In a simple definition, cancer is a disease of the cells, which is caused by gene mutations. For a proportion of patients, including women with hormone receptor positive breast cancer, gene expression profiling has a substantial impact on treatment decision-making by determining which patients might—or might not—respond to particular treatment options.
For a year before an osteosarcoma was found in her right proximal tibia, Sammy Ulloa, pushing through pain, persisted with her training as a Division I track and field and cross-country competitor.
