Peptide Vaccine to Prevent Recurrence of Nasopharyngeal Cancer

This study will examine the effectiveness and side effects of an experimental vaccine to prevent recurrence of nasopharyngeal cancer. The likelihood of this cancer returning is higher in patients whose original lesion was large, whose cancer had spread to the adjacent lymph nodes, or who had surgery for metastatic disease (cancer that spread beyond the primary site). Nasopharyngeal tumors are caused by a common virus called Epstein-Barr virus, which produces a protein called LMP-2. Vaccination with specific pieces, or peptides, of the LMP-2 protein may boost the immune system's fight against the cancer. The vaccine injections are mixed with an oil-based substance called Montanide ISA-51, which is intended to increase the immune response to the peptide. Patients 18 years of age and older whose nasopharyngeal cancer has been controlled by standard treatment with surgery, chemotherapy, or radiation therapy and who are currently free of disease may be eligible for this study. Candidates are screened with a physical examination and blood and urine tests. x-rays and other imaging studies are also done in patients who have not had these tests recently. All candidates are tested for HLA tissue type. Only patients with type HLA-A\*1101 or HLA-A\*2402 - the types on which the two vaccines in this study are based - receive vaccine therapy; others are offered standard medical treatment and observation. Participants are randomly assigned to receive injections of one of two different vaccines (LMP-2:340-349 or LMP-2:419-427) to determine which peptide may offer the best immunity. Each treatment course consists of weekly immunizations for 8 consecutive weeks. The injections are given under the skin of the thigh. After every other treatment course (about every 3 months), patients undergo a series of x-rays and scans to look for tumor. The immunizations are given at the NIH Clinical Center. Patients are monitored for 1 hour after each injection and have blood tests and a physical