Welcome to HLA.alleles.org

A comprehensive online resource offering information on HLA and HLA-related genes

Notice: Server maintenance scheduled between 19 January 2026 06:30 GMT and 20 January 2026 13:30 GMT. We apologise for any inconvenience caused.

Nomenclature Favicon
Naming Alleles

Describing how an allele is named using the HLA Nomenclature.
Antigen Favicon
Antigens

Tables listing all of the officially recognised HLA antigens, together with any previous official designations.

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Genes Favicon
Genes List

Information for all known HLA and HLA related genes.

G-group Favicon
groups

HLA alleles that have identical nucleotide sequences across the exons encoding the peptide binding domains.

P-group Favicon
groups

HLA alleles having nucleotide sequences that encode the same protein sequence for the peptide binding domains.

Last updated: 14-Jan-2026