Gene Ontology categorization of 17-gene model. A Gene Ontology (GO) categorization was performed using DAVID to identify the associated GO biological processes for the 17-gene model. A VennMaster diagram represents the approximate overlap between GO terms. To simplify, redundant terms were grouped together. Genes in the 17-gene list are involved in a wide range of biological processes known to be involved in breast cancer biology including cell cycle, hormone response, cell death, DNA repair, transcription regulation, wound healing, and others. Since the eight-gene set is entirely contained in the 17-gene set it would be involved in many of the same processes.