Paucity of HLA-identical unrelated donors for African-Americans with hematologic malignancies: the need for new donor options

Biol Blood Marrow Transplant. 2008 Aug;14(8):938-41. doi: 10.1016/j.bbmt.2008.06.005.

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.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Black or African American*
  • Child
  • Child, Preschool
  • HLA Antigens
  • Hematologic Neoplasms / therapy*
  • Hematopoietic Stem Cell Transplantation
  • Histocompatibility / immunology*
  • Humans
  • Infant
  • Middle Aged
  • Registries
  • Tissue Donors / statistics & numerical data
  • Tissue Donors / supply & distribution*

Substances

  • HLA Antigens