Table showing the number of alleles, proteins and nulls in the IPD-IMGT/HLA Database named as of September 2025.
| Numbers of HLA Alleles | |
|---|---|
| HLA class I alleles | 29475 |
| HLA class II alleles | 13521 |
| HLA alleles | 42996 |
| Other non-HLA alleles | 1032 |
| Number of confidential alleles | 0 |
| HLA class I | ||||||
|---|---|---|---|---|---|---|
| Gene | A | B | C | E | F | G |
| Alleles | 8949 | 10680 | 8944 | 385 | 126 | 194 |
| Proteins | 5229 | 6358 | 4934 | 144 | 28 | 61 |
| Nulls | 476 | 386 | 412 | 10 | 3 | 6 |
| HLA class I - Pseudogenes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gene | H | J | K | L | N | P | R | S | T | U | V | W | Y | |
| Alleles | 96 | 33 | 7 | 6 | 5 | 5 | 2 | 7 | 9 | 7 | 4 | 13 | 3 | |
| Proteins | 0 | 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 | 0 | |
| HLA class II | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gene | DRA | DRB | DQA1 | DQA2 | DQB1 | DQB2 | DPA1 | DPA2 | DPB1 | DPB2 | DMA | DMB | DOA | DOB |
| Alleles | 127 | 5137 | 966 | 42 | 2924 | 41 | 877 | 6 | 2911 | 7 | 89 | 138 | 147 | 109 |
| Proteins | 19 | 3328 | 472 | 11 | 1736 | 9 | 397 | 0 | 1670 | 0 | 10 | 9 | 17 | 20 |
| Nulls | 0 | 236 | 24 | 0 | 126 | 1 | 35 | 0 | 151 | 0 | 0 | 0 | 1 | 1 |
| HLA class II - DRB Alleles | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gene | DRB1 | DRB2 | DRB3 | DRB4 | DRB5 | DRB6 | DRB7 | DRB8 | DRB9 |
| Alleles | 3892 | 1 | 645 | 335 | 251 | 4 | 2 | 1 | 6 |
| Proteins | 2523 | 0 | 441 | 192 | 172 | 0 | 0 | 0 | 0 |
| Nulls | 140 | 0 | 32 | 35 | 29 | 0 | 0 | 0 | 0 |
| Other non-HLA Genes | ||||||
|---|---|---|---|---|---|---|
| Gene | HFE | MICA | MICB | TAP1 | TAP2 | |
| Alleles | 6 | 589 | 312 | 19 | 106 | |
| Proteins | 4 | 279 | 53 | 11 | 13 | |
| Nulls | 0 | 9 | 25 | 1 | 0 | |
Last updated: 08-Oct-2025