RT info:eu-repo/semantics/article T1 Infusion of lymphocytes obtained from a donor immunised with the paraprotein idiotype as a treatment in a relapsed myeloma A1 Barrios del Pino, Yvelise A1 Cabrera, Rafael A1 Díaz-Espada, Fernando A1 Briz, M. A1 Forés, R. A1 Barbolla, L. A1 Sanjuán, I. A1 Regidor, C. A1 Penalver, F. J. A1 Fernández, M. N. K1 Multiple myeloma K1 Idiotype vaccination K1 Donor lymphocyte infusions AB A 48-year-old patient with IgA k multiple myeloma received a BMT from his HLA-matched sibling. After transplantation, the disease relapsed. Melphalan therapy followed by reinfusion of haemopoietic blood stem cells collected from the patient led to the improvement of the clinical status, although mixed chimerism and an elevated serum IgA persisted. Successful donor immunisation against an immunogenic preparation of the recipient monoclonal protein was performed before the infusion of donor T lymphocytes (DLI) into the patient. Ten weeks after the lymphocyte infusions, no monoclonal band was evidenced and donor complete chimerism was detected. The patient did not develop GVHD. Once complete remission was achieved, the idiotype vaccine was administered to the patient. Nineteen months after DLI, the patient remains in remission. SN 0268-3369 YR 2000 FD 2000 LK http://riull.ull.es/xmlui/handle/915/34894 UL http://riull.ull.es/xmlui/handle/915/34894 LA en DS Repositorio institucional de la Universidad de La Laguna RD 14-ene-2025