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Relapse risk after umbilical cord blood transplantation: enhanced graft-versus-leukemia effect in recipients of 2 units. Blood 2009 Nov 05;114(19):4293-9



Pubmed ID


Pubmed Central ID




Scopus ID

2-s2.0-77950404594   218 Citations


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 as NCT00309842.

Author List

Verneris MR, Brunstein CG, Barker J, MacMillan ML, DeFor T, McKenna DH, Burke MJ, Blazar BR, Miller JS, McGlave PB, Weisdorf DJ, Wagner JE


Michael James Burke MD Professor in the Pediatrics department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Child, Preschool
Cord Blood Stem Cell Transplantation
Disease-Free Survival
Graft vs Host Disease
Graft vs Leukemia Effect
Histocompatibility Testing
Leukemia, Myeloid, Acute
Middle Aged
Precursor Cell Lymphoblastic Leukemia-Lymphoma
Risk Factors
Survival Analysis
Young Adult
jenkins-FCD Prod-482 91ad8a360b6da540234915ea01ff80e38bfdb40a