Triple negative breast cancer often strikes young African-American and Hispanic women and spreads to the lungs and brain. There are no approved drug treatments for this type of breast cancer other than chemotherapy. Clearly, there is a pressing need to develop better treatments for this disease. We have developed a new approach that uses diet to prime tumor cells to respond better to cancer drugs. The diet we are using is similar to a vegetarian diet. We will test this diet in combination with a new drug that kills tumor cells in mice and in patients with triple-negative breast cancer. We predict that the combination will be better than the drug alone. Our goal is to improve survival for patients with triple negative breast cancer.