Abstract: The invention described in the application relates to a panel of gene expression markers for node-negative, ER-positive, HER2-negative breast cancer patients. The invention thus provides methods and compositions, e.g., kits and/or microarrays, for evaluating gene expression levels of the markers and methods of using such gene expression levels to evaluate the likelihood of relapse of a node-negative, ER-positive, HER2-negative breast cancer patient. Such information can be used in determining treatment options for patients.

Abstract: Herein is described the use of a collection of 50 breast cancer cell lines to match responses to 77 conventional and experimental therapeutic agents with transcriptional, proteomic and genomic subtypes found in primary tumors. Almost all compounds produced strong differential responses across the cell lines produced responses that were associated with transcriptional and proteomic subtypes and produced responses that were associated with recurrent genome copy number abnormalities. These associations can now be incorporated into clinical trials that test subtype markers and clinical responses simultaneously.

Abstract: Methods and systems for identifying a cancer patient suitable for treatment with a PARP inhibitor. A 6-gene, 7-gene and 8-gene predictor panels of genes that are predictive of patient resistance or sensitivity to PARP inhibitors such as Olaparib.

Abstract: Herein is described the use of a collection of 50 breast cancer cell lines to match responses to 77 conventional and experimental therapeutic agents with transcriptional, proteomic and genomic subtypes found in primary tumors. Almost all compounds produced strong differential responses across the cell lines produced responses that were associated with transcriptional and proteomic subtypes and produced responses that were associated with recurrent genome copy number abnormalities. These associations can now be incorporated into clinical trials that test subtype markers and clinical responses simultaneously.

Abstract: Methods of-identifying a basal or luminal phenotype of a cell, comprising detecting expression of one or more of a set of predictive biomarker genes or proteins that identify the cell as having a basal or luminal cancer subtype and compositions for treating identified basal or luminal cancers.