alexa An interferon-related gene signature for DNA damage resistance is a predictive marker for chemotherapy and radiation for breast cancer.


Journal of Cancer Clinical Trials

Author(s): Weichselbaum RR, Ishwaran H, Yoon T, Nuyten DS, Baker SW, , Weichselbaum RR, Ishwaran H, Yoon T, Nuyten DS, Baker SW,

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Abstract Individualization of cancer management requires prognostic markers and therapy-predictive markers. Prognostic markers assess risk of disease progression independent of therapy, whereas therapy-predictive markers identify patients whose disease is sensitive or resistant to treatment. We show that an experimentally derived IFN-related DNA damage resistance signature (IRDS) is associated with resistance to chemotherapy and/or radiation across different cancer cell lines. The IRDS genes STAT1, ISG15, and IFIT1 all mediate experimental resistance. Clinical analyses reveal that IRDS(+) and IRDS(-) states exist among common human cancers. In breast cancer, a seven-gene-pair classifier predicts for efficacy of adjuvant chemotherapy and for local-regional control after radiation. By providing information on treatment sensitivity or resistance, the IRDS improves outcome prediction when combined with standard markers, risk groups, or other genomic classifiers.
This article was published in Proc Natl Acad Sci U S A and referenced in Journal of Cancer Clinical Trials

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