RT Journal Article T1 Umbilical cord blood transplantation from unrelated donors in patients with Philadelphia chromosome-positive acute lymphoblastic leukemia. A1 Piñana, José Luis A1 Sanz, Jaime A1 Picardi, Alessandra A1 Ferrá, Christelle A1 Martino, Rodrigo A1 Barba, Pere A1 Gonzalez-Vicent, Marta A1 Pascual, María Jesús A1 Martín, Carmen A1 Verdeguer, Amparo A1 Diaz de Heredia, Cristina A1 Montesinos, Pau A1 Ribera, José-María A1 Sanz, Miguel A1 Arcese, William A1 Sanz, Guillermo K1 Aloinjertos K1 Enfermedad crónica K1 Trasplante de células madre de la sangre del cordón K1 Supervivencia sin Enfermedad K1 Estudios de Seguimiento K1 Enfermedad injerto contra huésped K1 Agonistas mieloablativos K1 Cromosoma Filadelfia K1 Leucemia-linfoma linfoblástico de células precursoras K1 Estudios retrospectivos K1 Tasa de Supervivencia K1 Acondicionamiento para el trasplante AB There are very few disease-specific studies focusing on outcomes of umbilical cord blood transplantation for Philadelphia chromosome-positive acute lymphoblastic leukemia. We report the outcome of 45 patients with Philadelphia chromosome-positive acute lymphoblastic leukemia who underwent myeloablative single unit cord blood transplantation from unrelated donors within the GETH/GITMO cooperative group. Conditioning regimens were based on combinations of thiotepa, busulfan, cyclophospamide or fludarabine, and antithymocyte globulin. At the time of transplantation, 35 patients (78%) were in first complete remission, four (8%) in second complete remission and six (14%) in third or subsequent response. The cumulative incidence of myeloid engraftment was 96% at a median time of 20 days and significantly better for patients receiving higher doses of CD34(+) cells. The incidence of acute grade II-IV graft-versus-host disease was 31%, while that of overall chronic graft-versus-host disease was 53%. Treatment-related mortality was 17% at day +100 and 31% at 5 years. The 5-year relapse, event-free survival and overall survival rates were 31%, 36% and 44%, respectively. Although the event-free and overall survival rates in patients without BCR/ABL transcripts detectable at time of transplant were better than those in whom BCR/ABL transcripts were detected (46% versus 24% and 60% versus 30%, respectively) these differences were not statistically significant in the univariate analysis (P=0.07). These results demonstrate that umbilical cord blood transplantation from unrelated donors can be a curative treatment for a substantial number of patients with Philadelphia chromosome-positive acute lymphoblastic leukemia. PB Ferrata Storti Foundation SN 0390-6078 YR 2014 FD 2014-02 LK http://hdl.handle.net/10668/1838 UL http://hdl.handle.net/10668/1838 LA en NO Piñana JL, Sanz J, Picardi A, Ferrá C, Martino R, Barba P, et al. Umbilical cord blood transplantation from unrelated donors in patients with Philadelphia chromosome-positive acute lymphoblastic leukemia. Haematologica. 2014; 99(2):378-84 NO Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 8, 2025