15. Subjects must have received at least one line of chemotherapy prior to receiving adoptive T cell therapy and should have exhausted standard of care systemic therapy options. The decision to implement the T cell therapy will be at the discretion of the treating physician. The timing and total exposure to chemotherapy will depend on the tumor type in question (more systemic options for breast cancer; fewer for gastric cancer, for example). Due to the heterogeneity of tumors being treated in this protocol, the discretion of the treating physician in terms of timing of immunotherapy will be critical.