Known or clinically suspected leptomeningeal disease. Stable, previously treated metastases in the brain or spinal cord, are allowed as long as these are considered stable (by CT or MRI ), and not requiring systemic corticosteroids. 3. History of ≥ grade 3 all ergic reactions as well as known or suspected allergy or intolerance to any agent given in the course of this trial, live cell therapies, or live vaccines. 4. History of suspected cytokine release syndrome (CRS). 5. Known immunodeficiency disorders (testing not required) . 6.