Individual Patient TCR-Transduced PBL

Background: Blood cancers (such as leukemias) can be hard to treat, especially if they have mutations in the TP53 or RAS genes. These mutations can cause the cancer cells to create substances called neoepitopes. Researchers want to test a method of treating blood cancers by altering a person s T cells (a type of immune cell) to target neoepitopes. Objective: To test the use of neoepitope-specific T cells in people with blood cancers Eligibility: People aged 18 to 75 years with any of 9 blood cancers. Design: Participants will have a bone marrow biopsy: A sample of soft tissue will be removed from inside a pelvic bone. This is needed to confirm their diagnosis and the TP53 and RAS mutations in their cancer cells. They will also have a skin biopsy to look for these mutations in other tissue. Participants will undergo apheresis: Blood will be taken from their body through a vein. The blood will pass through a machine that separates out the T cells. The remaining blood will be returned to the body through a different vein. The T cells will be grown to become neoepitope-specific T cells. Participants receive drugs for 3 days to prepare their body for the treatment. The modified T cells will be given through a tube inserted into a vein. Participants will need to remain in the clinic at least 7 days after treatment. Participants will have 8 follow-up visits in the first year after treatment. They will have 6 more visits over the next 4 years. Long-term follow-up will go on for 10 more years.

Background: A person s tumor is studied for mutations. When cells are found that can attack the mutation in a person s tumor, the genes from those cells are studied to find the parts that make the attack possible. White blood cells are then taken from the person s body, and the gene transfer occurs in a laboratory. A type of virus is used to transfer the genes that make those white blood cells able to attack the mutation in the tumor. The gene transfer therapy is the return of those white blood cells back to the person. Objective: To see if gene transfer therapy of white blood cells can shrink tumors. Eligibility: People with certain metastatic cancer for which standard treatments have not worked. Design: Participants may complete screening under another protocol. Screening includes: * Getting tumor cells from a previous procedure * Medical history * Physical exam * Scans * Blood, urine, heart, and lung tests The study has 8 stages: 1. Screening tests repeated over 1-2 weeks. Participants will have leukapheresis: Blood is removed by a needle in one arm. A machine removes white blood cells. The rest of the blood is returned by a needle in the other arm. 2. Care at home over approximately 12 weeks. 3. Stopping therapy for 4-6 weeks while their cells are changed in a lab. 4. Hospital stay approximately 3-4 weeks for treatment. An IV catheter will be placed in the chest to administer drugs. 5. Patients on Arm 2 of the study will receive the first dose of pembrolizumab while in the hospital. Three additional doses will be given after the cell infusion 3 weeks apart. 6. Receiving changed cells by catheter. Then getting a drug over 1-5 days to help the cells live longer. 7. Recover in the hospital for 1-2 weeks. Participants will get drugs and have blood and urine tests. 8. Participants will take an antibiotic and maybe an antiviral for at least 6 months after treatment. They will have repeat screening tests at visits every few months for the first year, every 6 months for the second year, then as determined.