Research Explores the Effects of Stem Cell Source and Patient Age on Stem Cell Transplantatio...(of three types of stem cell sources: bon...),Health

Date:12/7/2008

of three types of stem cell sources: bone marrow, peripheral blood, and cord blood. Study results were based on an analysis of the outcomes of 1,240 adults with acute leukemia (707 patients with acute myeloid leukemia and 533 patients with acute lymphocytic leukemia) from 2002 to 2006. Of those patients who received a bone marrow stem cell transplant, 243 were matched at eight out of eight possible HLA loci and 111 were matched at seven HLA loci. In those receiving a peripheral blood stem cell transplant, 518 were matched at eight HLA loci and 210 at seven HLA loci. In those receiving cord blood transplants, 28 were matched at five or six HLA loci and 110 matched at four HLA loci.

The study found that there were fewer transplant-related deaths for matched peripheral blood and bone marrow transplants (27 percent and 26 percent, respectively) than as for mismatched peripheral blood, bone marrow, and cord blood transplants (42 percent, 37 percent, and 41 percent, respectively). Leukemia-free survival (LFS) and overall survival (OS) were highest after transplantation of matched peripheral blood (LFS: 43 percent; OS: 45 percent) and bone marrow (LFS: 46 percent; OS: 48 percent). These rates were lower after transplantation of mismatched peripheral blood (LFS: 33 percent; OS: 36 percent), bone marrow (LFS: 34 percent; OS: 38 percent), and cord blood (LFS: 33 percent; OS: 35 percent). Importantly, rates of transplant-related deaths, leukemia-free survival, and overall survival for the three types of mismatched transplants were similar even though cord blood transplants were mismatched at more HLA loci.

Notch-Mediated Expansion of Human Cord Blood Progenitor Cells Results in Rapid Myeloid Reconstitutionin VivoFollowing Myeloablative Cord Blood Transplantation

[Abstract #212]

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SOURCE American Society of Hematology Copyright©2008 PR Newswire. All rights reserved

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