hlaAllele — HL7 International OID Registry
Human leukocyte antigen (HLA) complex contains more than 220 genes that encode for the proteins of the immune system. HLA alleles are most commonly used for histocompatibility testing for stem cell and solid organ transplantation. The WHO Nomenclature Committee for Factors of the HLA System is responsible for a common nomenclature of HLA alleles, allele sequences, and quality control, to communicate histocompatibility typing information to match donors and recipients. For the full specification, please go to this website: http://hla.alleles.org/nomenclature/naming.html . HLA nomenclature can also be used to represent sets of alleles that share sequence identity in the Antigen Recognition Site (ARS). G-groups are alleles that have identical DNA sequences in the ARS, while P-groups are alleles that have identical protein sequences in the ARS. These are described, respectively, in http://hla.alleles.org/alleles/g_groups.html and http://hla.alleles.org/alleles/p_groups.html.