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Sammut, Stephen-John; Crispin-Ortuzar, Mireia; Chin, Suet-Feung; Provenzano, Elena; Bardwell, Helen A; Ma, Wenxin; Cope, Wei; Dariush, Ali; Dawson, Sarah-Jane; Abraham, Jean E; Dunn, Janet; Hiller, Louise; Thomas, Jeremy; Cameron, David A; Bartlett, John M S; Hayward, Larry; Pharoah, Paul D; Markowetz, Florian; Rueda, Oscar M; Earl, Helena M; Caldas, Carlos
Nature (London), 01/2022, Letnik: 601, Številka: 7894Journal Article
Breast cancers are complex ecosystems of malignant cells and the tumour microenvironment . The composition of these tumour ecosystems and interactions within them contribute to responses to cytotoxic therapy . Efforts to build response predictors have not incorporated this knowledge. We collected clinical, digital pathology, genomic and transcriptomic profiles of pre-treatment biopsies of breast tumours from 168 patients treated with chemotherapy with or without HER2 (encoded by ERBB2)-targeted therapy before surgery. Pathology end points (complete response or residual disease) at surgery were then correlated with multi-omic features in these diagnostic biopsies. Here we show that response to treatment is modulated by the pre-treated tumour ecosystem, and its multi-omics landscape can be integrated in predictive models using machine learning. The degree of residual disease following therapy is monotonically associated with pre-therapy features, including tumour mutational and copy number landscapes, tumour proliferation, immune infiltration and T cell dysfunction and exclusion. Combining these features into a multi-omic machine learning model predicted a pathological complete response in an external validation cohort (75 patients) with an area under the curve of 0.87. In conclusion, response to therapy is determined by the baseline characteristics of the totality of the tumour ecosystem captured through data integration and machine learning. This approach could be used to develop predictors for other cancers.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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