chemotherapy/response-related changes in biologically linked gene signatures.
RESULTS: DDIR signature reports were available within 14 days for 97.8% of 46 patients (13 TNBC, 16 HER2 + ve, 27 ER + HER2-ve). Positive scores predicted response to treatment (odds ratio 4.67 for RCB 0-1 disease (95% CI 1.13-15.09, P = 0.032)). DDIR positivity correlated with immune infiltration and upregulated immune-checkpoint gene expression.
CONCLUSIONS: This study validates the DDIR signature as predictive of response to neoadjuvant chemotherapy which can be integrated into clinical workflows, potentially identifying a subgroup with high sensitivity to anthracycline chemotherapy. Transcriptomic data suggest induction with anthracycline-containing regimens in immune restricted, "cold" tumours may be effective for immune priming.
Original language | English |
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Pages (from-to) | 247-258 |
Number of pages | 12 |
Journal | British Journal of Cancer |
Volume | 126 |
Issue number | 2 |
Early online date | 02 Nov 2021 |
DOIs | |
Publication status | Published - 01 Feb 2022 |
Bibliographical note
Funding Information:This work was supported by Almac Diagnostic Services and Cancer Research UK (C44582/A29302). Almac Diagnostic Services undertook microarray and RNA sequencing, but otherwise, the funders had no role in the collection, analysis and interpretation of the data.
Publisher Copyright:
© 2021, The Author(s).
ASJC Scopus subject areas
- Oncology
- Cancer Research
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Dive into the research topics of 'Activation of a cGAS-STING-mediated immune response predicts response to neoadjuvant chemotherapy in early breast cancer'. Together they form a unique fingerprint.Student theses
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Temporal analysis of clinico-pathological variables and biomarkers in cancer
Halliday, S. (Author), Blayney, J. (Supervisor) & Kennedy, R. (Supervisor), Dec 2019Student thesis: Doctoral Thesis › Doctor of Philosophy
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