Subjects will register and provide a blood sample which will be used to create the immune therapy product. This will take about 16 weeks during which time they will receive chemotherapy for their nasopharynx cancer. When the immune product is ready the chemotherapy will be stopped and the immunotherapy product will be given to the participant by infusion. On the first day of the research treatment, participants will receive infusion #1 of the EBV immunotherapy product. Fourteen days later, the participant will receive infusion #2. Eight weeks after infusion #2, the research doctor will do some tests to determine the effects that the EBV immunotherapy product has had on the participants tumor. If the research doctor thinks that they would benefit from a third infusion of the EBV immunotherapy product and there is sufficient immunotherapy product remaining, the participant my be given infusion #3.