PMID- 19706886 OWN - NLM STAT- MEDLINE DCOM- 20091203 LR - 20211020 IS - 1528-0020 (Electronic) IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 114 IP - 19 DP - 2009 Nov 5 TI - Relapse risk after umbilical cord blood transplantation: enhanced graft-versus-leukemia effect in recipients of 2 units. PG - 4293-9 LID - 10.1182/blood-2009-05-220525 [doi] AB - Umbilical cord blood (UCB) transplantation is potentially curative for acute leukemia. This analysis was performed to identify risk factors associated with leukemia relapse following myeloablative UCB transplantation. Acute leukemia patients (n = 177; 88 with acute lymphoblastic leukemia and 89 with acute myeloid leukemia) were treated at a single center. Patients received a UCB graft composed of either 1 (47%) or 2 (53%) partially human leukocyte antigen (HLA)-matched unit(s). Conditioning was with cyclophosphamide and total body irradiation with or without fludarabine. The incidence of relapse was 26% (95% confidence interval [CI], 19%-33%). In multivariate analysis, relapse was higher in advanced disease patients (> or = third complete remission [CR3]; relative risk [RR], 3.6; P < .01), with a trend toward less relapse in recipients of 2 UCB units (RR = 0.6; P = .07). However, relapse was lower for CR1-2 patients who received 2 UCB units (RR 0.5; P < .03). Leukemia-free survival was 40% (95% CI, 30%-51%) and 51% (95% CI, 41%-62%) for single- and double-unit recipients, respectively (P = .35). Although it is known that transplantation in CR1 and CR2 is associated with less relapse risk, this analysis reveals an enhanced graft-versus-leukemia effect in acute leukemia patients after transplantation with 2 partially HLA-matched UCB units. This trial was registered at http://clinicaltrials.gov as NCT00309842. FAU - Verneris, Michael R AU - Verneris MR AD - Department of Pediatrics, University of Minnesota Medical School, Minneapolis, MN 55455, USA. verneris@umn.edu FAU - Brunstein, Claudio G AU - Brunstein CG FAU - Barker, Juliet AU - Barker J FAU - MacMillan, Margaret L AU - MacMillan ML FAU - DeFor, Todd AU - DeFor T FAU - McKenna, David H AU - McKenna DH FAU - Burke, Michael J AU - Burke MJ FAU - Blazar, Bruce R AU - Blazar BR FAU - Miller, Jeffrey S AU - Miller JS FAU - McGlave, Philip B AU - McGlave PB FAU - Weisdorf, Daniel J AU - Weisdorf DJ FAU - Wagner, John E AU - Wagner JE LA - eng SI - ClinicalTrials.gov/NCT00309842 GR - P01 CA065493/CA/NCI NIH HHS/United States GR - P01-CA65493/CA/NCI NIH HHS/United States PT - Clinical Trial PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090825 PL - United States TA - Blood JT - Blood JID - 7603509 SB - IM CIN - Blood. 2009 Nov 5;114(19):3980-1. PMID: 19892726 MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Cord Blood Stem Cell Transplantation/adverse effects/*methods MH - Disease-Free Survival MH - Female MH - Graft vs Host Disease/etiology MH - Graft vs Leukemia Effect/*immunology MH - Histocompatibility Testing MH - Humans MH - Infant MH - Leukemia, Myeloid, Acute/immunology/therapy MH - Male MH - Middle Aged MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/immunology/therapy MH - Recurrence MH - Risk Factors MH - Survival Analysis MH - Young Adult PMC - PMC2774557 EDAT- 2009/08/27 09:00 MHDA- 2009/12/16 06:00 PMCR- 2010/11/05 CRDT- 2009/08/27 09:00 PHST- 2009/08/27 09:00 [entrez] PHST- 2009/08/27 09:00 [pubmed] PHST- 2009/12/16 06:00 [medline] PHST- 2010/11/05 00:00 [pmc-release] AID - S0006-4971(20)38995-3 [pii] AID - 2009/220525 [pii] AID - 10.1182/blood-2009-05-220525 [doi] PST - ppublish SO - Blood. 2009 Nov 5;114(19):4293-9. doi: 10.1182/blood-2009-05-220525. Epub 2009 Aug 25.