A Meta-Analysis Portal for Human Breast Cancer Transcriptomics Data: BreastCancerVis.

Breast cancer is a major disease posing many therapeutic and societal challenges. The major problem remains the diversity of the disease. Breast cancers are divided in several distinct subtypes, but the specific mechanisms involved in each subtype are not understood. We apply advanced network medicine techniques to the analysis of transcriptomics data of several breast cancer cell lines. We show that different subtypes are characterized by highly heterogeneous pathway activity. Using the overlap between differentially expressed genes and drug-induced expression changes, we present candidate drugs for repurposing. Furthermore, we find different active subnetworks across the subtypes, regulated by distinct transcription factors. All these results are made available via a user-friendly portal at http://phenome.manchester.ac.uk/breastcancer/.