Table 2. Definitions of the Numbers Describing HLA Antigens and Alleles Matching

If These HLA Antigens and Alleles Match: Then the Donor Is Considered to be This Type of Match:
A, B, and DRB1 6/6
A, B, C, and DRB1 8/8
A, B, C, DRB1, and DQB1 10/10
A, B, C, DRB1, DQB1, and DPB1 12/12

From: Pediatric Allogeneic Hematopoietic Stem Cell Transplantation (PDQ®)

Cover of PDQ Cancer Information Summaries
PDQ Cancer Information Summaries [Internet].
Bethesda (MD): National Cancer Institute (US); 2002-.
Copyright Notice

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.