STEMVAC(EpiThany)

This phase II trial studies how well a cancer vaccine called STEMVAC works in combination with chemotherapy in treating patients with PD-L1 negative, triple-negative breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic). STEMVAC is designed to target proteins that are expressed on breast cancer stem cells, and it is believed to work by boosting the immune system to recognize and destroy the invader tumor cells that are causing the disease. The allowable combination chemotherapy includes: (1) Paclitaxel is in a class of chemotherapy medications called antimicrotubule agents. It stops tumor cells from growing and dividing and may kill them. (2) Docetaxel is in a class of chemotherapy medications called taxanes. It stops tumor cells from growing and dividing and may kill them. (3) Cisplatin is in a class of chemotherapy medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of tumor cells. (4) Carboplatin is in a class of chemotherapy medications known as platinum-containing compounds. It works in a way similar to the anticancer drug cisplatin but may be better tolerated than cisplatin. Carboplatin works by killing, stopping or slowing the growth of tumor cells. (5) Doxorubicin is in a class of chemotherapy medications called anthracyclines. Doxorubicin damages the cell's deoxyribonucleic acid (DNA) and may kill tumor cells. It also blocks a certain enzyme needed for cell division and DNA repair. (6) Liposomal doxorubicin is a form of the anticancer drug doxorubicin that is contained inside very tiny, fat-like particles. Liposomal doxorubicin may have fewer side effects and work better than other forms of the drug. (7) Eribulin is in a class of chemotherapy medications called microtubule dynamics inhibitors. It works by stopping the growth and spread of tumor cells. Giving STEMVAC in combination with chemotherapy may be an effective treatment for PD-L1 negative metastatic triple-negative breast cancer.