HLA Alleles Numbers
Assigned as of September 2023
The numbers below represent the number of named alleles for each gene. This number includes alleles that have been named but whose sequences are still confidential. This means that the number of sequences found in some files on this site may differ from the number of sequences indicated in this table. Details of the alleles that are still confidential can be seen in the latest version reports on the IPD-IMGT/HLA Database web site. The numbers below do not include the names of any deleted alleles - further details of deleted alleles can be found here. If you wish to cite these numbers in a publication, please see our citations page for further details.
| Numbers of HLA Alleles | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HLA Class I Alleles | 25,844 | |||||||||||||
| HLA Class II Alleles | 10,970 | |||||||||||||
| HLA Alleles | 36,814 | |||||||||||||
| Other non-HLA Alleles | 805 | |||||||||||||
| Number of Confidential Alleles | 3 | |||||||||||||
| HLA Class I | ||||||||||||||
| Gene | A | B | C | E | F | G | ||||||||
| Alleles | 8,012 | 9,573 | 7,995 | 350 | 91 | 157 | ||||||||
| Proteins | 4,688 | 5,694 | 4,410 | 140 | 17 | 48 | ||||||||
| Nulls | 414 | 338 | 353 | 10 | 2 | 6 | ||||||||
| HLA Class I - Pseudogenes | ||||||||||||||
| Gene | H | J | K | L | N | P | S | T | U | V | W | Y | ||
| Alleles | 72 | 33 | 6 | 5 | 5 | 5 | 7 | 8 | 5 | 3 | 11 | 3 | ||
| Proteins | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Nulls | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| HLA Class II | ||||||||||||||
| Gene | DRA | DRB | DQA1 | DQA2 | DQB1 | DQB2 | DPA1 | DPA2 | DPB1 | DPB2 | DMA | DMB | DOA | DOB |
| Alleles | 65 | 4,530 | 688 | 42 | 2,491 | 41 | 619 | 5 | 2,393 | 6 | 58 | 82 | 92 | 63 |
| Proteins | 14 | 2,983 | 337 | 11 | 1,516 | 9 | 297 | 0 | 1,399 | 0 | 9 | 9 | 14 | 16 |
| Nulls | 0 | 198 | 21 | 0 | 111 | 1 | 26 | 0 | 127 | 0 | 0 | 0 | 1 | 0 |
| HLA Class II - DRB Alleles | ||||||||||||||
| Gene | DRB1 | DRB2 | DRB3 | DRB4 | DRB5 | DRB6 | DRB7 | DRB8 | DRB9 | |||||
| Alleles | 3,588 | 1 | 482 | 248 | 199 | 3 | 2 | 1 | 6 | |||||
| Proteins | 2,315 | 0 | 363 | 157 | 148 | 0 | 0 | 0 | 0 | |||||
| Nulls | 122 | 0 | 24 | 27 | 25 | 0 | 0 | 0 | 0 | |||||
| Other non-HLA Genes | ||||||||||||||
| Gene | HFE | MICA | MICB | TAP1 | TAP2 | |||||||||
| Alleles | 6 | 531 | 245 | 12 | 106 | |||||||||
| Proteins | 4 | 280 | 47 | 6 | 13 | |||||||||
| Nulls | 0 | 8 | 25 | 1 | 0 | |||||||||
