Abstract
Identification of an HLA identical donor/recipient pair using high-resolution techniques at HLA A, B, C, and DRB1 optimizes survival after adult unrelated hematopoietic stem cell transplant. It has been estimated that roughly 50% of African-Americans have suitable unrelated donors based on serologic typing, but there is little information on the likelihood of identifying an HLA-identical unrelated donor using molecular techniques. From February 2002 to May 2007, we performed 51 unrelated donor searches for African-American patients using the National Marrow Donor Program ® and found HLA identical unrelated donors for only 3. By contrast, 50 (98%) had at least 1, and often multiple, appropriately matched cord blood units available. Very few African-American recipients have HLA-identical unrelated donors. To allow more African-American patients to proceed to transplant, innovative donor strategies, including adult cord blood transplantation, haploidentical transplant, or the identification of permissive mismatches should be investigated.
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