Double unit grafts successfully extend the application of umbilical cord blood transplantation in adults with acute leukemia

Andromachi Scaradavou, Claudio G. Brunstein, Mary Eapen, Jennifer Le-Rademacher, Juliet N. Barker, Nelson Chao, Corey Cutler, Colleen Delaney, Fangyu Kan, Luis Isola, Chatchada Karanes, Mary J. Laughlin, John E. Wagner, Elizabeth J. Shpall

Research output: Contribution to journalArticle

130 Scopus citations

Abstract

Cell dose is a major limitation for umbilical cord blood (UCB) transplantation because units containing a minimum of 2.5 × 107 total nucleated cells (TNC)/kilogram patient body weight are frequently not available. The transplantation of 2 partially HLA-matched UCB units has been adopted as a simple approach for increasing the TNC. We sought to determine whether the relative safety and efficacy of this approach was comparable with a single UCB transplantation. Included are adults with acute leukemia who received transplants with 1 (n = 106) or 2 (n = 303) UCB units. All UCB units for single UCB transplantations contained TNC ≥ 2.5 × 107/kg. For double UCB transplantations, the total TNC for units 1 and 2 were > 2.5 × 107/kg but in approximately half of these transplantations, 1 of the 2 units contained < 2.5 × 107 TNC/kg. Adjusting for factors associated with outcomes, risks of neutrophil recovery (odds ratio 0.83, P = .59), transplantation-related mortality (hazard ratio [HR] 0.91, P = .63), relapse (HR 0.90, P = .64), and overall mortality (HR 0.93, P = .62) was similar after double UCB and adequate dose single UCB transplantations. These data support double UCB unit transplantation for acute leukemia when an adequately dosed single UCB unit is not available thereby extending access to nearly all patients.

Original languageEnglish (US)
Pages (from-to)752-758
Number of pages7
JournalBlood
Volume121
Issue number5
DOIs
StatePublished - Jan 31 2013

Keywords

  • Efficacy of transplanting adequately dosed 1- or 2-cord blood units

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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    Scaradavou, A., Brunstein, C. G., Eapen, M., Le-Rademacher, J., Barker, J. N., Chao, N., Cutler, C., Delaney, C., Kan, F., Isola, L., Karanes, C., Laughlin, M. J., Wagner, J. E., & Shpall, E. J. (2013). Double unit grafts successfully extend the application of umbilical cord blood transplantation in adults with acute leukemia. Blood, 121(5), 752-758. https://doi.org/10.1182/blood-2012-08-449108