Triple Negative Breast Cancer (TNBC) T Cell Study

This research study is a gene therapy study. In this study, the treatment uses your own blood cells after they are modified (changed) to attack and destroy cancer cells. This research study will test doses of modified blood cells. The study will look at whether each dose is safe, tolerable, and effective in destroying cancer cells. The study will also look at harms and side effects of administering modified blood cells to people with your type of cancer. This treatment is experimental and has not been approved by the Food and Drug Administration (FDA) for treating triple negative breast cancer.